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Contra Costa County, California

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At a glance

Market profile

Population
1,165,012
Households
414,417
Average household size
2.78
Median age
40.5 years
Median household income
$127,229
Housing units
429,260
Population comparison
2020 Census1,165,927
2024 estimate1,165,012
Change−0.1%

People

Who lives here

Population
1,165,012
Median age
40.5 years
Male
572,966
Female
592,046
Median age by sex
Male median age
39.5 years
Female median age
41.5 years
Age by sexPopulation distribution
31,657Under 530,267
98,8655–1795,211
47,32718–2445,533
71,15825–3470,945
81,79135–4483,106
78,38445–5479,552
74,74355–6477,203
89,04165+110,229
Age by sex values
CategoryMaleFemale
Under 531,65730,267
5–1798,86595,211
18–2447,32745,533
25–3471,15870,945
35–4481,79183,106
45–5478,38479,552
55–6474,74377,203
65+89,041110,229
View detailed source bins
5–17
Male
5–9
33,971
10–14
40,100
15–17
24,794
Female
5–9
34,676
10–14
36,863
15–17
23,672
18–24
Male
18–19
14,094
20
6,336
21
6,971
22–24
19,926
Female
18–19
13,032
20
6,144
21
5,987
22–24
20,370
25–34
Male
25–29
33,867
30–34
37,291
Female
25–29
33,159
30–34
37,786
35–44
Male
35–39
41,400
40–44
40,391
Female
35–39
40,716
40–44
42,390
45–54
Male
45–49
38,608
50–54
39,776
Female
45–49
39,652
50–54
39,900
55–64
Male
55–59
38,879
60–61
14,714
62–64
21,150
Female
55–59
38,508
60–61
15,601
62–64
23,094
65+
Male
65–66
11,818
67–69
17,056
70–74
24,838
75–79
16,971
80–84
10,156
85+
8,202
Female
65–66
13,247
67–69
19,866
70–74
28,886
75–79
20,712
80–84
12,636
85+
14,882
Detailed source values for Age by sex
RaceMutually exclusive counts
White alone
479,11041.1%
Asian alone
219,55718.8%
Two or more races
190,58516.4%
Some other race
162,26813.9%
Black alone
96,4088.3%
American Indian / Alaska Native
11,4381.0%
Native Hawaiian / Pacific Islander
5,6460.5%
Residents: 1,165,012.

Derived from published counts

Race values
CategoryValue
White alone479,110
Asian alone219,557
Two or more races190,585
Some other race162,268
Black alone96,408
American Indian / Alaska Native11,438
Native Hawaiian / Pacific Islander5,646

Ethnicity

Hispanic or Latino
321,749
White, not Hispanic
443,990

Hispanic or Latino ethnicity and White, not Hispanic are reported separately from race.

Households

Household structure

Family households
296,218
Married-couple share
75.7%
Derived from published counts
With children
48.2%
Derived from published counts
Household sizeShare of households
91,53422.1%
1 person
132,11731.9%
2 people
72,37217.5%
3 people
66,99616.2%
4 people
51,39812.4%
5+ people
View detailed source bins
5+ people
5 People
31,285
6 People
12,164
7 Plus People
7,949
Detailed source values for Household size
Household size values
CategoryValue
1 person91,534
2 people132,117
3 people72,372
4 people66,996
5+ people51,398
Family householdsEach subgroup is compared with its parent
All family households296,218
Married-couple families224,09375.7% of family households
With children
97,60643.6%
Without children
126,48756.4%
Other families72,12524.3% of family households
Male householder
22,03730.6%
Female householder
50,08869.4%
Family households values
GroupValueShare of parent
All family households296,218Not applicable
Married-couple families224,09375.7%
With children97,60643.6%
Without children126,48756.4%
Other families72,12524.3%
Male householder22,03730.6%
Female householder50,08869.4%

