List of area code overlays
Encyclopedia
An area code overlay is a North American area code which is located in the same geographic location as at least one other area code. They are determined and regulated as part of the North American Numbering Plan
to increase the number of available phone numbers in a province
, state
or region.
s of current and proposed area codes and overlays in the United States.
North American Numbering Plan
The North American Numbering Plan is an integrated telephone numbering plan administered by Neustar which encompasses 24 countries and territories, including the United States and its territories, Canada, Bermuda, and 16 nations of the Caribbean...
to increase the number of available phone numbers in a province
Province
A province is a territorial unit, almost always an administrative division, within a country or state.-Etymology:The English word "province" is attested since about 1330 and derives from the 13th-century Old French "province," which itself comes from the Latin word "provincia," which referred to...
, state
U.S. state
A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...
or region.
List of area code overlays
The North American Numbering Plan Administration maintains the definitive list of overlay planOverlay plan
In telephony, especially in North America, an overlay plan is the practice of introducing a new area code by applying it onto a geographic area that is already occupied by one or more existing area codes, resulting in two area codes serving the same area.- Methodology :Prior to the introduction of...
s of current and proposed area codes and overlays in the United States.
Current
- 224 overlays 847 in the northern suburbs of ChicagoChicagoChicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...
, IllinoisIllinoisIllinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,... - 226 overlays 519 in Southwestern OntarioSouthwestern OntarioSouthwestern Ontario is a subregion of Southern Ontario in the Canadian province of Ontario, centred on the city of London. It extends north to south from the Bruce Peninsula on Lake Huron to the Lake Erie shoreline, and east to south-west roughly from Guelph to Windsor. The region had a population...
. - 234 overlays 330 in the Akron-Canton and Warren-Youngstown areas in OhioOhioOhio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...
. - 240 overlays 301 in the Washington, D.C. suburbs and panhandle of Maryland.
- 267 overlays 215 in the greater Philadelphia area and its surrounding suburbs.
- 281 and 832 overlay 713 in Greater HoustonGreater HoustonHouston–Sugar Land–Baytown is a 10-county metropolitan area defined by the Office of Management and Budget. It is located along the Gulf Coast region in the U.S. state of Texas...
. Originally, 281 was a pure geographic split from 713, but when 832 was added as an overlay, 281 was converted to an overlay. - 289 overlays 905 in the Greater Toronto AreaGreater Toronto AreaThe Greater Toronto Area is the largest metropolitan area in Canada, with a 2006 census population of 5.5 million. The Greater Toronto Area is usually defined as the central city of Toronto, along with four regional municipalities surrounding it: Durham, Halton, Peel, and York...
, HamiltonHamilton, OntarioHamilton is a port city in the Canadian province of Ontario. Conceived by George Hamilton when he purchased the Durand farm shortly after the War of 1812, Hamilton has become the centre of a densely populated and industrialized region at the west end of Lake Ontario known as the Golden Horseshoe...
and the Niagara PeninsulaNiagara PeninsulaThe Niagara Peninsula is the portion of Southern Ontario, Canada lying between the south shore of Lake Ontario and the north shore of Lake Erie. It stretches from the Niagara River in the east to Hamilton, Ontario in the west. The population of the peninsula is roughly 1,000,000 people...
in OntarioOntarioOntario is a province of Canada, located in east-central Canada. It is Canada's most populous province and second largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa....
. - 321Area code 321Area code 321 is the area code serving Brevard County, Florida. The area code has been in use since November 1, 1999; it was assigned to the area, instead of suburban Chicago, after a successful petition led by local resident Robert Osband to commemorate the Space Coast's impact on the county. The...
is used in part as an overlay of 407Area code 407Area code 407 is the area code for the Orlando metro area including all of Orange, Osceola, and Seminole counties, as well as small portions of Volusia and Lake counties. From 1947 until 1988, the 407 area code was part of the 305 area code, which included the east coast from Brevard County...
in Orlando, FloridaOrlando, FloridaOrlando is a city in the central region of the U.S. state of Florida. It is the county seat of Orange County, and the center of the Greater Orlando metropolitan area. According to the 2010 US Census, the city had a population of 238,300, making Orlando the 79th largest city in the United States...
