Pennsylvania has fourteen metropolitan statistical area

United States metropolitan area

In the United States a metropolitan statistical area is a geographical region with a relatively high population density at its core and close economic ties throughout the area. Such regions are not legally incorporated as a city or town would be, nor are they legal administrative divisions like...

s (MSAs) and four combined statistical areas (CSAs), as defined by the United States Census Bureau

United States Census Bureau

The United States Census Bureau is the government agency that is responsible for the United States Census. It also gathers other national demographic and economic data...

. Philadelphia ranks in the top ten United States metropolitan areas

United States metropolitan area

In the United States a metropolitan statistical area is a geographical region with a relatively high population density at its core and close economic ties throughout the area. Such regions are not legally incorporated as a city or town would be, nor are they legal administrative divisions like...

. In 2003, the U.S. Census introduced "metropolitan divisions" within some metropolitan areas. Pennsylvania has one metropolitan division within the Philadelphia–Camden–Wilmington MSA.

Metropolitan statistical areas (MSA's)

The following table lists population figures for those metropolitan statistical areas, in rank of population. Population figures are as of the 2003 U.S. Census estimates.

Rank	Metropolitan Area	Metropolitan Division	Population
1	Philadelphia–Camden–Wilmington (PA Pennsylvania The 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... -NJ New Jersey New 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... -DE Delaware Delaware is a U.S. state located on the Atlantic Coast in the Mid-Atlantic region of the United States. It is bordered to the south and west by Maryland, and to the north by Pennsylvania... )		5,772,947
		Philadelphia Philadelphia, Pennsylvania Philadelphia is the largest city in the Commonwealth of Pennsylvania and the county seat of Philadelphia County, with which it is coterminous. The city is located in the Northeastern United States along the Delaware and Schuylkill rivers. It is the fifth-most-populous city in the United States,...	3,849,647
2	Pittsburgh		2,410,330
3	Allentown–Bethlehem–Easton (PA Pennsylvania The 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... -NJ New Jersey New 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... )		790,535
4	Scranton Scranton, Pennsylvania Scranton is a city in the northeastern part of Pennsylvania, United States. It is the county seat of Lackawanna County and the largest principal city in the Scranton/Wilkes-Barre metropolitan area. Scranton had a population of 76,089 in 2010, according to the U.S... –Wilkes-Barre Wilkes-Barre, Pennsylvania Wilkes-Barre is a city in the U.S. state of Pennsylvania, the county seat of Luzerne County. It is at the center of the Wyoming Valley area and is one of the principal cities in the Scranton/Wilkes-Barre metropolitan area, which had a population of 563,631 as of the 2010 Census...		552,139
5	Harrisburg–Carlisle Harrisburg metropolitan area The Harrisburg–Carlisle Metropolitan Statistical Area , as defined the United States Census Bureau, is an area consisting of three counties in Pennsylvania's Susquehanna Valley, anchored by the cities of Harrisburg and Carlisle...		517,468
6	Lancaster Lancaster, Pennsylvania Lancaster is a city in the south-central part of the Commonwealth of Pennsylvania. It is the county seat of Lancaster County and one of the older inland cities in the United States, . With a population of 59,322, it ranks eighth in population among Pennsylvania's cities...		482,775
7	York York, Pennsylvania York, known as the White Rose City , is a city located in York County, Pennsylvania, United States which is in the South Central region of the state. The population within the city limits was 43,718 at the 2010 census, which was a 7.0% increase from the 2000 count of 40,862... –Hanover Hanover, Pennsylvania Hanover is a borough in York County, Pennsylvania, southwest of York and north-northwest of Baltimore, Maryland.The town is situated in a productive agricultural region. The population was 15,289 at the 2010 census. The borough is served by a 717 area code and the Zip Codes of 17331-34...		394,915
8	Reading Reading, Pennsylvania Reading is a city in southeastern Pennsylvania, USA, and seat of Berks County. Reading is the principal city of the Greater Reading Area and had a population of 88,082 as of the 2010 census, making it the fifth most populated city in the state after Philadelphia, Pittsburgh, Allentown and Erie,...		385,307
9	Erie Erie, Pennsylvania Erie is a city located in northwestern Pennsylvania in the United States. Named for the lake and the Native American tribe that resided along its southern shore, Erie is the state's fourth-largest city , with a population of 102,000...		279,966
10	Johnstown Johnstown, Pennsylvania Johnstown is a city in Cambria County, Pennsylvania, United States, west-southwest of Altoona, Pennsylvania and east of Pittsburgh. The population was 20,978 at the 2010 census. It is the principal city of the Johnstown, Pennsylvania, Metropolitan Statistical Area, which includes Cambria County...		150,452
11	State College State College, Pennsylvania State College is the largest borough in Centre County in the U.S. state of Pennsylvania. It is the principal city of the State College, Pennsylvania Metropolitan Statistical Area which encompasses all of Centre County. As of the 2010 census, the borough population was 42,034, and roughly double...		138,524
12	Altoona Altoona, Pennsylvania -History:A major railroad town, Altoona was founded by the Pennsylvania Railroad in 1849 as the site for a shop complex. Altoona was incorporated as a borough on February 6, 1854, and as a city under legislation approved on April 3, 1867, and February 8, 1868...		127,840
13	Sharon Sharon, Pennsylvania Sharon is a city in Mercer County, Pennsylvania, in the United States, northwest of Pittsburgh. It is part of the Youngstown–Warren–Boardman, OH-PA Metropolitan Statistical Area.- History :...		121,199
14	Williamsport Williamsport, Pennsylvania Williamsport is a city in and the county seat of Lycoming County, Pennsylvania in the United States. In 2009, the population was estimated at 29,304...		119,000