Income

Income distribution

Median household
$127,229
Median family
$148,679
Per capita
$62,927
Household incomeShare of households
36,1948.7%
Under $25k
41,1299.9%
$25–49k
44,87810.8%
$50–74k
42,54210.3%
$75–99k
72,29817.4%
$100–149k
55,54913.4%
$150–199k
121,82729.4%
$200k+
View detailed source bins
Under $25k
Under $10,000
14,089
$10,000–$14,999
7,888
$15,000–$19,999
7,065
$20,000–$24,999
7,152
$25–49k
$25,000–$29,999
7,934
$30,000–$34,999
8,307
$35,000–$39,999
8,635
$40,000–$44,999
8,695
$45,000–$49,999
7,558
$50–74k
$50,000–$59,999
17,740
$60,000–$74,999
27,138
$100–149k
$100,000–$124,999
39,249
$125,000–$149,999
33,049
Detailed source values for Household income
Household income values
CategoryValue
Under $25k36,194
$25–49k41,129
$50–74k44,878
$75–99k42,542
$100–149k72,298
$150–199k55,549
$200k+121,827

Education

Attainment and marital status

Education universe
816,152
High school or higher
89.6%
Derived from published counts
Bachelor’s or higher
45.2%
Derived from published counts
Educational attainmentAttainment distribution
45,2565.5%
Less than 9th grade
39,6504.9%
Grades 9–12, no diploma
146,67918.0%
High school or equivalent
149,97618.4%
Some college, no degree
65,4378.0%
Associate degree
224,52727.5%
Bachelor’s degree
144,62717.7%
Graduate or professional
View detailed source bins
Less than 9th grade
No Schooling
21,762
Nursery School
358
Kindergarten
220
First Grade
234
Second Grade
1,011
Third Grade
2,193
Fourth Grade
1,158
Fifth Grade
1,956
Sixth Grade
11,427
Seventh Grade
1,425
Eighth Grade
3,512
Grades 9–12, no diploma
Ninth Grade
6,200
Tenth Grade
5,274
Eleventh Grade
6,572
Twelfth No Diploma
21,604
High school or equivalent
Regular High School Diploma
128,150
Ged Or Alternative Credential
18,529
Some college, no degree
Some College Under 1 Year
44,995
Some College 1 Or More Years No Degree
104,981
Graduate or professional
Masters Degree
99,462
Professional School Degree
26,838
Doctorate Degree
18,327
Detailed source values for Educational attainment
Educational attainment values
CategoryValue
Less than 9th grade45,256
Grades 9–12, no diploma39,650
High school or equivalent146,679
Some college, no degree149,976
Associate degree65,437
Bachelor’s degree224,527
Graduate or professional144,627
Marital status by sexMale and Female
10,46335,410
Widowed
31,35653,653
Divorced
5,6338,654
Separated
259,034251,660
Now Married
166,385149,517
Never Married
21,44424,059
Married Spouse Absent
237,590227,601
Married Spouse Present
Marital status by sex values
CategoryMaleFemale
Widowed10,46335,410
Divorced31,35653,653
Separated5,6338,654
Now Married259,034251,660
Never Married166,385149,517
Married Spouse Absent21,44424,059
Married Spouse Present237,590227,601

Housing

Tenure, occupancy, and housing stock

Median home value
$866,800
Median gross rent
$2,375
Housing tenure
Owner
281,81968.0%
Renter
132,59832.0%
Occupied homes: 414,417.
Housing tenure values
CategoryValue
Owner281,819
Renter132,598
Housing occupancy
Occupied
414,41796.5%
Vacant
14,8433.5%
Housing units: 429,260.

