Arizona Counties
Complete list of all 15 counties in Arizona with population, area, median income, and county seats — plus a free printable blank map.
Labeled outline map of Arizona counties. Download a printable version in SVG, PNG, or PDF.
All 16 Arizona counties
| County | County Seat | Population ▼ | Area | Median Income | Cities |
|---|---|---|---|---|---|
| Maricopa | — | 4,488,680 | 9,200 mi² | $92,570 | 39 |
| Pima | — | 1,037,806 | 9,187 mi² | $73,857 | 16 |
| Pinal | — | 562,837 | 5,366 mi² | $88,741 | 25 |
| Yavapai | — | 246,864 | 8,124 mi² | $69,504 | 24 |
| Mohave | — | 220,023 | 13,311 mi² | $59,921 | 21 |
| Yuma | — | 211,343 | 5,514 mi² | $62,947 | 6 |
| Coconino | — | 143,943 | 18,619 mi² | $71,781 | 23 |
| Cochise | — | 118,611 | 6,166 mi² | $61,836 | 20 |
| Navajo | — | 97,451 | 9,950 mi² | $57,169 | 25 |
| McKinley | — | 69,373 | 0 mi² | $48,245 | 19 |
| Apache | — | 68,525 | 11,198 mi² | $45,360 | 29 |
| Gila | — | 61,482 | 4,758 mi² | $58,092 | 11 |
| Santa Cruz | — | 49,368 | 1,237 mi² | $55,486 | 7 |
| Graham | — | 47,281 | 4,623 mi² | $66,062 | 10 |
| La Paz | — | 16,664 | 4,500 mi² | $52,801 | 8 |
How many counties does Arizona have?
Arizona has 15 counties covering 113,596 square miles and roughly 7,449,663 residents. The state was admitted to the Union in 1912 as the 48th state, and the current county boundaries reflect more than a century of administrative subdivision.
The largest county by land area is Coconino County at 18,619 square miles, home to about 143,943 residents. The most populous is Maricopa County with approximately 4,488,680 residents — a density of about 488 people per square mile.
At the other end of the scale, Greenlee County has only about 9,412 residents.
Phoenix is both the state capital and the largest city in Arizona.
Related resources
Download a printable outline of Arizona’s county boundaries from our blank map of Arizona page — available in SVG, PNG, and PDF.
Use the What County Am I In? tool to detect which Arizona county a GPS location or address falls in, or the Address to County Lookup for batch input.
For demographic radius analysis, the Find ZIP Codes in Radius and Population Within Radius tools let you draw a circle around any Arizona address and see every ZIP code and the total population inside.
Two SimpleMapLab studies cover Arizona specifically: the 100-mile radius around Phoenix measures how much of the state lives within 100 miles of its capitol, and the loneliest town in Arizona ranks the state’s most isolated inhabited place. The county-counts blog post puts Arizona’s 15 counties in national context.
Frequently asked questions
Population and demographics are aggregated from ZIP-code-level US Census data via the SimpleMaps dataset. Countiesboundaries are from the US Atlas TopoJSON build of the Census Bureau’s TIGER/Line shapefiles. Land area is from the Census Gazetteer. State counts follow the US Census Bureau’s definition of counties and county-equivalents (50 states + DC = 3,143). All sources are public domain.