. - 331 overlays 630 in the western suburbs of ChicagoChicagoChicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...
. - 339 overlays (parts of) 781Area code 781Under the North American Numbering Plan for telephone area codes, area codes 781 and 339 cover most of suburban Boston, Massachusetts and most of The South Shore...
in MassachusettsMassachusettsThe Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...
. - 343 overlays 613Area code 613Area code 613 are area codes for Ottawa and surrounding Eastern Ontario, Canada. 613 is one of the 86 original area codes of North America assigned in October 1947...
in OttawaOttawaOttawa is the capital of Canada, the second largest city in the Province of Ontario, and the fourth largest city in the country. The city is located on the south bank of the Ottawa River in the eastern portion of Southern Ontario...
and surrounding Eastern OntarioEastern OntarioEastern Ontario is a subregion of Southern Ontario in the Canadian province of Ontario which lies in a wedge-shaped area between the Ottawa River and St. Lawrence River...
. - 347Area code 347Area code 347 is a New York City area code used as an overlay to 718 and 917. It is used in the boroughs of Brooklyn, Queens, the Bronx, and Staten Island, as well as the Marble Hill and Inwood sections of Manhattan. 347 is used for both landlines and mobile devices.The 347 area code became...
, in 718Area code 718Area code 718 is a New York City telephone area code in the boroughs of the Bronx, Queens, Brooklyn, and Staten Island, as well as the Marble Hill section of Manhattan....
areas for The BronxThe BronxThe Bronx is the northernmost of the five boroughs of New York City. It is also known as Bronx County, the last of the 62 counties of New York State to be incorporated...
and QueensQueensQueens is the easternmost of the five boroughs of New York City. The largest borough in area and the second-largest in population, it is coextensive with Queens County, an administrative division of New York state, in the United States....
boroughs of New York CityNew York CityNew York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...
, plus Marble HillMarble Hill, ManhattanMarble Hill is the neighborhood which makes up the northernmost part of the Borough of Manhattan in New York City, United States. Although it is politically part of Manhattan and New York County, because of the re-routing of the Harlem River, it is located on the North American mainland contiguous...
, a ManhattanManhattanManhattan is the oldest and the most densely populated of the five boroughs of New York City. Located primarily on the island of Manhattan at the mouth of the Hudson River, the boundaries of the borough are identical to those of New York County, an original county of the state of New York...
neighborhood physically attached to The Bronx.. - 351 overlays 978Area code 978Area codes 978 and 351 are Commonwealth of Massachusetts area codes serving the communities of Salem, Haverhill, Lawrence, Lowell, Peabody, Fitchburg and Leominster as well as northeastern Massachusetts. Area code 978 was created as a split from Worcester's 508 on September 1, 1997, it finished...
in MassachusettsMassachusettsThe Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...
. - 385 overlays 801 along the Wasatch FrontWasatch FrontThe Wasatch Front is a metropolitan region in the north-central part of the U.S. state of Utah. It consists of a chain of cities and towns stretched along the Wasatch Range from approximately Santaquin in the south to Brigham City in the north...
of UtahUtahUtah is a state in the Western United States. It was the 45th state to join the Union, on January 4, 1896. Approximately 80% of Utah's 2,763,885 people live along the Wasatch Front, centering on Salt Lake City. This leaves vast expanses of the state nearly uninhabited, making the population the...
, including Salt Lake City, ProvoProvo, UtahProvo is the third largest city in the U.S. state of Utah, located about south of Salt Lake City along the Wasatch Front. Provo is the county seat of Utah County and lies between the cities of Orem to the north and Springville to the south...
–OremOrem, UtahOrem is a city in Utah County, Utah, United States, in the north-central part of the state. It is adjacent to Provo, Lindon, and Vineyard and is about south of Salt Lake City. Orem is one of the principal cities of the Provo-Orem, Utah Metropolitan Statistical Area, which includes all of Utah and...
, and OgdenOgden, UtahOgden is a city in Weber County, Utah, United States. Ogden serves as the county seat of Weber County. The population was 82,825 according to the 2010 Census. The city served as a major railway hub through much of its history, and still handles a great deal of freight rail traffic which makes it a...
