List of counties in Arizona

Last updated

Counties of Arizona
Category Federal Unit
Location State of Arizona
Populations7,754 (Greenlee) – 3,990,181 (Maricopa)
Areas1,238 square miles (3,210 km2) (Santa Cruz) – 18,661 square miles (48,330 km2) (Coconino)
Government County government
Subdivisionscities, towns, unincorporated communities, census designated place

There are 15 counties in the U.S. state of Arizona. [1] Four counties (Mohave, Pima, Yavapai and Yuma) were created in 1864 following the organization of the Arizona Territory in 1862. The now defunct Pah-Ute County was split from Mohave County in 1865, but merged back in 1871. All but La Paz County were created by the time Arizona was granted statehood in 1912. [2]

County (United States) Subdivision used by most states in the United States of America

In the United States, a county is an administrative or political subdivision of a state that consists of a geographic region with specific boundaries and usually some level of governmental authority. The term "county" is used in 48 U.S. states, while Louisiana and Alaska have functionally equivalent subdivisions called parishes and boroughs, respectively.

Arizona U.S. state in the United States

Arizona is a state in the southwestern region of the United States. It is also part of the Western and the Mountain states. It is the sixth largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona shares the Four Corners region with Utah, Colorado, and New Mexico; its other neighboring states are Nevada and California to the west and the Mexican states of Sonora and Baja California to the south and southwest.

Arizona Territory US 19th century-early 20th century territory

The Territory of Arizona was a territory of the United States that existed from February 24, 1863 until February 14, 1912, when the remaining extent of the territory was admitted to the Union as the state of Arizona. It was created from the western half of the New Mexico Territory during the American Civil War.


Eight of Arizona's fifteen counties are named after various Native American groups that are resident in parts of what is now Arizona, with another (Cochise County) being named after a native leader. Four other counties, Gila County, Santa Cruz County, Pinal County, and Graham County, are named for physical features of Arizona's landscape: the Gila River, the Santa Cruz River, Pinal Peak, and Mount Graham, respectively. Another county, La Paz County, is named after a former settlement, while the final county, Greenlee County, is named after one of the state's early pioneers. [3]

Indigenous peoples of the Americas Pre-Columbian inhabitants of North, Central and South America and their descendants

The indigenous peoples of the Americas are the Pre-Columbian peoples of North, Central and South America and their descendants.

Cochise County, Arizona County in the Arizona, United States

Cochise County is located in the southeastern corner of the U.S. state of Arizona. The population was 131,346 at the 2010 census. The county seat is Bisbee.

Gila County, Arizona U.S. county in Arizona

Gila County is a county in the central part of the U.S. state of Arizona. As of the 2010 census its population was 53,597. The county seat is Globe.

Under Arizona laws, a county shall not be formed or divided by county initiative unless each proposed county would have all of the following characteristics: (1) at least three-fourths of one percent of the total state assessed valuation and at least the statewide per capita assessed valuation; (2) a population of at least three-fourths of one percent of the total state population according to the most recent United States decennial census; (3) at least one hundred square miles of privately owned land; (4) common boundaries with either (a) at least three other existing or proposed counties; or (b) at least two other existing or proposed counties and the state boundary. [4] A county formation commission is required to be formed to evaluate the feasibility of the proposed county. [5] A proposal to divide a county must be approved by a majority of the votes cast in each proposed new county. [6]

Under the Arizona Constitution, counties are politically and legally creatures of the state, and do not have charters of their own. Counties are governed by boards of supervisors which act in the capacity of executive authority for the county within the statutes and powers prescribed by Arizona state law. The state legislature devotes considerable time to local matters, with limited discretion granted to the Board of Supervisors on minor ordinance and revenue collection issues.

Arizona's postal abbreviation is AZ and its FIPS code is 04.

