County Maps US

Riverside County, California

A county in California, ranked 4 of 58 by population.

CountyFIPS 06065

Within California
Riverside County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Riverside, the county seat, located via the 2025 Census Gazetteer.

Download SVGFull California map downloads

Population
2,544,916
+120,470 (+5.0%) since 2020
Land area
7,209
square miles. A further 1.3% of the total area is water
Population density
353
people per square mile, computed rather than published
County seat
Riverside
Seat of county government.
Established
1893
132 years ago
Largest city
Riverside city
Population 323,057.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Riverside County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Riverside County, California from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 260 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Riverside County ranks

Position among the 58 counties of California, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn CaliforniaNationally
Population2,544,9164th of 5810th of 3,144
Land area7,209 sq mi4th of 5842nd of 3,144
Population density353 per sq mi16th of 58384th of 3,144
Median household income$93,07422nd of 58251st of 3,143

Full data for Riverside County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population2,544,916Vintage 2025 Population Estimates
Population in 20202,424,446Vintage 2025 Population Estimates
2020 estimates base?2,419,962Vintage 2025 Population Estimates
Land area7,209 sq mi2025 Gazetteer Files
Water area93.7 sq mi2025 Gazetteer Files
Total area7,303 sq mi2025 Gazetteer Files
Population density?353 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$93,074American Community Survey 2020-2024 5-Year Estimates
Median home value$557,300American Community Survey 2020-2024 5-Year Estimates
Median age37.0American Community Survey 2020-2024 5-Year Estimates
Households775,335American Community Survey 2020-2024 5-Year Estimates
Housing units869,414American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+7,080
26,329 births, 19,249 deaths
Net migration
+8,568
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 5 areas bordering Riverside County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
San Bernardino CountyCalifornia204 mi2,224,091
San Diego CountyCalifornia86 mi3,282,248
Imperial CountyCalifornia85 mi181,411
La Paz CountyArizona60 mi16,711
Orange CountyCalifornia37 mi3,149,507

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

Side by side

All 58 counties of California

Open the interactive California county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.