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Contra Costa County, California

Contra Costa County, California · ZIP 94505, 94506, 94507

  • Census data · ACS 2019-2023
Browse the 53 townsFind my townSponsor a town here
  • 1,172,607 (2024 estimate)Population
  • 411,662Households
  • $125,727Median household income
  • $830,800Median home value
  • 53Towns with a page
  • 48ZIP codes

Contra Costa County in numbersOfficial sources, refreshed yearly

Population, 2000 to 2020+22.9%
900k1M1.1M1.2M2000: 948,81620002010: 1,049,02520102020: 1,165,9272020948,8161,165,927
Population of Contra Costa County at each census
CensusPopulation
2000948,816
20101,049,025
20201,165,927

As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.

Sources: Census 2000 Summary File 1: total population, county level, state 06, retrieved November 14, 2026; Census 2010 Summary File 1: total population, county level, state 06, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, county level, state 06, retrieved November 14, 2026.

Household income in Contra Costa County
Under $50k18.9%
$50k to $100k21%
$100k to $150k17.9%
$150k to $200k13.6%
$200k and over28.5%

Median household income $125,727 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.

Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, county level, state 06, retrieved November 14, 2026.

Housing tenure in Contra Costa County
Owner occupied
278,509 units
Renter occupied
133,153 units
Vacancy rate
3.5%

Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.

Source: American Community Survey 5-year data profile 2019–2023, county level, state 06, retrieved November 14, 2026.

Jobs by sector in Contra Costa County2023
Health care and social assistance63,965
Retail trade42,831
Accommodation and food services35,253
Professional, scientific, and technical services28,708
Construction27,489
Administrative and support and waste management and remediation services25,794
Finance and insurance17,956
Other services (except public administration)17,181

343,690 employees in 25,932 establishments with payroll in 2023, all sectors; employers themselves are not named in the source. County Business Patterns counts are published with noise.

Source: County Business Patterns 2023: employment by sector, county level, state 06, retrieved November 14, 2026.

Contra Costa County compared with its state
Contra Costa County compared with its state, American Community Survey 2019-2023
MeasureContra Costa CountyCalifornia
Population1,161,45839,242,785
Median household income$125,727$96,334
Median age40.337.6
Median home value$830,800$695,400
Bachelor’s degree or higher44.9%36.5%
Foreign-born residents26.2%26.7%
Owner-occupied homes67.7%55.8%
Mean commute to work36.0 minutes29.0 minutes

Source: American Community Survey 5-year data profile 2019–2023, county level, state 06, retrieved November 14, 2026.

Townships, towns and villages in Contra Costa County53 with a page · sort by any column

Type
ConcordCity124,01630.6 sq mi
AntiochCity118,45329.2 sq mi
RichmondCity115,35330.0 sq mi
San RamonCity85,92420.1 sq mi
PittsburgCity77,13118.6 sq mi
Walnut CreekCity70,81719.8 sq mi
BrentwoodCity66,28614.9 sq mi
OakleyCity47,15815.9 sq mi
DanvilleTown43,41018.1 sq mi
MartinezCity37,00612.6 sq mi
Pleasant HillCity34,1697.08 sq mi
San PabloCity31,5622.62 sq mi
HerculesCity26,4996.41 sq mi
El CerritoCity26,4093.67 sq mi
LafayetteCity25,37115.0 sq mi
Bay PointCensus designated place24,0656.43 sq mi
OrindaCity19,57312.9 sq mi
PinoleCity18,6635.10 sq mi
MoragaTown16,6989.46 sq mi
El SobranteCensus designated place15,8233.10 sq mi
Discovery BayCensus designated place15,2435.59 sq mi
AlamoCensus designated place14,4419.82 sq mi
ClaytonCity10,9333.84 sq mi
BlackhawkCensus designated place10,4045.78 sq mi
RodeoCensus designated place8,7353.75 sq mi
Contra Costa CentreCensus designated place7,1270.64 sq mi
Camino TassajaraCensus designated place6,3951.28 sq mi
SaranapCensus designated place5,6931.13 sq mi
KensingtonCensus designated place5,2920.96 sq mi
Tara HillsCensus designated place4,9120.67 sq mi
PachecoCensus designated place4,6570.75 sq mi
San MiguelCensus designated place3,9911.05 sq mi
North RichmondCensus designated place3,9351.39 sq mi
CrockettCensus designated place3,6421.06 sq mi
RollingwoodCensus designated place3,6230.17 sq mi
Vine HillCensus designated place3,6171.50 sq mi
East Richmond HeightsCensus designated place3,3110.58 sq mi
Reliez ValleyCensus designated place3,0062.36 sq mi
BayviewCensus designated place2,5330.30 sq mi
Bethel IslandCensus designated place2,1445.25 sq mi
Montalvin ManorCensus designated place2,0800.32 sq mi
Mountain ViewCensus designated place2,0720.29 sq mi
KnightsenCensus designated place2,0188.36 sq mi
ByronCensus designated place1,8766.52 sq mi
Castle HillCensus designated place1,3030.58 sq mi
DiabloCensus designated place1,0721.36 sq mi
Acalanes RidgeCensus designated place1,0250.46 sq mi
Shell RidgeCensus designated place9980.43 sq mi
Alhambra ValleyCensus designated place9371.61 sq mi
Norris CanyonCensus designated place8463.61 sq mi
North GateCensus designated place7190.74 sq mi
ClydeCensus designated place7160.14 sq mi
Port CostaCensus designated place1940.16 sq mi

Populations: Census Population Estimates, Vintage 2024: subcounty totals, state 06 (2024). Land areas: Census Gazetteer 2025: counties. A dash means the figure is not in the cited file.

County officialsFrom public records

No county official is published yet. Names appear once a researcher drafts them from the county’s own site and a second person approves; office contacts only, never personal details.

Across Contra Costa County

Jobs across Contra Costa County

No job is posted in Contra Costa County’s towns yet. Employers post from their business dashboard; public job banks are added once their terms are recorded.

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Events in the next 31 days

No upcoming event is listed in Contra Costa County's towns yet. Members and businesses add events from any town page.

Latest postsRolled up from the towns

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Neighboring counties

Neighboring counties

Sources: Census county adjacency file 2024, retrieved November 14, 2026; Census Population Estimates, Vintage 2024: subcounty totals, state 06, retrieved November 14, 2026.