There are 15 counties

County (United States)

In the United States, a county is a geographic subdivision of a state , usually assigned some governmental authority. The term "county" is used in 48 of the 50 states; Louisiana is divided into parishes and Alaska into boroughs. Parishes and boroughs are called "county-equivalents" by the U.S...

 in the U.S. 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...

 of Arizona

Arizona

Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

. There is also one defunct county: Pah-Ute County

Pah-Ute County, Arizona

Pah-Ute County is a former county in the northwest corner of Arizona Territory that existed from 1865 until 1871. The majority of the county's territory is now in Clark County, Nevada, including the city of Las Vegas. Due to the transfer of most of the county's land to Nevada, Pah-Ute is known as...

 was formed in 1865 from Mohave County and returned in 1871. Four counties (Mohave, Pima, Yavapai and Yuma) were created in 1864 following the organization of the Arizona Territory

Arizona Territory

The Territory of Arizona was an organized incorporated territory of the United States that existed from February 24, 1863 until February 14, 1912, when it was admitted to the Union as the 48th state....

 in 1862. All but La Paz County were created by the time Arizona was granted statehood in 1912.

The names of many of the counties pay tribute to the state's Native American heritage. Fully 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

Santa Cruz County, Arizona

-2010:Whereas according to the 2010 U.S. Census Bureau:*73.5% White*0.4% Black*0.7% Native American*0.5% Asian*0.0% Native Hawaiian or Pacific Islander*2.0% Two or more races*22.9% Other races*82.8% Hispanic or Latino -2000:...

, and Pinal County. Another county, Graham County

Graham County, Arizona

-2010:Whereas according to the 2010 U.S. Census Bureau:*72.1% White*1.8% Black*14.4% Native American*0.5% Asian*0.1% Native Hawaiian or Pacific Islander*2.8% Two or more races*8.3% Other races*30.4% Hispanic or Latino -2000:...

, is named for a physical feature, Mount Graham

Mount Graham

Mount Graham is a mountain in southeastern Arizona in the United States, in the Coronado National Forest. It is the highest mountain in the Pinaleño Mountains. As the name "Mount Graham" is often used by locals to refer to the entire mountain range, the peak itself is frequently referred to as...

, with the final county, Greenlee County, being named after one of the state's early pioneers.

Arizona's postal abbreviation is AZ and its FIPS code

FIPS state code

FIPS state codes were numeric and two-letter alphabetic codes defined in U.S. Federal Information Processing Standard Publication 5-2 to identify U.S. states and certain other associated areas...

 is 04.

Alphabetical listing

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