List of counties in Arizona

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Counties of Arizona
Category Federal Unit
Location State of Arizona
Number 15
Populations 7,754 (Greenlee) – 3,990,181 (Maricopa)
Areas 1,238 square miles (3,210 km2) (Santa Cruz) – 18,661 square miles (48,330 km2) (Coconino)
Government County government
Subdivisions cities, 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]

The names of many of the counties pay tribute to the state's Native American heritage. Nine of the fifteen counties are named after various native groups that are resident in parts of what is now Arizona. Three of the other counties have Spanish names from the language of the early Hispanic explorers of Arizona: La Paz County, Santa Cruz County, and Pinal County. Another county, Graham County, is named for a physical feature, Mount Graham, with the final county, Greenlee County, being named after one of the state's early pioneers.[3]

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

Alphabetical listing

FIPS County Code
County seat
Formed from
Apache County 001 St. Johns 1879 Yavapai County The Apache (Ndee) people. Apache is an exonym from Zuni ʔapaču "Navajos" or Yavapai ʔpačə "enemy". 69,980 11,218 sq mi
(29,054 km2)
State map highlighting Apache County
Cochise County 003 Bisbee 1881 Pima County Cochise, a Chiricahua Apache chief and leader of an 1861 uprising. Cochise is an anglicisation of K'uu-ch'ish "oak". 127,866 6,219 sq mi
(16,107 km2)
State map highlighting Cochise County
Coconino County 005 Flagstaff 1891 Yavapai County Coconino is a former designation for the Havasupai, Hualapai, and/or Yavapai, derived from the Hopi exonym Kohonino. 134,421 18,661 sq mi
(48,332 km2)
State map highlighting Coconino County
Gila County 007 Globe 1881 Maricopa and Pinal Counties The Gila River, a tributary of the Colorado. Gila is from the O'odham name for the river, Keli "old man, elder". 51,994 4,796 sq mi
(12,422 km2)
State map highlighting Gila County
Graham County 009 Safford 1881 Apache and Pima Counties Mount Graham, in the Pinaleños. Mt. Graham itself is named for topographical engineer James Duncan Graham.[6] 34,769 4,641 sq mi
(12,020 km2)
State map highlighting Graham County
Greenlee County 011 Clifton 1909 Graham County Mason Greenlee, early prospector. Named by an amendment initially intended to delay the bill creating "Lincoln County".[7] 7,754 1,848 sq mi
(4,786 km2)
State map highlighting Greenlee County
La Paz County 012 Parker 1983 Yuma County La Paz, Arizona, a historic boomtown on the Colorado River. A common placename, La Paz means "The Peace" in Spanish. 20,172 4,513 sq mi
(11,689 km2)
State map highlighting La Paz County
Maricopa County 013 Phoenix 1871 Pima and Yavapai Counties The Maricopa (Piipaash) people. First attested in Spanish as Cocomaricopa, no origin or meaning is definitively known. 3,990,181 9,224 sq mi
(23,890 km2)
State map highlighting Maricopa County
Mohave County 015 Kingman 1864 The Mohave (Aha Makhav) people. The Mohave endonym means "along the water," referring to the Colorado.[8] 194,944 13,470 sq mi
(34,887 km2)
State map highlighting Mohave County
Navajo County 017 Holbrook 1895 Apache County The Navajo (Diné) people. Navajo is an exonym from Tewa Navahu "big field," referring to the San Juan River Valley 111,273 9,959 sq mi
(25,794 km2)
State map highlighting Navajo County
Pima County 019 Tucson 1864 The 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. 1,003,235 9,189 sq mi
(23,799 km2)
State map highlighting Pima County
Pinal County 021 Florence 1875 Maricopa and Pima counties Pinal Peak, possibly from Spanish pinal "place of pines". Pinal Peak is now within the borders of Gila County. 324,962 5,374 sq mi
(13,919 km2)
State map highlighting Pinal County
Santa Cruz County 023 Nogales 1899 Cochise and Pima counties Santa Cruz River, a tributary of the Gila. A common placename, Santa Cruz means "Holy Cross" in Spanish. 42,845 1,238 sq mi
(3,206 km2)
State map highlighting Santa Cruz County
Yavapai County 025 Prescott 1864 The Yavapai people. The Yavapé are one of four major Yavapai bands. 212,635 8,128 sq mi
(21,051 km2)
State map highlighting Yavapai County
Yuma County 027 Yuma 1864 Yuma is a former name of the Quechan people, derived from the O'odham exonym Yumĭ. 190,557 5,519 sq mi
(14,294 km2)
State map highlighting Yuma County

Defunct counties

See also


  1. 1.0 1.1 1.2 1.3 1.4 "Find A County". National Association of Counties. Retrieved 2012-04-07.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles> Cite error: Invalid <ref> tag; name "NACO" defined multiple times with different content
  2. 2.0 2.1 Adams, Ward R. (1997). History of Arizona. Higginson Book Company. ISBN 0-8328-7044-7.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  3. 3.0 3.1 Kane, Joseph and 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. <templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  4. "EPA County FIPS Code Listing". EPA. Retrieved 2007-04-09.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  5. 5.0 5.1 "Arizona QuickFacts". U.S. Census Bureau. Archived from the original on October 6, 2008. Retrieved 2007-07-17.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles> (2000 Census)
  6. "A Little Bit of Mount Graham History". University of Arizona. Archived from the original on 2014-02-27. Retrieved 2015-03-0. Check date values in: |accessdate= (help)<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  7. "History of Greenlee County: Mason Greenlee". Greenlee County Government. Archived from the original on 2014-02-19. Retrieved 2007-07-20.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  8. "The Name Mojave". Mojave Desert Heritage and Cultural Association. Archived from the original on 2015-02-13. Retrieved 2015-03-01.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>