County Maps US

Yolo County, California

A county in California, ranked 27 of 58 by population.

CountyFIPS 06113

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

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Population
224,410
+6,650 (+3.1%) since 2020
Land area
1,013
square miles. A further 0.9% of the total area is water
Population density
222
people per square mile, computed rather than published
County seat
Woodland
Seat of county government.
Established
1850
175 years ago
Largest city
Davis city
Population 66,110.

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 Yolo 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 Yolo 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 694 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 Yolo 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
Population224,41027th of 58321st of 3,144
Land area1,013 sq mi41st of 58665th of 3,144
Population density222 per sq mi19th of 58533rd of 3,144
Median household income$91,75225th of 58273rd of 3,143

Full data for Yolo County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population224,410Vintage 2025 Population Estimates
Population in 2020217,760Vintage 2025 Population Estimates
2020 estimates base?217,871Vintage 2025 Population Estimates
Land area1,013 sq mi2025 Gazetteer Files
Water area8.8 sq mi2025 Gazetteer Files
Total area1,022 sq mi2025 Gazetteer Files
Population density?222 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$91,752American Community Survey 2020-2024 5-Year Estimates
Median home value$620,700American Community Survey 2020-2024 5-Year Estimates
Median age32.1American Community Survey 2020-2024 5-Year Estimates
Households76,693American Community Survey 2020-2024 5-Year Estimates
Housing units82,447American 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
+488
1,893 births, 1,405 deaths
Net migration
+647
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 6 areas bordering Yolo 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
Solano CountyCalifornia47 mi455,376
Sacramento CountyCalifornia44 mi1,618,460
Napa CountyCalifornia39 mi132,949
Sutter CountyCalifornia38 mi98,787
Colusa CountyCalifornia27 mi21,836
Lake CountyCalifornia9.1 mi67,772

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

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.