Contra Costa County, California

Contra Costa County is a county located in the United States of California. In 2000, the population was 948816. It has an estimated population (as of July 2008) of 1029703, making it the ninth most populous county in California. It covers total area of 802.15 square miles (2077.56 sq km), of which, 719.95 square miles (1864.66 sq km) of it is land and 82.2 square miles (212.9 sq km) of it is water, making it California's ninth smallest county by total area.

Contra Costa County California
Map of Contra Costa County, California

As of the census of 2000, there were 948816 people, 344129 households, and 242233 families living in the county. The population density was 1317.9 people per square mile (508.84/kmē), it is sixth most densely populated county in California. There were 354577 housing units at an average density of 492.5 per square mile (190.16/kmē). The average household size was 2.72 and the average family size was 3.23. Age range in the county was well distributed with 26.5% under the age of 18, 7.7% from 18 to 24, 30.6% from 25 to 44, 23.9% from 45 to 64, and 11.3% who were 65 or older. For every 100 females there were 95.4 males. For every 100 females age 18 and over, there were 92.2 males. Its population in July 2008 was estimated to be about 1029703, The racial makeup of the county was 738215 White, 99765 Black or African American, 8116 American Indian, 141131 Asian, 5210 Native Hawaiian, and 37266 from two or more races.

Contra Costa County California Population 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Population 2000-2008
Contra Costa County California School Enrollment
School Enrollment 2000
Contra Costa County California GDP
GDP 2000

The median income for a household in the county was $63675, it is the fourth highest county by median household income in the U.S. state of California. The median income for a family in the county was $73039, it is fourth wealthiest county by median family income in California. The per capita income for the county was $30615, it is California's fifth wealthiest county by per capita income.

In 2000, 270131 pupils and students, of which 133506 are male and 136625 are female, 28.47% of the total population, are in the education system. Of which, total enrollment of student are in, 18809 nursery or pri school, 14134 kindergarten, 119161 elementary school, 56052 high school and 61975 College graduate school.

RankCityCountyTotal Area mi2Land Area mi2Water Area mi2PopulationDensity mi2Per capita IncomeHouse hold Income
1Alamo CdpContra Costa County20.5820.57015626759.565705137105
2Antioch CityContra Costa County27.5826.950.63905323359.52215260359
3Bay Point CdpContra Costa County9.299.290215342318.21674344951
4Bayview-montalvin CdpContra Costa County0.820.640.19500478451605650750
5Bethel Island CdpContra Costa County5.145.1402312449.52673944569
6Blackhawk-camino Tassajara CdpContra Costa County9.339.310.02100481078.966972154598
7Brentwood CityContra Costa County11.6611.640.01233022001.22490969198
8Byron CdpContra Costa County2.542.540916360.12123135938
9Clayton CityContra Costa County3.943.940107622729.342048101651
10Clyde CdpContra Costa County0.140.14069449443082266875
11Concord CityContra Costa County30.1430.14012178040412472755597
12Crockett CdpContra Costa County5.035.0303194634.72746948574
13Danville TownContra Costa County18.0918.090417152305.650773114064
14Diablo CdpContra Costa County0.970.9709881016.695419197904
15Discovery Bay CdpContra Costa County9.148.081.0689811111.94131389915
16East Richmond Heights CdpContra Costa County0.570.57033575930.42787357500
17El Cerrito CityContra Costa County3.653.650231716356.53259357253
18El Sobrante CdpContra Costa County3.13.10122603953.12452548272
19Hercules CityContra Costa County18.36.4811.82194883008.22769975196
20Kensington CdpContra Costa County1.151.150.0149364301.95527593247
21Knightsen CdpContra Costa County5.015.010861171.72219158929
22Lafayette CityContra Costa County15.4115.20.21239081572.554319102107
23Martinez CityContra Costa County13.4512.251.2358662927.62970163010
24Moraga TownContra Costa County9.289.270.01162901756.94543798080
25Mountain View CdpContra Costa County0.280.28024688729.12607151986
26Oakley CityContra Costa County12.5212.420.1256192063.22189565589
27Orinda CityContra Costa County12.6212.590.04175991398.265428117637
28Pacheco CdpContra Costa County0.730.73035624878.42606445851
29Pinole CityContra Costa County13.275.28.08190393662.32517062256
30Pittsburg CityContra Costa County16.8215.61.225676936391824150557
31Pleasant Hill CityContra Costa County7.097.090328374633.63307667489
32Port Costa CdpContra Costa County0.680.680232342.13356361429
33Richmond CityContra Costa County52.5829.9822.6992163309.51978844210
34Rodeo CdpContra Costa County7.377.37087171183.32143260522
35Rollingwood CdpContra Costa County0.210.210290014036.31342848229
36San Pablo CityContra Costa County2.582.5803021511726.91430337184
37San Ramon CityContra Costa County11.5911.580.014472238624233695856
38Tara Hills CdpContra Costa County0.780.78053326819.42294656380
39Vine Hill CdpContra Costa County4.674.6703260697.51798548125
40Waldon CdpContra Costa County0.660.66051337755.94109358552
41Walnut Creek CityContra Costa County19.9219.910.01642963229.63987563238
YearPopulation
April 2000 census948816
April 2000 Estimate948817
July 2000 Estimate953304
July 2001 Estimate972016
July 2002 Estimate981420
July 2003 Estimate989171
July 2004 Estimate994844
July 2005 Estimate1002051
July 2006 Estimate1005699
July 2007 Estimate1014687
July 2008 Estimate1029703
SchoolMaleFemaleTotal
Nursery school9619919018809
Kindergarten7378675614134
Elementary school6099158170119161
High school283232772956052
College or graduate school271953478061975
PlaceMedian household incomeMedian family incomePer capita income
Contra Costa County, California$63675$73039$30615
California, United States$47493$53025$22711
United States$41994$50046$21587