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Demographics


Child Population: 2009 See Source and Notes

Region Number
California 9,992,333
Region Number
Alameda County 361,074
Alpine County 226
Amador County 6,485
Butte County 48,097
Calaveras County 8,014
Colusa County 6,475
Contra Costa County 253,468
Del Norte County 6,330
El Dorado County 39,778
Fresno County 278,530
Glenn County 8,078
Humboldt County 27,462
Imperial County 47,800
Inyo County 3,870
Kern County 256,241
Kings County 45,515
Lake County 12,889
Lassen County 6,789
Los Angeles County 2,758,141
Madera County 43,172
Marin County 53,513
Mariposa County 3,020
Mendocino County 20,440
Merced County 81,370
Modoc County 2,103
Mono County 3,001
Monterey County 120,841
Napa County 35,277
Nevada County 18,216
Orange County 800,097
Placer County 84,654
Plumas County 3,857
Riverside County 614,983
Sacramento County 377,245
San Benito County 17,962
San Bernardino County 609,585
San Diego County 807,600
San Francisco County 119,130
San Joaquin County 235,268
San Luis Obispo County 53,526
San Mateo County 162,870
Santa Barbara County 105,127
Santa Clara County 451,611
Santa Cruz County 57,353
Shasta County 42,490
Sierra County 555
Siskiyou County 9,494
Solano County 108,533
Sonoma County 117,990
Stanislaus County 172,366
Sutter County 29,811
Tehama County 15,059
Trinity County 2,787
Tulare County 140,493
Tuolumne County 9,656
Ventura County 214,841
Yolo County 48,195
Yuba County 22,980

Definition: Population under age 18.

Data Source: State of California, DOF Race/Ethnic Population with Age and Sex Detail, 1990-'99, 2000-'50, http://www.dof.ca.gov (Jun. 2009).

Footnote: State and county populations are estimated using population change models benchmarked on official decennial census counts.

Learn More About this Topic

Measures of Demographics on Kidsdata.org

On kidsdata.org, demographic information includes the following:

Child Population (available for all counties)

by Age and Gender
by Race/Ethnicity (data are not comparable before and after 2000, due to racial classification changes)
by City (250,000 Residents or More), as single-year estimates
by City, School District, and County (20,000 Residents or More), as 3-year estimates
by City, School District, and County (10,000 Residents or More), as 5-year estimates
by Legislative District (10,000 Residents or More), as 5-year estimates
by Rural and Urban Areas (State Only)


Overall Public School Enrollment, and by Race/Ethnicity

Birth Rate
Births, by Race/Ethnicity
Total Population

Why This Topic Is Important

Child population trends help project potential needs for education, child care, health care, and other services for children (1). Though the rate of California’s child population growth has slowed since the 1990’s, estimates project a population of approximately 10.3 million kids by 2015, a 3% increase from 2008 (2). Nationwide, the child population is projected to grow from its current 75 million to about 78 million in 2015 (1). Trends also show that by 2050, Latinos/Hispanics will have replaced White, non-Hispanics as the largest racial/ethnic group of children in the U.S. (1). This is already true in California where, as of 2009, Latino/Hispanic children accounted for 49.3% of children under 18 (3). Understanding the demographic composition of the child population provides important insight into the needs of children today and can guide investments that will best support American youth in the future.

For more information about demographics, see kidsdata.org’s Research & Links section.

Sources for this narrative:

  1. Federal Interagency Forum on Child and Family Statistics. (2011). America’s children: Key national indicators of well-being, 2011. Retrieved from: http://www.childstats.gov/americaschildren/demo.asp
  2. Public Policy Institute of California (PPIC). (2011). California population: Planning for a better future. Retrieved from: http://www.ppic.org/main/publication.asp?i=900.
  3. Kidsdata.org. (2012). Demographics: Child population, by race/ethnicity: 2009. Retrieved from: http://www.kidsdata.org/data/topic/table/child-population-race.aspx

How Children Are Faring

In California and most counties, the overall population -- as well as the estimated child population and total number of K-12 children enrolled in public school -- increased between 1995 and 2009. Children ages 0-17 comprise 26% of the state's population. More than one-fourth (28%) of California's 9.9 million children live in Los Angeles County. San Diego and Orange counties are the next most populous counties. Most children (92%) live in urban areas of the state, and 8% live in rural areas, according to 2005-2009 data.

Statewide, no racial/ethnic group constitutes a majority of the child population. In 2009, 49.3% of the state's children were Latino/Hispanic (up from 43.8% in 2000), and 30.6% were Caucasian/White, a decrease from 35.5% in 2000. One in ten (10.2%) California children were Asian or Pacific Islander in 2009; 5.8% were African American/Black; 3.7% were multiracial; and 0.5% were Native American/American Indian.

Research and Links

Websites with Related Information

Key Reports

County/Regional Reports