Yuma County, Arizona
County seat: Yuma · Population 224,449 (2025) · 5,514 sq mi
Yuma County is the 6th most populous of Arizona's 15 counties, with 224,449 people (2025 estimate). Its county seat is Yuma. The map shows its 4 cities and towns and the 4 neighboring counties.
Yuma County facts
- County seat
- Yuma
- Population (2025 estimate)
- 224,449 +9.5% since 2020
- Land area
- 5,514 sq mi 9th largest of 15
- Water area
- 5 sq mi
- Population density
- 41 per sq mi
- Established
- 1864
- Named after
- Fort Yuma Quechan Indian Tribe ethnic group and federally-recognized tribe in Arizona, United States
- Largest city
- Yuma 105,227
- Median household income
- $62,876
- Cities and towns
- 4 plus 17 CDPs
- ZIP codes
- 10
- Time zone
- Mountain (no DST)
- FIPS code
- 04027
Cities and towns in Yuma County
Yuma County has 4 incorporated cities, towns and villages. Populations count the people living inside Yuma County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Yuma (county seat) | City | 105,227 | |
| San Luis | City | 42,030 | |
| Somerton | City | 14,934 | |
| Wellton | Town | 2,671 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Fortuna Foothills | 28,896 | |
| Avenue B and C | 4,001 | |
| Rancho Mesa Verde | 759 | |
| Donovan Estates | 507 | |
| Gadsden | 493 | |
| Yuma Proving Ground | 468 | |
| Wall Lane | 374 | |
| Tacna | 353 | |
| El Prado Estates | 258 | |
| Orange Grove Mobile Manor | 211 | |
| Dateland | 206 | |
| Martinez Lake | 89 | |
| Drysdale | 66 | |
| Wellton Hills | 49 | |
| Buckshot | 45 | |
| Aztec | 0 | |
| Padre Ranchitos | 0 |
ZIP codes in Yuma County
10 ZIP codes reach into Yuma County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 85333 also Maricopa County
- 85336
- 85347
- 85349
- 85350
- 85352
- 85356
- 85364
- 85365
- 85367
Population of Yuma County, 2020–2025
Yuma County grew by 19,443 people (+9.5%) between April 2020 and July 2025: 4,307 more births than deaths and a net gain of 14,907 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 205,618 |
| 2021 | 207,654 |
| 2022 | 209,117 |
| 2023 | 214,228 |
| 2024 | 221,388 |
| 2025 | 224,449 |
Neighboring counties
- La Paz County north · 16,711 people
- Maricopa County northeast · 4,689,558 people
- Imperial County, California west · 181,411 people
- Pima County east · 1,074,685 people
Printable Yuma County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (79 KB)
- PNG (2400 px) (76 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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