Demographic Characteristics of Contra Costa County, California
Total Population: 948,816
Contra Costa County, California Age/Gender Statistics
 Male Population: 463,270 (48.83%) |
 Female Population: 485,546 (51.17%) |
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| Under 5 years | 66,128 | 45 to 54 years: | 141,988 |
| 5 to 9 years: | 73,031 | 55 to 59 years: | 48,758 |
| 10 to 14 years: | 72,017 | 60 to 64 years: | 35,660 |
| 15 to 19 years: | 63,124 | 65 to 74 years: | 54,722 |
| 20 to 24 years: | 50,696 | 75 to 84 years: | 39,179 |
| 25 to 34 years: | 126,387 | 85 years and over: | 13,371 |
| 35 to 44 years: | 163,755 | ||
| Median Age: 36.4 | |||
Contra Costa County, California Racial Statistics
One Race
900,102
White
621,490
Black or African American
88,813
American Indian and Alaska Native
5,830
Asian
103,993
Asian Indian
11,683
Chinese
28,948
Filipino
34,595
Japanese
7,867
Korean
5,142
Vietnamese
5,168
Other Asian
10,590
Native Hawaiian and Other Pacific Islander
3,466
Native Hawaiian
724
Guamanian or Chamorro
545
Samoan
634
Other Pacific Islander
1,563
Some other race
76,510
Two or more races
48,714
Contra Costa County, California Hispanic Population Statistics
| Total Hispanic or Latino Population: 167,776 | |||
| Mexican | Puerto Rican | Cuban | Other |
| 112,245 | 4,957 | 1,167 | 49,407 |
Contra Costa County, California Relationship Statistics
| In households: 937,479 (98.81%) | In group quarters: 11,337 (1.19%) | ||
| Householder | 344,129 | Institutionalized | 5,292 |
| Spouse | 187,613 | Noninstitutionalized | 6,045 |
| Child | 290,908 | ||
| Own child under 18 years | 225,435 | ||
| Other relatives | 60,893 | ||
| Under 18 years | 20,504 | ||
| Nonrelatives | 53,936 | ||
| Unmarried partner | 19,228 | ||