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Contra Costa County, California: property tax rate, home values and income

Effective property tax rate

0.83%

4th highest of 58 counties in California

Median home value

$830,800

9th highest in California

Median household income

$125,727

6th highest in California

Population

1,161,458

Census ACS 2023

Sources: US Census Bureau, American Community Survey 5-year estimates · Updated 11/03/2026

In Contra Costa County, California the effective property tax rate is 0.83%. The median homeowner pays $6,903 a year in real estate taxes on a home with a median value of $830,800. That rate is the 4th highest of the 58 California counties with published data, and the 1573rd highest of 3,132 counties in the United States.

Property tax in Contra Costa County

The effective rate is the median real estate tax paid divided by the median home value. The California statewide average is 0.71%, so Contra Costa County is above it. Applying this county's rate to other home prices gives a rough idea of the yearly bill; actual bills depend on the school district, exemptions and the assessed value.

Home valueEstimated tax per yearPer month
$200,000$1,660$138
$300,000$2,490$208
$400,000$3,320$277
$500,000$4,150$346
$830,800 (county median)$6,900$575

Home values and incomes

The median home value is $830,800 (9th highest in California, 21st highest nationally) and the median household income is $125,727. Homes cost about 6.6 times a typical household's yearly income. Median gross rent is $2,322 a month. 67.7% of occupied homes are owner-occupied. Homeowners with a mortgage pay a median of $1,420 a year for insurance. For comparison, the California statewide median home value is $761,538.

Counties near Contra Costa County in the California property tax ranking

CountyEffective rateMedian home value
Kern County0.91%$310,600
Placer County0.85%$658,800
Imperial County0.84%$279,500
Contra Costa County0.83%$830,800
Riverside County0.82%$510,300
San Benito County0.81%$751,500
Sierra County0.78%$334,100

Frequently asked questions

What is the property tax rate in Contra Costa County, California?

The effective property tax rate is 0.83% of home value per year, the 4th highest of 58 counties in California (Census ACS 2023 5-year estimates).

How much is property tax on a $300,000 home in Contra Costa County?

At the county's effective rate of 0.83%, about $2,490 a year (roughly $208 a month). Your actual bill depends on the assessed value, your school district and exemptions.

What is the median home value in Contra Costa County?

The median home value is $830,800 (Census ACS 2023 5-year estimates, owner-occupied homes).

What is the median household income in Contra Costa County?

The median household income is $125,727 (Census ACS 2023 5-year estimates).