Yolo County, California

County seat: Woodland · Population 224,410 (2025) · 1,013 sq mi

Yolo County is the 27th most populous of California's 58 counties, with 224,410 people (2025 estimate). Its county seat is Woodland. The map shows its 4 cities and towns and the 6 neighboring counties.

Map of Yolo County, California with cities, towns and the county boundary
Yolo County, California with its cities and towns, unincorporated communities (CDPs) and neighboring counties. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).
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Yolo County facts

County seat
Woodland
Population (2025 estimate)
224,410 +3% since 2020
Land area
1,013 sq mi 41st largest of 58
Water area
9 sq mi
Population density
222 per sq mi
Established
1850
Largest city
Davis 66,110
Median household income
$91,752
Cities and towns
4 plus 13 CDPs
ZIP codes
19
Time zone
Pacific
FIPS code
06113

Cities and towns in Yolo County

Yolo County has 4 incorporated cities, towns and villages. Populations count the people living inside Yolo County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
DavisCity66,110
Woodland (county seat)City62,513
West SacramentoCity56,216
WintersCity8,214

Unincorporated communities (CDPs)

Census-designated places are communities without their own city government; the county provides their services.

CommunityPopulationAlso in
University of California-Davis8,696
Esparto3,713
Monument Hills1,551
Knights Landing1,099
Madison805
Yolo800
El Macero796
Dunnigan537
Clarksburg288
Guinda248
Rumsey80
Tancred68
Brooks0

ZIP codes in Yolo County

19 ZIP codes reach into Yolo County. ZIP codes ignore county lines, so some also cover a neighboring county.

Population of Yolo County, 2020–2025

Yolo County grew by 6,539 people (+3%) between April 2020 and July 2025: 2,320 more births than deaths and a net gain of 3,721 people from migration.

Year (July 1)Population
2020217,760
2021213,524
2022222,854
2023221,962
2024223,260
2025224,410

Neighboring counties

Printable Yolo County map

The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.

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Sources

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