Arizona ; is a state located in the southwestern region
Southwestern United States
The Southwestern United States is a region defined in different ways by different sources. Broad definitions include nearly a quarter of the United States, including Arizona, California, Colorado, Nevada, New Mexico, Oklahoma, Texas and Utah...

 of the United States. It is also part of the western United States and the mountain west
Mountain States
thumb|300px|Regional definitions vary from source to source. The states shown in dark red are always included, while the striped states are usually considered part of the same region called the Mountain States....

. The capital and largest city is Phoenix
Phoenix, Arizona
Phoenix is the capital, and largest city, of the U.S. state of Arizona, as well as the sixth most populated city in the United States. Phoenix is home to 1,445,632 people according to the official 2010 U.S. Census Bureau data...

. The second largest city is Tucson
Tucson, Arizona
Tucson is a city in and the county seat of Pima County, Arizona, United States. The city is located 118 miles southeast of Phoenix and 60 miles north of the U.S.-Mexico border. The 2010 United States Census puts the city's population at 520,116 with a metropolitan area population at 1,020,200...

, followed in size by eight Phoenix metropolitan area
Phoenix Metropolitan Area
The Phoenix metropolitan area, often referred to as The Valley of the Sun, is a metropolitan area, centered on the city of Phoenix, that includes much of the central part of the US state of Arizona...

 cities: Mesa
Mesa, Arizona
According to the 2010 Census, the racial composition of Mesa was as follows:* White: 77.1% * Hispanic or Latino : 26.54%* Black or African American: 3.5%* Two or more races: 3.4%* Native American: 2.4%...

, Glendale
Glendale, Arizona
Glendale is a city in Maricopa County, Arizona, USA, located about nine miles northwest from Downtown Phoenix. According to 2010 Census Bureau, the population of the city is 226,721....

, Chandler
Chandler, Arizona
-Demographics:As of the Census of 2010, there were 236,123 people, 86,924 households, and 60,212 families residing in the city. The racial makeup of the city was 73.3% White, 4.8% Black or African American, 1.5% Native American, 8.2% Asian, 0.2% Pacific Islander, 21.9% Hispanic or Latino, and 8.3%...

, Scottsdale
Scottsdale, Arizona
Scottsdale is a city in the eastern part of Maricopa County, Arizona, United States, adjacent to Phoenix. According to the U.S. Census Bureau, as of 2010 the population of the city was 217,385...

, Gilbert
Gilbert, Arizona
-Demographics:As of July 1, 2009, Maricopa Association of Governments, Census 2000. United States Census Bureau. there were 217,521 people, 74,147 housing units, and 3.01 persons per household....

, Tempe
Tempe, Arizona
Tempe is a city in Maricopa County, Arizona, USA, with the Census Bureau reporting a 2010 population of 161,719. The city is named after the Vale of Tempe in Greece. Tempe is located in the East Valley section of metropolitan Phoenix; it is bordered by Phoenix and Guadalupe on the west, Scottsdale...

, Peoria
Peoria, Arizona
Peoria is a city in Maricopa and Yavapai counties in the U.S. state of Arizona. Located primarily in Maricopa County, it is a major suburb of Phoenix. According to 2010 Census Bureau releases, the population of the city is 154,065. Peoria is currently the sixth largest city in Arizona for land...

, Surprise
Surprise, Arizona
Surprise is a city in Maricopa County, Arizona, USA. The population was 30,848 at the 2000 census; however, rapid growth has boosted the city's population to 117,517 at the 2010 census, an increase of 281%...

 and then by Yuma
Yuma, Arizona
Yuma is a city in and the county seat of Yuma County, Arizona, United States. It is located in the southwestern corner of the state, and the population of the city was 77,515 at the 2000 census, with a 2008 Census Bureau estimated population of 90,041....

 in Yuma County.

Arizona is the 48th state and last of the contiguous states
Contiguous United States
The contiguous United States are the 48 U.S. states on the continent of North America that are south of Canada and north of Mexico, plus the District of Columbia....

 admitted to the Union, achieving statehood on February 14, 1912.