Combined statistical areas (CSA's)

The following table lists population figures for those combined statistical areas in Pennsylvania, in rank of population. Metropolitan population figures are as of the 2005 U.S. Census estimates. Pennsylvania county population figures are as of the 2003 U.S. Census.

Rank	Metropolitan Area	Counties	Population
1	Philadelphia–Camden–Vineland (PA Pennsylvania The 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... -NJ New Jersey New 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... -DE Delaware Delaware is a U.S. state located on the Atlantic Coast in the Mid-Atlantic region of the United States. It is bordered to the south and west by Maryland, and to the north by Pennsylvania... -MD Maryland Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east... )		5,951,797
		Bucks Bucks County, Pennsylvania - Industry and commerce :The boroughs of Bristol and Morrisville were prominent industrial centers along the Northeast Corridor during World War II. Suburban development accelerated in Lower Bucks in the 1950s with the opening of Levittown, Pennsylvania, the second such "Levittown" designed by...	613,110
		Chester Chester County, Pennsylvania -State parks:*French Creek State Park*Marsh Creek State Park*White Clay Creek Preserve-Demographics:As of the 2010 census, the county was 85.5% White, 6.1% Black or African American, 0.2% Native American or Alaskan Native, 3.9% Asian, 0.0% Native Hawaiian, 1.8% were two or more races, and 2.4% were...	457,393
		Delaware Delaware County, Pennsylvania Delaware County is a county located in the U.S. state of Pennsylvania. As of 2010, the population was 558,979, making it Pennsylvania's fifth most populous county, behind Philadelphia, Allegheny, Montgomery, and Bucks counties....	554,432
		Montgomery Montgomery County, Pennsylvania Montgomery County is a county located in the U.S. state of Pennsylvania, in the United States. As of 2010, the population was 799,874, making it the third most populous county in Pennsylvania . The county seat is Norristown.The county was created on September 10, 1784, out of land originally part...	770,747
		Philadelphia Philadelphia County, Pennsylvania -History:Tribes of Lenape were the first known occupants in the area which became Philadelphia County. The first European settlers were Swedes and Finns who arrived in 1638. The Netherlands seized the area in 1655, but permanently lost control to England in 1674...	1,479,339
2	Pittsburgh–New Castle New Castle, Pennsylvania New Castle is a city in Lawrence County, Pennsylvania, United States, northwest of Pittsburgh and near the Pennsylvania-Ohio border just east of Youngstown, Ohio; in 1910, the total population was 36,280; in 1920, 44,938; and in 1940, 47,638. The population has fallen to 26,309 according to the...  (PA Pennsylvania The 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... )		2,494,949
		Allegheny Allegheny County, Pennsylvania Allegheny County is a county in the southwestern part of the U.S. state of Pennsylvania. As of the 2010 census, the population was 1,223,348; making it the second most populous county in Pennsylvania, following Philadelphia County. The county seat is Pittsburgh...	1,261,303
		Armstrong Armstrong County, Pennsylvania Armstrong County is a county located in the U.S. state of Pennsylvania. As of the 2010 census, the population was 68,941. It is located northeast of Pittsburgh and Allegheny County. Armstrong County was added to the Pittsburgh Metropolitan Statistical Area in 2003.The county seat is Kittanning...	71,659
		Beaver Beaver County, Pennsylvania -Demographics:As of the census of 2000, there were 181,412 people, 72,576 households, and 50,512 families residing in the county. The population density was 418 people per square mile . There were 77,765 housing units at an average density of 179 per square mile...	178,697
		Butler Butler County, Pennsylvania -Demographics:As of the census of 2000, there were 174,083 people, 65,862 households, and 46,827 families residing in the county. The population density was 221 people per square mile . There were 69,868 housing units at an average density of 89 per square mile...	180,040