. - 424 overlays 310Area code 310North American telephone area codes 310 and 424 are the California telephone area codes which are roughly coterminous with the West Los Angeles and South Bay areas of Los Angeles County, including Santa Catalina Island . It also includes a small portion of Ventura County...
in the southwestern part of Los Angeles County, CaliforniaLos Angeles County, CaliforniaLos Angeles County is a county in the U.S. state of California. As of 2010 U.S. Census, the county had a population of 9,818,605, making it the most populous county in the United States. Los Angeles County alone is more populous than 42 individual U.S. states...
. - 430 overlays 903 in northeast TexasTexasTexas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...
. - 438 overlays 514 on the Island of MontrealIsland of MontrealThe Island of Montreal , in extreme southwestern Quebec, Canada, is located at the confluence of the Saint Lawrence and Ottawa Rivers. It is separated from Île Jésus by the Rivière des Prairies....
, QuebecQuebecQuebec or is a province in east-central Canada. It is the only Canadian province with a predominantly French-speaking population and the only one whose sole official language is French at the provincial level....
. - 442Area codes 442 and 760Image:Area_code_442.svg|right|Map of California area codes in blue with 442/760 in redrect 65 82 92 100 Area code 916rect 220 242 245 256 Area code 909rect 243 274 265 287 Area code 951rect 136 323 160 338 Area code 858...
overlays 760Area codes 442 and 760Image:Area_code_442.svg|right|Map of California area codes in blue with 442/760 in redrect 65 82 92 100 Area code 916rect 220 242 245 256 Area code 909rect 243 274 265 287 Area code 951rect 136 323 160 338 Area code 858...
in the southeastern part of CaliforniaCaliforniaCalifornia is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
. - 443 overlays 410 in BaltimoreBaltimoreBaltimore is the largest independent city in the United States and the largest city and cultural center of the US state of Maryland. The city is located in central Maryland along the tidal portion of the Patapsco River, an arm of the Chesapeake Bay. Baltimore is sometimes referred to as Baltimore...
, its suburbs, and the Eastern Shore of MarylandEastern Shore of MarylandThe Eastern Shore of Maryland is a territorial part of the U.S. state of Maryland that lies predominately on the east side of the Chesapeake Bay and consists of nine counties. The origin of term Eastern Shore was derived to distinguish a territorial part of the State of Maryland from the Western...
. - 469 and 972 overlay 214 in the eastern portion of the Dallas–Fort Worth MetroplexDallas–Fort Worth metroplexThe Dallas–Fort Worth–Arlington Metropolitan Statistical Area, a title designated by the U.S. Census as of 2003, encompasses 12 counties within the U.S. state of Texas. The area is divided into two metropolitan divisions: Dallas–Plano–Irving and Fort Worth–Arlington. Residents of the area...
(including the city of Dallas). As in the Houston situation discussed above, 972 was originally a geographic split from 214, but was converted to an overlay once 469 was implemented. - 484 overlays 610 in eastern and parts of southeastern PennsylvaniaPennsylvaniaThe Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...
. - 531 overlays 402 in eastern NebraskaNebraskaNebraska is a state on the Great Plains of the Midwestern United States. The state's capital is Lincoln and its largest city is Omaha, on the Missouri River....
. - 539 overlays 918 in northeastern OklahomaOklahomaOklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...
. - 551 overlays 201Area code 201201 is the North American telephone area code for the state of New Jersey covering most of Bergen County, as well as parts of Essex, Hudson and Passaic. It is overlaid with area code 551....
in northeastern New JerseyNew JerseyNew Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...
. - 567 overlays 419 in northwest OhioOhioOhio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...
, including Toledo and Lima. - 571 overlays 703 in Northern VirginiaNorthern VirginiaNorthern Virginia consists of several counties and independent cities in the Commonwealth of Virginia, in a widespread region generally radiating southerly and westward from Washington, D.C...
