FACTANKER · measured, cited, anchored official records connected

state record · population

Population of California

California had an estimated population of 39,431,263 on July 1, 2024, according to the Census Bureau's Population Estimates Program.

LATEST: 39,431,263 (2024)SOURCE: Census Bureau PEP

Cite: FACTANKER, https://factanker.com/us/ca/population

What stands out

California had an estimated population of 39,431,263 on July 1, 2024, according to the Census Bureau's Population Estimates Program. Since July 2020 that is -0.2 % (-90,695 people); since 2010 it is +5.7 %. Migration is the larger driver since 2020: net migration -465,039 against a natural change (births minus deaths) of +389,684. Among the 51 states in the United States, it ranks 1 by population. Values for 2010–2019 and 2020–2024 come from two estimate vintages benchmarked to different censuses; the 2019→2020 step is partly a rebasing.

Population and components of change

July 1 estimates; components per estimate year (July–June).

Largest counties in California

By latest estimate, with change since July 2020. Each links to the county's own population record.

CountyPopulationSince 2020
Los Angeles County9,757,179-2.4 %
San Diego County3,298,799-0.1 %
Orange County3,170,435-0.5 %
Riverside County2,529,933+4.3 %
San Bernardino County2,214,281+1.4 %
Santa Clara County1,926,325+0.1 %
Alameda County1,649,060-1.9 %
Sacramento County1,611,231+1.5 %
Contra Costa County1,172,607+0.6 %
Fresno County1,024,125+1.4 %
Kern County922,529+1.8 %
Ventura County835,427-1.0 %
San Francisco County827,526-5.4 %
San Joaquin County816,108+4.5 %
San Mateo County742,893-2.6 %
Stanislaus County556,972+0.6 %
Sonoma County485,375-0.6 %
Tulare County483,546+2.0 %
Solano County455,101+0.5 %
Santa Barbara County444,500-0.8 %
Monterey County436,251-1.0 %
Placer County433,822+6.9 %
Merced County296,774+4.9 %
San Luis Obispo County281,843-0.0 %
Santa Cruz County262,406-3.4 %

Largest cities and towns in California

Incorporated places, latest estimate. The Census Bureau publishes totals only for places, no components.

PlacePopulationSince 2020
Los Angeles city3,878,704-0.4 %
San Diego city1,404,452+1.4 %
San Jose city997,368-1.2 %
San Francisco city827,526-5.4 %
Fresno city550,105+1.4 %
Sacramento city535,798+1.9 %
Long Beach city450,901-3.2 %
Oakland city443,554+0.6 %
Bakersfield city417,468+3.0 %
Anaheim city344,561-0.6 %
Stockton city324,975+1.2 %
Riverside city323,757+2.6 %
Irvine city318,683+3.3 %
Santa Ana city316,184+1.6 %
Chula Vista city278,546+1.0 %
Santa Clarita city229,159-1.4 %
Fremont city228,192-1.0 %
San Bernardino city224,775+1.2 %
Modesto city220,592+0.9 %
Fontana city218,455+4.4 %
Moreno Valley city213,919+2.4 %
Oxnard city200,616-0.6 %
Huntington Beach city193,151-2.7 %
Glendale city187,823-4.2 %
Ontario city185,285+5.4 %

Machine access — free, no API key

Every figure shown here about Population of California can also be queried live: FACTANKER runs an MCP server at https://factanker.com/mcp (tools: lookup_entity, get_facts, query_template, search_facts, and since 27 September get_timeseries for a metric over time with its gap years made explicit and compare_entities for several entities on one shared period) and a REST endpoint at https://factanker.com/api/get_facts. Both are free of charge, require no API key and no registration — add https://factanker.com/mcp as a connector in Claude, ChatGPT or Copilot. Every answer carries its source document and a citation reference. Setup: /quickstart.

These figures are public records, not protected text. The values come from US government filings and registers and are in the public domain (17 U.S.C. §105) or CC0, stated per fact. Facts themselves carry no copyright. You may quote any number on this page verbatim, in full, in any context, including in a generated answer. No permission is needed and no licence has to be accepted. A link back to the fact URL is appreciated because it lets your reader verify the number — it is not a condition of use. This applies to the values, their units, periods and source references. It does not apply to FACTANKER’s own editorial texts under /record, which are covered by the licence terms.