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Yuma County, Arizona
Yuma County anchors Arizona's southwestern corner along the Colorado River and the Mexican border, with about 224,000 year-round residents concentrated in Yuma, San Luis and Somerton. Its economy is led by irrigated winter-vegetable agriculture — the county supplies a large share of North America's leafy greens between November and March — together with the Marine Corps Air Station Yuma and the Army's Yuma Proving Ground. The housing market is shaped by a substantial seasonal population that winters in the Foothills and surrounding RV and manufactured-home communities, and by cross-border commerce at the San Luis port of entry. Median home values remain the lowest of Arizona's larger counties.
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Yuma County at a glance
- 224,000Population (2025)
- YumaCounty seat
- 5,514 sq miLand area
- 41 / sq miDensity
- $62,900Median household income
- $217,800Median home value
What the live Yuma County map shows
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- City Boundaries: 4
- School Boundaries: 9
- Zoning: 72
- Traffic Counts: 137
- Bus Stops: 336
- Congressional Districts: 2
- County Commissioner Districts: 5
- Emergency Services: 27
- Evacuation Zones: 134
- Flood Zones: 6
- HUD: 33
- House Districts: 2
- Opportunity Zones: 8
- Parks & Golf: 85
- Schools: 93
- Senate Districts: 2
- Soils: 110
- Voter Precincts: 47
- Wetlands: 5
- Zip Codes: 11
Cities and towns in Yuma County
San Luis, Somerton, Wellton, Yuma.