. - 587Area code 587Area code 587 is a telephone area code that covers all of Alberta, Canada, in addition to the incumbent codes, 403 and 780. Numbers in this area code started being allocated in late 2008....
overlays area code 403Area code 403Area code 403 is a telephone area code in the Canadian province of Alberta, encompassing the southern half of the province, including the Calgary area...
in southern Alberta and area code 780Area code 780Area code 780 is a telephone area code in the province of Alberta, encompassing the northern two-thirds of the province. The code was established in 1999; prior to this date the entire province was served by the 403 area code...
in northern AlbertaAlbertaAlberta is a province of Canada. It had an estimated population of 3.7 million in 2010 making it the most populous of Canada's three prairie provinces...
(Canada). - 636Area code 636Area code 636 serves east-central Missouri, excluding the city of St. Louis and most of St. Louis County. 636 includes parts of the community of Chesterfield, and all of Union, De Soto, Troy, St. Charles, Jefferson, and Warren counties. Area code 314, now assigned to St. Louis and some suburbs,...
overlays area code 314Area code 314The area code 314 serves the independent city of St. Louis, Missouri, and most suburbs located in neighboring St. Louis County.It is bordered by area code 618 across the Mississippi River in Illinois, and by area code 636 in Missouri, which acts as an envelope around the 314 area.-History:Area code...
in the western suburbs of St. Louis, MissouriSt. Louis, MissouriSt. Louis is an independent city on the eastern border of Missouri, United States. With a population of 319,294, it was the 58th-largest U.S. city at the 2010 U.S. Census. The Greater St...
. - 646Area code 646Area code 646 is a New York City telephone area code for the borough of Manhattan, created July 1, 1999, due to all the variations of 212 and 917 area codes having been activated....
, in the area code 212Area code 212Area code 212 is a New York City telephone area code for the borough of Manhattan. By area, it is one of the smallest area codes in North America....
areas for the ManhattanManhattanManhattan is the oldest and the most densely populated of the five boroughs of New York City. Located primarily on the island of Manhattan at the mouth of the Hudson River, the boundaries of the borough are identical to those of New York County, an original county of the state of New York...
borough of New York CityNew York CityNew York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...
(except for Marble Hill—see area code 347 above). - 647 overlays 416 in the City of TorontoTorontoToronto is the provincial capital of Ontario and the largest city in Canada. It is located in Southern Ontario on the northwestern shore of Lake Ontario. A relatively modern city, Toronto's history dates back to the late-18th century, when its land was first purchased by the British monarchy from...
, OntarioOntarioOntario is a province of Canada, located in east-central Canada. It is Canada's most populous province and second largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa....
. - 657 overlays 714Area code 714North American area codes 657 and 714 are Californian telephone area codes which encompass northern Orange County, a portion of Los Angeles County, and portions of Chino Hills in San Bernardino County...
in northern Orange CountyOrange County, CaliforniaOrange County is a county in the U.S. state of California. Its county seat is Santa Ana. As of the 2010 census, its population was 3,010,232, up from 2,846,293 at the 2000 census, making it the third most populous county in California, behind Los Angeles County and San Diego County...
, CaliforniaCaliforniaCalifornia is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
. - 678 overlays both 404Area code 404Area code 404 covers Atlanta and its immediate neighbors, roughly within Interstate 285.Originally, it covered all of Georgia when the area code system was first created in the 1940s and implemented in 1951. On July 1, 1954, area code 912 was assigned to southern and middle Georgia...
and 770Area code 770Area code 770 is a telephone area code in the North American Numbering Plan , assigned to Metro Atlanta, Georgia's suburbs and exurbs. It was split from 404 in December 1995, just three years after the 706 split...
in metro AtlantaMetro AtlantaThe Atlanta metropolitan area or metro Atlanta, officially designated by the US Census Bureau as the Atlanta-Sandy Springs-Marietta Metropolitan Statistical Area, is the most populous metro area in the U.S. state of Georgia and the ninth-largest metropolitan statistical area in the United States...
. - 681 overlays 304 in West VirginiaWest VirginiaWest Virginia is a state in the Appalachian and Southeastern regions of the United States, bordered by Virginia to the southeast, Kentucky to the southwest, Ohio to the northwest, Pennsylvania to the northeast and Maryland to the east...
