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La Paz County, Arizona
La Paz County sits on the Colorado River along the California line, with about 16,700 year-round residents over 4,497 square miles. Parker, the county seat, and the river corridor support waterfront and recreational property, while Quartzsite draws a very large seasonal winter influx of RV and snowbird visitors on federal long-term visitor areas — so the functional population and the resident count diverge sharply by season. Irrigated agriculture along the river is the other significant land use, and the Colorado River Indian Tribes reservation covers a substantial share of the county. Median home value is $135,800 against median household income of $49,500.
Open the live La Paz County map →
La Paz County at a glance
- 16,711Population (2025)
- ParkerCounty seat
- 4,497 sq miLand area
- 4 / sq miDensity
- $49,500Median household income
- $135,800Median home value
What the live La Paz County map shows
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- City Boundaries: 2
- School Boundaries: 6
- Zoning: 71
- Traffic Counts: 11
- Congressional Districts: 2
- County Commissioner Districts: 3
- Emergency Services: 7
- Evacuation Zones: 66
- Flood Zones: 6
- HUD: 6
- House Districts: 3
- Opportunity Zones: 2
- Parks & Golf: 23
- Schools: 14
- Senate Districts: 3
- Soils: 177
- Voter Precincts: 11
- Wetlands: 5
- Zip Codes: 11
Cities and towns in La Paz County
Parker, Quartzsite.
Neighboring counties
- Yuma County, AZ · map
- Imperial County, CA · map
- Maricopa County, AZ · map
- Riverside County, CA · map
- Yavapai County, AZ · map
- Mohave County, AZ · map
- San Bernardino County, CA · map