Contra Costa County, California

53 cities & places have their primary county here.

Population: 1,161,458
Median household income: $125,727
Median home value: $830,800

Contra Costa County is a county in California with a population of 1,161,458. 53 cities and places have their primary county here. The median household income of $125,727 is above the California median ($96,334).

Between 2019 and 2023, Contra Costa County's population grew 1.7% from 1,142,251 to 1,161,458, while its median household income rose 26.1% from $99,716 to $125,727.

The typical home was built around 1978. 8.3% of residents live below the poverty line.

Demographics

ACS 2019–2023

Population: 1,161,458
Median age: 40.3 yrs
Median household income: $125,727
Median home value: $830,800
Median gross rent: $2,322
Housing units: 426,585
Homeownership rate: 67.7%
Bachelor's degree or higher: 44.9%
Unemployment rate: 5.9%

Trends

ACS 5-year · 2019–2023

Population

1,142,2511,161,458

Median household income

$99,716$125,727

Median home value

$625,800$830,800

Median gross rent

$1,819$2,322

Year	Population	Median household income	Median home value	Median gross rent
2019	1,142,251	$99,716	$625,800	$1,819
2020	1,147,788	$103,997	$655,500	$1,928
2021	1,161,643	$110,455	$689,000	$2,061
2022	1,162,648	$120,020	$787,300	$2,234
2023	1,161,458	$125,727	$830,800	$2,322

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 55.4%

5 to 1716.8%

18 to 248.0%

25 to 3412.3%

35 to 4414.0%

45 to 5413.7%

55 to 6413.2%

65 to 749.8%

75 and over6.9%

	Count	Share
Under 5	62,580	5.4%
5 to 17	195,512	16.8%
18 to 24	92,378	8.0%
25 to 34	142,762	12.3%
35 to 44	162,842	14.0%
45 to 54	158,757	13.7%
55 to 64	152,811	13.2%
65 to 74	113,835	9.8%
75 and over	79,981	6.9%

Race & ethnicity

	Count	Share
White (non-Hispanic)	455,961	39.3%
Black or African American	94,864	8.2%
American Indian & Alaska Native	1,806	0.2%
Asian	212,373	18.3%
Native Hawaiian & Pacific Islander	5,158	0.4%
Some other race	7,601	0.7%
Two or more races	66,896	5.8%
Hispanic or Latino (any race)	316,799	27.3%

Educational attainment (age 25+)

No high school diploma10.4%

High school graduate17.7%

Some college or associate's27.0%

Bachelor's degree27.4%

Graduate or professional degree17.5%

	Count	Share
No high school diploma	84,241	10.4%
High school graduate	143,600	17.7%
Some college or associate's	218,931	27.0%
Bachelor's degree	221,951	27.4%
Graduate or professional degree	142,265	17.5%

Commute to work

Mean travel time to work: 36 min

Drove alone60.8%

Carpooled9.7%

Public transit6.5%

Walked1.8%

Bicycle0.4%

Worked from home19.2%

Other means1.6%

How workers get to work

	Count	Share
Drove alone	337,276	60.8%
Carpooled	53,779	9.7%
Public transit	36,191	6.5%
Walked	10,145	1.8%
Bicycle	2,193	0.4%
Worked from home	106,457	19.2%
Other means	8,651	1.6%

Travel time

	Count	Share
Under 15 min	85,666	19.1%
15 to 29 min	122,415	27.3%
30 to 44 min	88,326	19.7%
45 to 59 min	52,654	11.7%
60+ min	99,174	22.1%

Households

Average household size: 2.79
Poverty rate: 8.3% (95,048 of 1,151,878)

	Count	Share
Family households	293,999	71.4%
Nonfamily households	117,663	28.6%

Housing

Median year structure built: 1978

Occupancy

	Count	Share
Occupied	411,662	96.5%
Vacant	14,923	3.5%

Tenure (of occupied units)

	Count	Share
Owner-occupied	278,509	67.7%
Renter-occupied	133,153	32.3%

1-unit, detached67.5%

1-unit, attached8.7%

2 to 4 units5.8%

5 to 19 units6.6%

20 or more units10.0%

Mobile home & other1.6%

Units in structure

	Count	Share
1-unit, detached	287,782	67.5%
1-unit, attached	37,026	8.7%
2 to 4 units	24,584	5.8%
5 to 19 units	27,958	6.6%
20 or more units	42,575	10.0%
Mobile home & other	6,660	1.6%

Geography

County GEOID: 06013
State: California
Land area: 717 sq mi
Water area: 87 sq mi
Center point: 37.9195, -121.9515