. Implemented in 2009, this is the first example of an overlay covering a state that previously had only one area code. - 682 overlays 817 in the western part of the Dallas-Fort Worth Metroplex, including the city of Fort WorthFort Worth, TexasFort Worth is the 16th-largest city in the United States of America and the fifth-largest city in the state of Texas. Located in North Central Texas, just southeast of the Texas Panhandle, the city is a cultural gateway into the American West and covers nearly in Tarrant, Parker, Denton, and...
. - 720 overlays 303Area code 303Image:Area_codes_CO.svg|right|Map of Colorado area codes in blue poly 67 8 381 26 380 108 356 107 352 131 343 130 340 107 326 102 320 104 301 104 301 85 282 85 287 77 263 77 259 84 216 79 204 102 182 125 177 144 191 151 199 177 180 203 168 207 166 219 151 219 149 229 167 226 168 238 186 238 196...
in the Denver area. - 747Area code 747Area code 747 and area code 818 are California telephone area codes consisting largely of the San Fernando Valley of Los Angeles, California. They cover roughly two million people.-History:...
overlays 818 in the Los AngelesLos ÁngelesLos Ángeles is the capital of the province of Biobío, in the commune of the same name, in Region VIII , in the center-south of Chile. It is located between the Laja and Biobío rivers. The population is 123,445 inhabitants...
area. - 754Area code 754Area codes 754 and 954 are the area codes for Broward County, Florida, U.S.The 954 code went into service on September 11, 1995, for all telephones within Broward County, Florida, in the Miami metropolitan area...
overlays 954 in Broward County, FloridaBroward County, Florida-2000 Census:As of the census of 2000, there were 1,623,018 people, 654,445 households, and 411,645 families residing in the county. The population density was 1,346 people per square mile . There were 741,043 housing units at an average density of 615 per square mile...
, including Fort LauderdaleFort Lauderdale, FloridaFort Lauderdale is a city in the U.S. state of Florida, on the Atlantic coast. It is the county seat of Broward County. As of the 2010 census, the city had a population of 165,521. It is a principal city of the South Florida metropolitan area, which was home to 5,564,635 people at the 2010...
. - 769 overlays 601Area code 601Area codes 601 and 769 are the telephone area codes for central Mississippi. Originally, area code 601 covered the entire state. In 1997, area code 228 was created for the Mississippi Gulf Coast area. In 1999, area code 662 was created in the northern half of Mississippi. In 2005, Mississippi's...
in central MississippiMississippiMississippi is a U.S. state located in the Southern United States. Jackson is the state capital and largest city. The name of the state derives from the Mississippi River, which flows along its western boundary, whose name comes from the Ojibwe word misi-ziibi...
. - 774 overlays (parts of) 508Area code 508Area codes 508 and 774 are NANPA area codes in the Commonwealth of Massachusetts. 508 was split from 617 on July 16, 1988 and finished January 1, 1989. Prior to the creation of 508, all of eastern & central Massachusetts used the 617 area code...
in MassachusettsMassachusettsThe Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...
. - 778Area code 778Area code 778 is an overlay area code for the Canadian province of British Columbia. It was created on November 3, 2001 as a concentrated overlay of area code 604...
overlays 604 and 250Area code 250Area code 250 is an area code for most of the Canadian province of British Columbia, including Vancouver Island. It was created on October 19, 1996 as a split of area code 604.The area code also serves the United States city of Hyder, Alaska....
in British ColumbiaBritish ColumbiaBritish Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858... - 779 overlays 815Area codes 815 and 779Area code 815 is a telephone area code for most of the northern third of the state of Illinois, less the core of the Chicago metropolitan area and the area around Moline. It was one of the four original Illinois area codes set up in 1947. A new overlay area code, 779, was implemented on March 17,...
in Northern and North Central Illinois. Some of the larger cities affected are Rockford, Freeport, and Kankakee. - 786 overlays 305 in Miami-Dade CountyMiami-Dade County, FloridaMiami-Dade County is a county located in the southeastern part of the state of Florida. As of 2010 U.S. Census, the county had a population of 2,496,435, making it the most populous county in Florida and the eighth-most populous county in the United States...
