County Maps US

Los Angeles County, California

The most populous of California's 58 counties.

CountyFIPS 06037

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

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Population
9,694,934
-301,576 (-3.0%) since 2020
Land area
4,060
square miles. A further 14.5% of the total area is water
Population density
2,388
people per square mile, computed rather than published
County seat
Los Angeles
Seat of county government.
Established
1850
175 years ago
Largest city
Los Angeles city
Population 3,869,089.

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 Los Angeles 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 Los Angeles 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 467 by 800 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 Los Angeles 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
Population9,694,9341st of 581st of 3,144
Land area4,060 sq mi11th of 58118th of 3,144
Population density2,388 per sq mi3rd of 5856th of 3,144
Median household income$90,11226th of 58294th of 3,143

Full data for Los Angeles County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population9,694,934Vintage 2025 Population Estimates
Population in 20209,996,510Vintage 2025 Population Estimates
2020 estimates base?10,017,414Vintage 2025 Population Estimates
Land area4,060 sq mi2025 Gazetteer Files
Water area689.2 sq mi2025 Gazetteer Files
Total area4,749 sq mi2025 Gazetteer Files
Population density?2,388 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$90,112American Community Survey 2020-2024 5-Year Estimates
Median home value$834,200American Community Survey 2020-2024 5-Year Estimates
Median age38.2American Community Survey 2020-2024 5-Year Estimates
Households3,416,449American Community Survey 2020-2024 5-Year Estimates
Housing units3,650,466American 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
+22,581
91,048 births, 68,467 deaths
Net migration
-76,146
More people moved out than moved in.

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

The 4 areas bordering Los Angeles 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
Kern CountyCalifornia74 mi927,068
Ventura CountyCalifornia71 mi830,851
San Bernardino CountyCalifornia66 mi2,224,091
Orange CountyCalifornia36 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.