List of counties in Arizona

&lt;onlyinclude&gt;
There are 15 counties in the U.S. state of Arizona. Four counties (Mohave, Pima, Yavapai and Yuma) were formed in 1864 in the Arizona Territory in 1862. All but La Paz County were formed by the time Arizona became a State in 1912.&lt;/onlyinclude&gt; There is also one county, Pah-Ute County, Arizona that was formed in 1865 from Mohave County and returned in 1871. 
The names of many of the counties honor the state's Native American past. Nine of the fifteen counties are named after native groups that live 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. Another county, Graham County, is named for a physical feature, Mount Graham. Greenlee County is named after one of the state's early pioneers. 
Arizona's United States postal abbreviations is AZ and its FIPS code is 04.
&lt;onlyinclude&gt;
Alphabetical listing.
&lt;includeonly&gt;