, FloridaFloridaFlorida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...
and the Florida KeysFlorida KeysThe Florida Keys are a coral archipelago in southeast United States. They begin at the southeastern tip of the Florida peninsula, about south of Miami, and extend in a gentle arc south-southwest and then westward to Key West, the westernmost of the inhabited islands, and on to the uninhabited Dry...
. 786 was originally implemented in 1998 as a concentrated overlay of 305 in Miami-Dade County only, and did not include the 305-only Florida Keys. The Keys were added to the overlay in 2008. - 848 overlays 732Area code 732Area code 732 was created on June 1, 1997, as the result of a split in New Jersey area code 908, and became mandatory on December 6 of that year. The area code mostly covers the Jersey Shore region of New Jersey, with a small area of North Jersey covered...
in central New Jersey. - 849 overlays both 809 and 829 in the Dominican RepublicDominican RepublicThe Dominican Republic is a nation on the island of La Hispaniola, part of the Greater Antilles archipelago in the Caribbean region. The western third of the island is occupied by the nation of Haiti, making Hispaniola one of two Caribbean islands that are shared by two countries...
. - 857 overlays (parts of) 617Area code 617Area code 617 covers the city of Boston, Massachusetts and some of its inner suburbs. Until July 16 1988, 617 had covered all of eastern and central Massachusetts. Area codes 508 and 781 were split off from 617. 617 was one of the original area codes from October, 1947...
in MassachusettsMassachusettsThe Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...
including BostonBostonBoston is the capital of and largest city in Massachusetts, and is one of the oldest cities in the United States. The largest city in New England, Boston is regarded as the unofficial "Capital of New England" for its economic and cultural impact on the entire New England region. The city proper had...
and CambridgeCambridge, MassachusettsCambridge is a city in Middlesex County, Massachusetts, United States, in the Greater Boston area. It was named in honor of the University of Cambridge in England, an important center of the Puritan theology embraced by the town's founders. Cambridge is home to two of the world's most prominent...
. - 862 overlays 973Area code 973Area code 973 is a North American Numbering Plan area code for Northern New Jersey that covers portions of Bergen, Essex, Hudson, Morris, Passaic, Sussex and Union Counties. It was formed as of June 1, 1997 when Area code 201 was split. In 2001, the 862 area code was created to overlay the 973...
in northern New Jersey. - 872Area code 872Template:Cite webArea code 872 is a North American Numbering Plan overlay of area codes 312 and 773 in Chicago, Illinois, and entered service on November 7, 2009.-External links:* at North American Numbering Plan Administration's website*...
overlays 312Area code 312Area code 312 is the telephone area code for the Chicago Loop and surrounding areas of the city of Chicago, Illinois. Prior to the split on November 11, 1989, forming 708 , 312 area code originally served much of Greater Chicago...
and 773Area code 773Area code 773 went into effect in the city of Chicago, Illinois, on 12 October 1996. The area code covers the city, excluding the downtown core. Originally, the entire city and suburbs were in area code 312. Then, in 1989, area code 708 was created for the suburbs, leaving a rump 312...
in ChicagoChicagoChicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...
. - 878Area code 878878 is an overlay area code for area codes 412 and 724 in Southwestern Pennsylvania centered in Pittsburgh. It came into effect on August 17, 2001, making 10-digit dialing mandatory in the 412 and 724 areas of Western Pennsylvania....
overlays 412Area code 412Area code 412 is a Commonwealth of Pennsylvania telephone area code which serves most of Allegheny County, Pennsylvania , along with small portions of Washington and Westmoreland counties, except the northern edge of Allegheny County served by the Consolidated Communications, formerly the North...
and 724Area code 724Area code 724 is a Commonwealth of Pennsylvania telephone area code in western and southwestern Pennsylvania, including the outer suburbs of Pittsburgh. It was split from Area code 412 on February 1, 1998...
in metro Pittsburgh. - 917Area code 917Area code 917 is a New York City telephone area code for all of the five boroughs . It was the first cellular/pager/voicemail area code for the city and is an overlay to 212, 718, 646, and 347...
