Arizona County Map: All 15 Counties
Arizona contains only 15 counties across 113,594 square miles—the third-fewest of any state, resulting in some of the largest county-level administrative jurisdictions in the United States, including Coconino County (home to the Grand Canyon).
Arizona at a Glance
Arizona County Map
Counties of Arizona with the state capital, Phoenix, marked. Hover a shape for its name or click it to jump to its row in the list below.
Printable Blank Map of Arizona with All Counties
Download the Arizona outline as SVG or PNG, or print it to PDF, in several variants: blank boundary, with counties lines, color-filled and labeled. Free to use (CC0).
Arizona County Rankings: Population & Land Area
Comparative demographic and territorial distribution across Arizona's largest administrative subdivisions based on the 2020 US Census Decennial count.
Top 10 Most Populous Counties
| # | County | Seat | Population | % State |
|---|---|---|---|---|
| 1 | Maricopa County | Phoenix | 4,425,102 | 61.8% |
| 2 | Pima County | Tucson | 1,043,435 | 14.6% |
| 3 | Pinal County | Florence | 426,000 | 6.0% |
| 4 | Yavapai County | Prescott | 236,210 | 3.3% |
| 5 | Mohave County | Kingman | 213,276 | 3.0% |
| 6 | Yuma County | Yuma | 205,002 | 2.9% |
| 7 | Coconino County | Flagstaff | 145,104 | 2.0% |
| 8 | Cochise County | Bisbee | 125,445 | 1.8% |
| 9 | Navajo County | Holbrook | 106,714 | 1.5% |
| 10 | Apache County | St. Johns | 66,026 | 0.9% |
Top 10 Largest Counties by Land Area
| # | County | Seat | Land Area | % State |
|---|---|---|---|---|
| 1 | Coconino County | Flagstaff | 18,616.4 sq mi | 16.4% |
| 2 | Mohave County | Kingman | 13,332.1 sq mi | 11.7% |
| 3 | Apache County | St. Johns | 11,198.3 sq mi | 9.9% |
| 4 | Navajo County | Holbrook | 9,949.5 sq mi | 8.8% |
| 5 | Maricopa County | Phoenix | 9,201.8 sq mi | 8.1% |
| 6 | Pima County | Tucson | 9,188.7 sq mi | 8.1% |
| 7 | Yavapai County | Prescott | 8,122.9 sq mi | 7.2% |
| 8 | Cochise County | Bisbee | 6,209.8 sq mi | 5.5% |
| 9 | Yuma County | Yuma | 5,513.8 sq mi | 4.9% |
| 10 | Pinal County | Florence | 5,366 sq mi | 4.7% |
How Local Government Operates in Arizona: 3- to 5-Member Board of Supervisors
Governed by elected Boards of Supervisors. Despite their enormous geographic scale, Arizona counties operate under uniform statutory authority, with Maricopa County serving over 4.4 million residents.
Vast Territorial Scale: Coconino, Mohave, and the Grand Canyon Basin
Arizona counties resemble small sovereign states in physical dimensions, managing terrain ranging from Sonoran desert basins to 12,000-foot alpine peaks.
Coconino County spans 18,619 square miles across northern Arizona—an area larger than Connecticut, Delaware, Hawaii, and Rhode Island combined. It encompasses the entirety of Grand Canyon National Park, the San Francisco Peaks, and significant portions of the Navajo Nation and Hopi Reservation.
Because vast tracts of land in northern and western Arizona are owned by the federal government (National Park Service, US Forest Service, Bureau of Land Management) or held in trust for Native American sovereign nations, county governments have property tax jurisdiction over only a fraction of their total geographic surface.
In Coconino County, less than 15% of the total land area is privately held, making the county heavily reliant on federal Payments in Lieu of Taxes (PILT) and tourism sales tax revenues generated along Interstate 40 and Route 66.
Maricopa County contains over 4.4 million residents across 9,224 square miles, making it more populous than 24 individual US states.
Statutory vs. Charter Counties in Arizona Law
Article XII of the Arizona Constitution authorizes county home-rule charters, yet all 15 counties remain general-law statutory bodies.
Under Arizona law, counties with populations exceeding 500,000 are authorized to draft and adopt voter-approved home rule charters. Although Maricopa and Pima counties meet this threshold, voters have repeatedly preferred general-law statutory governance.
Arizona county governments manage sheriff patrols in unincorporated suburban master-planned developments, regional flood control districts, public health clinics, and the administration of early mail-in ballot processing.
Special districts—particularly the Central Arizona Water Conservation District (CAWCD) spanning Maricopa, Pinal, and Pima counties—manage the Colorado River aqueduct infrastructure that sustains municipal water supplies.
Arizona county sheriffs hold primary law enforcement jurisdiction over vast unincorporated desert expanses, rural highways, and county jail detention facilities.
Which county of Arizona are you in?
Use your device location to see which county of Arizona you are in right now.
List of All 15 Counties in Arizona
Every county in Arizona is listed below with its seat, 2020 Census population, land area and FIPS code. Search by name, seat or FIPS, sort any column, or export the full table as CSV.
County | Seat | 2020 Census Pop | Land Area (sq mi) | FIPS |
|---|---|---|---|---|
Maricopa County | Phoenix | 4,425,102 | 9,202 sq mi | 04013 |
Pima County | Tucson | 1,043,435 | 9,189 sq mi | 04019 |
Pinal County | Florence | 426,000 | 5,366 sq mi | 04021 |
Yavapai County | Prescott | 236,210 | 8,123 sq mi | 04025 |
Mohave County | Kingman | 213,276 | 13,332 sq mi | 04015 |
Yuma County | Yuma | 205,002 | 5,514 sq mi | 04027 |
Coconino County | Flagstaff | 145,104 | 18,616 sq mi | 04005 |
Cochise County | Bisbee | 125,445 | 6,210 sq mi | 04003 |
Navajo County | Holbrook | 106,714 | 9,950 sq mi | 04017 |
Apache County | St. Johns | 66,026 | 11,198 sq mi | 04001 |
Gila County | Globe | 53,271 | 4,757 sq mi | 04007 |
Santa Cruz County | Nogales | 47,668 | 1,236 sq mi | 04023 |
Graham County | Safford | 38,541 | 4,622 sq mi | 04009 |
La Paz County | Parker | 16,546 | 4,497 sq mi | 04012 |
Greenlee County | Clifton | 9,562 | 1,842 sq mi | 04011 |
Neighboring States Bordering Arizona
County maps, lists and printable blank maps for the states that border Arizona:
Data Sources & FIPS Codes
Arizona uses state FIPS code 04; each county adds a three-digit code to form the five-digit FIPS (now INCITS 31) identifiers in the table. Populations are 2020 Census counts and land areas come from the Census Gazetteer. The map above is drawn from the Census Bureau's generalized 2017 cartographic boundary file (1:10,000,000), so it suits overview and printing, not parcel-level or legal boundary questions; for those, check the local assessor or GIS office.
Questions About Arizona Counties
Why does Arizona have so few counties (only 15)?
When Arizona achieved statehood in 1912, the population was sparse and concentrated around mining camps and agricultural river valleys. Planners created large administrative territories centered on rail junctions rather than small horse-and-buggy counties.
What is the largest county in Arizona by land area?
Coconino County is the largest in Arizona and the second-largest in the contiguous United States, covering 18,618.7 square miles.
Do Native American reservations fall inside Arizona counties?
Yes, geographically reservation lands lie within county boundaries, and tribal members vote in county elections. However, tribal lands operate under sovereign tribal jurisdiction, meaning county zoning and criminal codes generally do not apply on trust land.
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