Alphabetical listing

FIPS code [7] County seat [8] Est. [8] Formed from [2] Etymology [3] Population [8] [9] Area [8] [9] Map
ApacheCounty 001 St. Johns 1879Yavapai CountyThe Apache (Ndee) people. Apache is an exonym from Zuni ʔapaču "Navajos" or Yavapai ʔpačə "enemy".69,98011,218 sq mi
(29,054 km2)
Map of Arizona highlighting Apache County.svg
CochiseCounty 003 Bisbee 1881Pima County Cochise, a Chiricahua Apache chief and leader of an 1861 uprising. Cochise is an anglicisation of K'uu-ch'ish "oak".127,8666,219 sq mi
(16,107 km2)
Map of Arizona highlighting Cochise County.svg
CoconinoCounty 005 Flagstaff 1891Yavapai CountyCoconino is a former designation for the Havasupai, Hualapai, and/or Yavapai, derived from the Hopi exonym Kohonino.134,42118,661 sq mi
(48,332 km2)
Map of Arizona highlighting Coconino County.svg
GilaCounty 007 Globe 1881Maricopa and Pinal CountiesThe Gila River, a tributary of the Colorado. Possibly from Apache dzil "mountain," via Spanish Xila.51,9944,796 sq mi
(12,422 km2)
Map of Arizona highlighting Gila County.svg
GrahamCounty 009 Safford 1881Apache and Pima Counties Mount Graham, in the Pinaleños. Mt. Graham itself is named for topographical engineer James Duncan Graham. [10] 34,7694,641 sq mi
(12,020 km2)
Map of Arizona highlighting Graham County.svg
GreenleeCounty 011 Clifton 1909Graham CountyMason Greenlee, early prospector. Named by an amendment initially intended to delay the bill creating "Lincoln County". [11] 7,7541,848 sq mi
(4,786 km2)
Map of Arizona highlighting Greenlee County.svg
La PazCounty 012 Parker 1983Yuma County La Paz, Arizona, a historic boomtown on the Colorado River. A common placename, La Paz means "The Peace" in Spanish.20,1724,513 sq mi
(11,689 km2)
Map of Arizona highlighting La Paz County.svg
MaricopaCounty 013 Phoenix 1871Pima and Yavapai CountiesThe Maricopa (Piipaash) people. First attested in Spanish as Cocomaricopa, no origin or meaning is definitively known.3,990,1819,224 sq mi
(23,890 km2)
Map of Arizona highlighting Maricopa County.svg
MohaveCounty 015 Kingman 1864The Mohave (Aha Makhav) people. The Mohave endonym means "along the water," referring to the Colorado. [12] 194,94413,470 sq mi
(34,887 km2)
Map of Arizona highlighting Mohave County.svg
NavajoCounty 017 Holbrook 1895Apache CountyThe Navajo (Diné) people. Navajo is an exonym from Tewa Navahu "big field," referring to the San Juan River Valley 111,2739,959 sq mi
(25,794 km2)
Map of Arizona highlighting Navajo County.svg
PimaCounty 019 Tucson 1864The Pima (Akimel O'odham) people. Pima is a Spanish exonym from the O'odham phrase pi mac "(I) don't know," presumably heard during initial encounters.1,003,2359,189 sq mi
(23,799 km2)
Map of Arizona highlighting Pima County.svg
PinalCounty 021 Florence 1875Maricopa and Pima counties Pinal Peak, possibly from Spanish pinal "place of pines". Pinal Peak is now within the borders of Gila County.324,9625,374 sq mi
(13,919 km2)
Map of Arizona highlighting Pinal County.svg
Santa CruzCounty 023 Nogales 1899Cochise and Pima counties Santa Cruz River, a tributary of the Gila. A common placename, Santa Cruz means "Holy Cross" in Spanish.42,8451,238 sq mi
(3,206 km2)
Map of Arizona highlighting Santa Cruz County.svg
YavapaiCounty 025 Prescott 1864The Yavapai people. The Yavapé are one of four major Yavapai bands.212,6358,128 sq mi
(21,051 km2)
Map of Arizona highlighting Yavapai County.svg
YumaCounty 027 Yuma 1864Yuma is a former name of the Quechan people, derived from the O'odham exonym Yumĭ.190,5575,519 sq mi
(14,294 km2)
Map of Arizona highlighting Yuma County.svg

Defunct counties

Pah-Ute County, Arizona Territory

Pah-Ute County is a former county in the northwest corner of Arizona Territory that existed from 1865 until 1871, at which point most of the area was transferred to Nevada. The remainder was merged into Mohave County. The majority of the territory is now in Clark County, Nevada, which includes the city of Las Vegas. Due to the transfer of most of the county's land to Nevada, Pah-Ute is sometimes referred to as Arizona's "Lost County". Pah-Ute is an historic spelling of the tribal name Paiute.