, mostly for cellular phones, pagerPagerA pager is a simple personal telecommunications device for short messages. A one-way numeric pager can only receive a message consisting of a few digits, typically a phone number that the user is then requested to call...
s, and voicemailVoicemailVoicemail is a computer based system that allows users and subscribers to exchange personal voice messages; to select and deliver voice information; and to process transactions relating to individuals, organizations, products and services, using an ordinary telephone...
in both 212Area code 212Area code 212 is a New York City telephone area code for the borough of Manhattan. By area, it is one of the smallest area codes in North America....
/646Area code 646Area code 646 is a New York City telephone area code for the borough of Manhattan, created July 1, 1999, due to all the variations of 212 and 917 area codes having been activated....
and 718/347 areas. - 938 overlays 256Area code 256Area codes 256 and 938 are telephone numbering plan codes in the state of Alabama with 256 created on March 23, 1998, as a split from area code 205...
in northern AlabamaAlabamaAlabama is a state located in the southeastern region of the United States. It is bordered by Tennessee to the north, Georgia to the east, Florida and the Gulf of Mexico to the south, and Mississippi to the west. Alabama ranks 30th in total land area and ranks second in the size of its inland...
. - 939 overlays 787 in Puerto RicoPuerto RicoPuerto Rico , officially the Commonwealth of Puerto Rico , is an unincorporated territory of the United States, located in the northeastern Caribbean, east of the Dominican Republic and west of both the United States Virgin Islands and the British Virgin Islands.Puerto Rico comprises an...
. - 947 overlays 248Area code 248Area codes 248 and 947 are the area codes for Oakland County, which borders the city of Detroit to the north. However, the area also encompasses Northville and part of Northville Township in northwestern Wayne County, as well as parts of Brighton in eastern Livingston County. Area 248 was split...
in Oakland County, MichiganOakland County, Michigan-Demographics:As of the 2010 Census, there were 1,202,362 people, 471,115 households, and 315,175 families residing in the county. The population density as of the 2000 census was 1,369 people per square mile . There were 492,006 housing units at an average density of 564 per square mile...
. - 971 is an overlay of area code 503 in northwestern OregonOregonOregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...
, including the PortlandPortland, OregonPortland is a city located in the Pacific Northwest, near the confluence of the Willamette and Columbia rivers in the U.S. state of Oregon. As of the 2010 Census, it had a population of 583,776, making it the 29th most populous city in the United States...
and SalemSalem, OregonSalem is the capital of the U.S. state of Oregon, and the county seat of Marion County. It is located in the center of the Willamette Valley alongside the Willamette River, which runs north through the city. The river forms the boundary between Marion and Polk counties, and the city neighborhood...
areas. On April 27, 2008, the coastal area of ClatsopClatsop County, OregonClatsop County is a county located in the U.S. state of Oregon. The county is named for the Clatsop tribe of Native Americans, who lived along the coast of the Pacific Ocean prior to European settlement. As of 2010, the population was 37,039. The county seat is Astoria.-Economy:The principal...
and Tillamook ccountiesTillamook County, OregonTillamook County is a county located in the U.S. state of Oregon. The county is named for the Tillamook, a Native American tribe who were living in the area in the early 19th century at the time of European American settlement. In 2010, the county's population was 25,250...
, which had previously been exempted from the overlay and used only 503, were added to the overlay. - 980 overlays 704Area code 704Area code 704 covers Metropolitan Charlotte, in the Piedmont region of North Carolina, and also the cities of Gastonia, and Concord. Area code 980, created as an overlay in 2001, also covers the same area. The South Carolina side of the Charlotte metropolitan area is part of area code 803.704 is...
in the CharlotteCharlotte, North CarolinaCharlotte is the largest city in the U.S. state of North Carolina and the seat of Mecklenburg County. In 2010, Charlotte's population according to the US Census Bureau was 731,424, making it the 17th largest city in the United States based on population. The Charlotte metropolitan area had a 2009...
metropolitan region.