Derived from published counts

Housing occupancy values
CategoryValue
Occupied414,417
Vacant14,843

Owner financing

Owners with mortgage
200,467
Owners without mortgage
81,352
Vacancy reason
For rent3,862
For sale1,965
Rented, not occupied770
Sold, not occupied739
Seasonal1,440
Migrant workers0
Other6,067
Vacancy reason values
CategoryValue
For rent3,862
For sale1,965
Rented, not occupied770
Sold, not occupied739
Seasonal1,440
Migrant workers0
Other6,067
Structure type
Detached289,697
Attached38,109
2–4 units24,154
5–19 units29,171
20+ units41,566
Mobile or other6,563
View detailed source bins
2–4 units
Structure 2 Units
6,150
Structure 3–4 Units
18,004
5–19 units
Structure 5–9 Units
15,814
Structure 10–19 Units
13,357
20+ units
Structure 20–49 Units
14,290
Structure 50 Plus Units
27,276
Mobile or other
Structure Mobile Home
6,126
Structure Boat Rv Van Other
437
Detailed source values for Structure type
Structure type values
CategoryValue
Detached289,697
Attached38,109
2–4 units24,154
5–19 units29,171
20+ units41,566
Mobile or other6,563
Year builtHousing units by period
98,90423.0%
Before 1960
129,40030.1%
1960–79
120,64328.1%
1980–99
75,68417.6%
2000–19
4,6291.1%
2020+
View detailed source bins
Before 1960
1939 Earlier
18,236
1940–1949
27,396
1950–1959
53,272
1960–79
1960–1969
54,107
1970–1979
75,293
1980–99
1980–1989
68,040
1990–1999
52,603
2000–19
2000–2009
50,760
2010–2019
24,924
Detailed source values for Year built
Year built values
CategoryValue
Before 196098,904
1960–79129,400
1980–99120,643
2000–1975,684
2020+4,629
Move-in periodOwner and Renter
Before 1990
42,166
1,796
1990s
38,363
3,229
2000s
61,384
12,586
2010s
99,906
67,825
2020–22
35,822
36,055
2023+
4,178
11,107
Move-in period values
CategoryOwnerRenter
Before 199042,1661,796
1990s38,3633,229
2000s61,38412,586
2010s99,90667,825
2020–2235,82236,055
2023+4,17811,107
Home valueOwner-occupied homes
7,5362.7%
Under $100k
6,1182.2%
$100–249k
26,2829.3%
$250–499k
71,35525.3%
$500–749k
63,40222.5%
$750–999k
49,81117.7%
$1–1.49m
57,31520.3%
$1.5m+
View detailed source bins
Under $100k
Under 10000
2,659
10000–14999
413
15000–19999
237
20000–24999
129
25000–29999
82
30000–34999
438
35000–39999
141
40000–49999
516
50000–59999
624
60000–69999
552
70000–79999
739
80000–89999
506
90000–99999
500
$100–249k
100000–124999
1,635
125000–149999
387
150000–174999
973
175000–199999
954
200000–249999
2,169
$250–499k
250000–299999
1,663
300000–399999
7,467
400000–499999
17,152
$1.5m+
1500000–1999999
26,838
2000000+
30,477
Detailed source values for Home value
Home value values
CategoryValue
Under $100k7,536
$100–249k6,118
$250–499k26,282
$500–749k71,355
$750–999k63,402
$1–1.49m49,811
$1.5m+57,315
Gross rentRenter-occupied homes
Under $5004,318
$500–9995,086
$1,000–1,49910,916
$1,500–1,99919,917
$2,000–2,49931,567
$2,500–2,99921,760
$3,000+34,244
View detailed source bins
Under $500
Under 100
86
100–149
43
150–199
119
200–249
193
250–299
532
300–349
1,559
350–399
621
400–449
758
450–499
407
$500–999
500–549
786
550–599
490
600–649
492
650–699
567
700–749
313
750–799
787
800–899
796
900–999
855
$1,000–1,499
1000–1249
4,582
1250–1499
6,334
$3,000+
3000–3499
14,791
3500+
19,453
Detailed source values for Gross rent
Gross rent values
CategoryValue
Under $5004,318
$500–9995,086
$1,000–1,49910,916
$1,500–1,99919,917
$2,000–2,49931,567
$2,500–2,99921,760
$3,000+34,244
Vehicle availabilityOwner and Renter
No vehicle
8,327
13,278
1 vehicle
64,092
52,972
2 vehicles
113,210
42,968
3 vehicles
61,370
16,125
4 vehicles
23,814
5,308
5+ vehicles
11,006
1,947
Vehicle availability values
CategoryOwnerRenter
No vehicle8,32713,278
1 vehicle64,09252,972
2 vehicles113,21042,968
3 vehicles61,37016,125
4 vehicles23,8145,308
5+ vehicles11,0061,947

Transportation

How residents get to work

Workers age 16+
551,854
Average commute
35.3 min
Travel mode
Drive alone
329,32759.7%Derived from published counts
Carpool
55,38010.0%Derived from published counts
Public transit
29,6975.4%Derived from published counts
Walk or bicycle
11,9362.2%Derived from published counts
Work from home
117,45421.3%Derived from published counts
Other
8,0601.5%Derived from published counts
Workers: 551,854.