		Fayette Fayette County, Pennsylvania Fayette County is a county located in the U.S. state of Pennsylvania. As of the2010 census, the population was 136,606. The county is part of the Pittsburgh Metropolitan Statistical Area....	146,121
		Washington Washington County, Pennsylvania -Government and politics:As of November 2008, there are 152,534 registered voters in Washington County .* Democratic: 89,027 * Republican: 49,025 * Other Parties: 14,482...	204,286
		Westmoreland Westmoreland County, Pennsylvania -Demographics:As of the census of 2000, there were 369,993 people, 149,813 households, and 104,569 families residing in the county. The population density was 361 people per square mile . There were 161,058 housing units at an average density of 157 per square mile...	368,224
3	Harrisburg–Carlisle–Lebanon Harrisburg metropolitan area The Harrisburg–Carlisle Metropolitan Statistical Area , as defined the United States Census Bureau, is an area consisting of three counties in Pennsylvania's Susquehanna Valley, anchored by the cities of Harrisburg and Carlisle...  (PA Pennsylvania The 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... )		643,820
		Cumberland Cumberland County, Pennsylvania Cumberland County is a county located in the U.S. state of Pennsylvania and is one of three counties comprising the Harrisburg–Carlisle Metropolitan Statistical Area. As of 2010, the population was 235,406.-History:...	219,892
		Dauphin Dauphin County, Pennsylvania Dauphin County is a county in the U.S. state of Pennsylvania and is one of the three counties comprising the Harrisburg–Carlisle Metropolitan Statistical Area. As of 2010 census, the population was 268,100. The county includes the city of Harrisburg, which has served as the state capital...	253,388
		Lebanon Lebanon County, Pennsylvania As of the census of 2000, there were 120,327 people and 32,771 families residing in the county. The population density was 332 people per square mile . There were 49,320 housing units at an average density of 136 per square mile...	122,652
		Perry Perry County, Pennsylvania As of the census of 2000, there were 43,602 people, 16,695 households, and 12,320 families residing in the county. The population density was 79 people per square mile . There were 18,941 housing units at an average density of 34 per square mile...	44,188
4	York York, Pennsylvania York, known as the White Rose City , is a city located in York County, Pennsylvania, United States which is in the South Central region of the state. The population within the city limits was 43,718 at the 2010 census, which was a 7.0% increase from the 2000 count of 40,862... –Hanover Hanover, Pennsylvania Hanover is a borough in York County, Pennsylvania, southwest of York and north-northwest of Baltimore, Maryland.The town is situated in a productive agricultural region. The population was 15,289 at the 2010 census. The borough is served by a 717 area code and the Zip Codes of 17331-34... –Gettysburg Gettysburg, Pennsylvania Gettysburg is a borough that is the county seat, part of the Gettysburg Battlefield, and the eponym for the 1863 Battle of Gettysburg. The town hosts visitors to the Gettysburg National Military Park and has 3 institutions of higher learning: Lutheran Theological Seminary, Gettysburg College, and...  (PA Pennsylvania The 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... )		499,935
		Adams Adams County, Pennsylvania Adams County is a county in the U.S. state of Pennsylvania. As of the 2010 census, the population was 101,407. It was created on January 22, 1800, from part of York County and named in honor of the second President of the United States, John Adams...	96,456
		York York County, Pennsylvania York County is a county in the U.S. state of Pennsylvania. As of 2010, the population was 434,972. It is in the Susquehanna Valley, a large fertile agricultural region in South Central Pennsylvania....	394,915