Proposed
- 236 proposed as a future overlay in British Columbia after 778Area code 778Area code 778 is an overlay area code for the Canadian province of British Columbia. It was created on November 3, 2001 as a concentrated overlay of area code 604...
is exhausted. - 272 is a planned overlay for 570Area code 570Area code 570 is a Commonwealth of Pennsylvania telephone area code which serves the northeast corner of the state including the cities of Williamsport, Wilkes-Barre, Scranton, and Sayre. Area code 570 was split from area code 717 on December 5, 1998....
in the Wilkes-Barre/Scranton, Pennsylvania area in June, 2011.UPDATE: This was recently postponed one year until 2012 - Area code 447 is planned for overlay of 217Area code 217217 is the North American telephone area code for much of Central Illinois, including the capital city of Springfield as well as the cities of Champaign, Urbana, Decatur, Danville, Quincy, and Rantoul.-Communities included:...
, with no precise time frame for integration. - Area code 464 is also reserved for 708Area code 708Area code 708 covers western and southern Cook County and eastern and southern Will County in Illinois. Area code 708 was split off from area code 312 on November 11th 1989, and once covered all of the suburbs of Chicago. In 1996, area code 847 and area code 630 were broken off from 708...
, to be integrated once the original area code is exhausted. - 470 will supplement the 678Area code 678678 is a North American Numbering Plan area code assigned to metropolitan Atlanta, Georgia, its suburbs and exurbs. The area code was first assigned to customers signing up for new telephone service on January 15, 1998. In local shorthand, 678 is usually written in shorthand for informal...
overlay already present for 404Area code 404Area code 404 covers Atlanta and its immediate neighbors, roughly within Interstate 285.Originally, it covered all of Georgia when the area code system was first created in the 1940s and implemented in 1951. On July 1, 1954, area code 912 was assigned to southern and middle Georgia...
and 770Area code 770Area code 770 is a telephone area code in the North American Numbering Plan , assigned to Metro Atlanta, Georgia's suburbs and exurbs. It was split from 404 in December 1995, just three years after the 706 split...
in Metro AtlantaMetro AtlantaThe Atlanta metropolitan area or metro Atlanta, officially designated by the US Census Bureau as the Atlanta-Sandy Springs-Marietta Metropolitan Statistical Area, is the most populous metro area in the U.S. state of Georgia and the ninth-largest metropolitan statistical area in the United States...
. The new area code has existed since 2001-09-02, but will not be used until all assignable 678 NXX codes are exhausted.. - 475 planned to overlay ConnecticutConnecticutConnecticut is a state in the New England region of the northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, and the state of New York to the west and the south .Connecticut is named for the Connecticut River, the major U.S. river that approximately...
area code 203Area code 203Area code 203 is the North American telephone area code that covers the southwestern part of Connecticut. The area code stretches from its western border, along its southern coast, to beyond the city of New Haven, and ends just south of Hartford. 203 overlays with area code 475...
. - 564Area code 564564 is a proposed area code for the state of Washington covering all of Western Washington, including Seattle. It would be an overlay plan for the 206, 253, 360, and 425 area codes...
planned for Washington area code 253Area code 253Area code 253 is a telephone dialing code in Washington for the suburbs south of Seattle and of the southern Puget Sound area, centered at Tacoma and extending to include the areas around Gig Harbor, Auburn, and Roy...
; this plan is suspended, as 253 is not estimated for exhaust until 2025. - Area Code 679, planned to overlay 734Area code 734Area code 734, created in 1997, covers southern portions of southeast Michigan, including all of Washtenaw and Monroe counties, and southern and western portions of Wayne County...
in Michigan. - 825 proposed as a future overlay in Alberta after 587Area code 587Area code 587 is a telephone area code that covers all of Alberta, Canada, in addition to the incumbent codes, 403 and 780. Numbers in this area code started being allocated in late 2008....
is exhausted. - 835 proposed to overlay 610 and 484. This plan has been suspended by the Pennsylvania Public Utilities Commission.
- 959, for 860Area code 860Area code 860 is a telephone area code that covers most of Connecticut, except its southwest, which use area codes 203 and 475. Area code 959, originally announced in August 1999, will overlay area code 860 when the 860 code nears exhaustion; a date for implementing the 959 area code has yet to be...
areas. Proposed 1999, but withdrawn. - 984 is planned for overlay of 919. This was originally planned in 2001 to take place in 2002, but has been postponed due to implementation of number poolingNumber poolingNumber pooling is a method of reallocating telephony numbering space in the North American Numbering Plan, primarily in growth areas in the United States....
.