Derived from published counts

View detailed source bins
Walk or bicycle
Walked
9,999
Bicycle
1,937
Other
Other Transportation
5,988
Motorcycle
1,077
Taxi Or Ride Hailing
995
Detailed source values for Travel mode
Travel mode values
CategoryValue
Drive alone329,327
Carpool55,380
Public transit29,697
Walk or bicycle11,936
Work from home117,454
Other8,060
Commute timeWorkers by travel time
81,71218.8%
Under 15 min
122,72528.3%
15–29 min
87,73520.2%
30–44 min
50,19511.6%
45–59 min
92,03321.2%
60+ min
View detailed source bins
Under 15 min
Under 5
8,195
5–9
27,199
10–14
46,318
15–29 min
15–19
53,943
20–24
48,582
25–29
20,200
30–44 min
30–34
51,288
35–39
14,282
40–44
22,165
60+ min
60–89
63,183
90+
28,850
Detailed source values for Commute time
Commute time values
CategoryValue
Under 15 min81,712
15–29 min122,725
30–44 min87,735
45–59 min50,195
60+ min92,033

Workforce

Labor force and job flows

Population age 16+
941,806
Civilian labor force
608,620
Employed
569,123
Unemployed
39,497
Unemployment rate
6.5%
Poverty universe
1,155,874
Persons below poverty
96,639
Gini index
0.47
White-collar workers
381,190
Blue-collar workers
93,765
Occupation by sexMale and Female
Service Occupations
41,117
53,051
Sales Office Occupations
41,418
65,812
Management Business Science Arts
137,932
136,028
Production Transportation Material Moving
38,887
10,941
Natural Resources Construction Maintenance
42,364
1,573
Occupation by sex values
CategoryMaleFemale
Service Occupations41,11753,051
Sales Office Occupations41,41865,812
Management Business Science Arts137,932136,028
Production Transportation Material Moving38,88710,941
Natural Resources Construction Maintenance42,3641,573

Employment and commuting

Resident workers
478,277
Workplace jobs
346,896
Internal commuters
168,151
Inbound commuters
178,745
Outbound commuters
310,126
Net worker inflow
Unavailable

Health insurance

Insurance coverage

Coverage status
Insured
1,106,27295.4%Derived from published counts
Uninsured
53,7424.6%
Residents: 1,160,014.
Coverage status values
CategoryValue
Insured1,106,272
Uninsured53,742
Uninsured by ageResidents without coverage
6,84812.7%
Under 19
19,51336.3%
Age 19–34
25,76147.9%
Age 35–64
1,6203.0%
Age 65+
Uninsured by age values
CategoryValue
Under 196,848
Age 19–3419,513
Age 35–6425,761
Age 65+1,620

Community

Nativity, citizenship, and mobility

Nativity
Native born
855,40173.4%
Foreign born
309,61126.6%
Residents: 1,165,012.
Nativity values
CategoryValue
Native born855,401
Foreign born309,611

Citizenship

Naturalized citizen
181,358
Not a citizen
128,253

Residential mobility

Same house
1,037,956
Within same county
58,585
From another county
39,054
From another state
10,485
From abroad
7,719

Sources and method

Vintages, quality, and methodology

Source vintages

Demographics
2024 ACS 5-year
Historical baseline
2020 Census
Employment
2023 LODES

Report quality

Status
complete
kind
published geography
estimated
false
Historical housing baseline
2020 housing units
423,342

The 2020 Census is used only as a historical population and housing baseline. It is not an annual population series and no intermediate years are inferred.

Named-geography values are published ACS estimates; margins of error are retained alongside direct values where supplied.

County demographics

About Contra Costa County, California

Contra Costa County, California has 1,165,012 residents and a median age of 40.5 years. It ranks No. 39 by population within this indexed county cohort. Population has declined 0.1% since the 2020 Census. Median household income is $46,495 above United States.

Market context

Compare the numbers.

Published values on the same 2024 ACS basis.
Comparison of selected demographic measures
GeographyPopulationMedian incomeMedian ageOwner occupied
Contra Costa County, California1,165,012$127,22940.5 years68%
United States334,922,500$80,73438.9 years65.2%
California39,287,377$99,12237.9 years55.9%

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