Clark County, Nevada U.S. county in Nevada

Clark County is located in the U.S. state of Nevada. As of the 2010 census, the population was 1,951,269, with an estimated population of 2,231,647 in 2018. It is by far the most populous county in Nevada, accounting for nearly three-quarters of the state's residents – thus making Nevada one of the most centralized states in the United States.

Mohave County, Arizona U.S. county in Arizona

Mohave County is in the northwestern corner of the U.S. state of Arizona. As of the 2010 census, its population was 200,186. The county seat is Kingman, and the largest city is Lake Havasu City.

Proposed counties

See also

Related Research Articles

Graham County, Arizona U.S. county in Arizona

Graham County is a county located in the southeastern part of the U.S. state of Arizona. As of the 2010 census, the population was 37,220, making it the third-least populous county in Arizona. The county seat is Safford.

La Paz County, Arizona U.S. county in Arizona, United States

La Paz County is a county in the western part of the U.S. state of Arizona. As of the 2010 census, its population was 20,489, making it the second-least populous county in Arizona. The county seat is Parker. The name of the county is the Spanish word for "the peace", and is taken from the early settlement of La Paz along the Colorado River.

Maricopa County, Arizona County in Arizona

Maricopa County is located in the south-central part of the U.S. state of Arizona. The U.S. Census Bureau estimated its population was 4,410,824 as of 2018, making it the state's most populous county, and the fourth-most populous in the United States, containing more than half the population of Arizona. It is more populous than 23 states. The county seat is Phoenix, the state capital and fifth-most populous city in the United States.

Tempe, Arizona City in Arizona, United States

Tempe, is a city in Maricopa County, Arizona, United States, with the Census Bureau reporting a 2017 population of 185,038. 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 and the Salt River Pima–Maricopa Indian Community on the north, Chandler on the south, and Mesa on the east. Tempe is also the location of the main campus of Arizona State University.

Native Americans have inhabited what is now Arizona for thousands of years. It remains a state with one of the largest percentages of Native Americans in the United States, and has the second largest total Native American population of any state. In addition, the majority of the Navajo Nation, the largest Native American reservation in the US, and the entire Tohono O'odham Nation, the second largest, are located in Arizona. Over a quarter of the area of the state is reservation land.

United States District Court for the District of Arizona

The United States District Court for the District of Arizona is a federal court in the Ninth Circuit.

Mojave or Mohave is the native language of the Mohave people along the Colorado River in northwestern Arizona, southeastern California, and southwestern Nevada. Approximately 70% of the speakers reside in Arizona, while approximately 30% reside in California. It belongs to the River branch of the Yuman language family, together with Quechan and Maricopa.

Arizona Association of Counties member association for all elected officials of Arizonas 15 counties

The Arizona Association of Counties (AACo) was established in 1968 as a member association for all elected officials of Arizona's 15 counties. AACo represents each Arizona county and its elected officials by serving as a liaison to the Arizona State Legislature, United States Congress, other governmental agencies, the media and the public. AACo also sponsors various educational programs and renders professional services for the benefit of its membership and county government.

The 13th Arizona Territorial Legislative Assembly was a session of the Arizona Territorial Legislature which began on January 12, 1885, in Prescott, Arizona. The session's accomplishments included allocation of a variety of territorial institution including a university, normal school, prison, and insane asylum. Nicknames bestowed to the session include the "bloody thirteenth" due to fights in the halls of government and nearby saloons, and the "thieving thirteenth" due to the very large appropriations approved by this legislature.

The 2nd Arizona Territorial Legislative Assembly was a session of the Arizona Territorial Legislature which began on December 6, 1865, in Prescott, Arizona, and ran for 24 days. The sessions chief accomplishments were creation of Pah-Ute County and establishing Arizona as a community property jurisdiction.

Battle of Pima Butte

The Battle of Pima Butte, or the Battle of Maricopa Wells, was fought on September 1, 1857 at Pima Butte, Arizona near Maricopa Wells in the Sierra Estrella. Yuma, Mohave, Apache and Yavapai warriors attacked a Maricopa village named Secate in one of the largest battles in Arizona's history. It was also the last major battle fought by the Yumas and the last major battle fought solely between Native Americans in North America.

Maricopa Wells, Arizona Populated place in Arizona, United States

Maricopa Wells is a populated place situated in Pinal County, Arizona. It has an estimated elevation of 1,093 feet (333 m) above sea level. Historically, it was an oasis around a series of watering holes in the Sierra Estrella, eight miles north of present-day Maricopa, Arizona, and about a mile west of Pima Butte. It developed as a trading center and stopping place for travelers in the mid to late 19th century.

The 6th Arizona Territorial Legislative Assembly was a session of the Arizona Territorial Legislature which met in Tucson beginning on January 11, 1871, and ran until February 14, 1871.

Arizona Department of Homeland Security

The Arizona Department of Homeland Security (AZDOHS) is a state agency within the executive branch of the Arizona state government designed to develop, coordinate, and implement of a state policy to secure the state of Arizona from terrorist threat or attack. AZDOHS manages federal homeland security grants related to terrorism prevention and hazard management.

Jack D. H. Hays American judge

Jack D. H. Hays was a Justice of the Supreme Court of Arizona from January 4, 1969 to February 23, 1987. He served as Chief Justice for three consecutive terms, from January 1972 to December 1974. At the time of his death, Hays still held the record for the most opinions authored by a justice in any single year (100).

12th Arizona State Legislature Session of the Arizona Legislature

The 12th Arizona State Legislature, consisting of the Arizona State Senate and the Arizona House of Representatives, was constituted from January 1, 1935 to December 31, 1936, during Benjamin Baker Moeur's second term as Governor of Arizona, in Phoenix. The number of senators remained constant, while the number of representatives in the house decreased from 63 to 51. The Republicans broke the Democrats complete domination in the senate, managing to obtain a single seat, that of Apache County, however the house was entirely in Democratic hands.

Arizonas 7th legislative district

Arizona's 7th Legislative District is one of 30 in the state, covering portions of Coconino, Mohave, Navajo, Apache, Greenlee, Graham, Pinal, and Gila counties. As of 2018 there are 87 precincts in the district, 44 in Apache, 26 in Coconino, 9 in Navajo, 3 in Gila, 2 in both Graham and Mohave, and 1 in Pinal, with a total registered voter population of 122,421.


  1. "Find A County". Archived from the original on September 5, 2012. Retrieved April 7, 2012.
  2. 1 2 Adams, Ward R. (1997). History of Arizona. Higginson Book Company. ISBN   0-8328-7044-7.
  3. 1 2 Kane, Joseph & Aiken, Charles (2004). The American Counties: Origins of County Names, Dates of Creation, and Population Data, 1950–2000. Scarecrow Press. ISBN   0-8108-5036-2.
  4. Ariz. Rev. Stat. § 11-132(B)
  5. Ariz. Rev. Stat. § 11-136
  6. Ariz. Rev. Stat. § 11-137(H)
  7. "EPA County FIPS Code Listing". EPA. Archived from the original on September 28, 2004. Retrieved April 9, 2007.
  8. 1 2 3 4 National Association of Counties. "NACo – Find a county". Archived from the original on April 10, 2005. Retrieved April 30, 2008.
  9. 1 2 "Arizona QuickFacts". U.S. Census Bureau. Archived from the original on October 6, 2008. Retrieved July 17, 2007. (2000 Census)
  10. "A Little Bit of Mount Graham History". University of Arizona. Archived from the original on February 27, 2014. Retrieved 2015-03-0.Check date values in: |accessdate= (help)
  11. "History of Greenlee County: Mason Greenlee". Greenlee County Government. Archived from the original on February 19, 2014. Retrieved July 20, 2007.
  12. "The Name Mojave". Mojave Desert Heritage and Cultural Association. Archived from the original on February 13, 2015. Retrieved March 1, 2015.
  13. Rowe, Jeremy (2011). Early Maricopa County: 1871–1920. Arcadia Publishing. p. 39. ISBN   978-0-7385-7416-5 . Retrieved November 15, 2017.
  14. 1 2 Mark, Jay (January 12, 2017). "Tempe history: Tempe — Seat of Butte County". The Arizona Republic . Retrieved November 15, 2017.
  15. McClintock, James H. (1916). Arizona, Prehistoric, Aboriginal, Pioneer, Modern: The Nation's Youngest Commonwealth Within a Land of Ancient Culture, Volume 2. Arizona: S. J. Clarke publishing Company. p. 334. Retrieved February 17, 2017.