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U.S. Census Bureau · 2025 Population Estimates Program (PEP)

California County Population — 2025 PEP

July 1, 2025 resident population estimates for 58 counties. State total (sum of these county estimates): 39,355,309 persons.

Separate 2025 TIGER/Line county boundaries validate county identity; these are not ACS 2024 survey estimates.

Source and downloads

2025 Census PEP county estimates, 2020–2025 series; counts are persons, migration counts are persons, published rates are per 1,000, and unavailable values remain null (not zero). 2020 rates are unavailable for the partial-year interval. County totals and characteristics are verified against the pinned raw Census CSV receipts and independent 2025 county geometry.

Official Census PEP county source · Download JSON · Download CSV · Download source metadata

Official state totals and county summaries

Official NST July 1, 2025 state total: 39,355,309 persons (SUMLEV 040, PEP Vintage 2025). County sum: 39,355,309 persons; comparison status: equal.

Official NST July 2020: 39,527,808 persons; July 2020–July 2025 change: -172,499 persons; growth: -0.436399 percent (denominator: official July 2020 population).

County July 2024–July 2025: Growing: 28 · Shrinking: 30 · Unchanged: 0 · Missing: 0. Median county growth: -0.074828 percent.

Largest county: Los Angeles County (GEOID 06037): 9694934 persons.

Fastest county growth: Placer County (GEOID 06061): 1.796541 percent.

Greatest numeric increase: Riverside County (GEOID 06065): 15804 persons.

no minimum population; missing excluded per measure; median of county percentages, not population weighted; equal values use ascending full GEOID.

Official state demographics

Resident population · SUMLEV 040 · July 1, 2025 · Census PEP Vintage 2025. Denominator for every share: 39,355,309 resident persons. Six exclusive race groups; Hispanic origin overlaps race and must not be added to it. Release: June 2026; exact day unproved; PEP estimates have no ACS sampling MOE.

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Official state age, sex, race and overlapping Hispanic origin
MeasureCountShare
Female19,936,076 persons50.656637 percent
Male19,419,233 persons49.343363 percent
Ages 18–243,684,287 persons9.361601 percent
Ages 25–4411,214,620 persons28.495825 percent
Ages 45–649,380,436 persons23.835249 percent
Ages 65 and older6,901,168 persons17.535545 percent
Under 188,174,798 persons20.771779 percent
American Indian or Alaska Native alone1,681,962 persons4.273787 percent
Asian alone6,893,671 persons17.516496 percent
Black or African American alone2,535,825 persons6.443413 percent
Native Hawaiian or other Pacific Islander alone218,201 persons0.554439 percent
Two or more races2,600,504 persons6.607759 percent
White alone25,425,146 persons64.604107 percent
Hispanic (any race)16,205,852 persons41.178312 percent
Not Hispanic23,149,457 persons58.821688 percent

Official state median age: 38.7 years. Published state SYASEX median age; not a county aggregation, not ACS.

Download all state demographic observations (CSV)

Revised April 1, 2020 estimates base (official NST): 39,555,703 persons; county base sum: 39,555,703 persons; comparison: equal. This is not the original decennial census count.

Original April 1, 2020 Census count: 58 compatible counties; 0 unavailable. Published Census county centers-of-population POPULATION, original 2020 Gazetteer and official 2020–2025 geographic-change evidence; no boundary allocation. Original count, revised April estimates base and July 2020 estimate are separate observations. Documentation: November 2021; exact file release day unproved; retrieval is not release. Official original count source. Original 2020 Gazetteer identity plus Census geographic-change notes 2014–2025; no county-level change recorded from 2020 onward, exact full modern name, and original count required. Any recorded county-level change or referenced counterparty is conservatively unavailable, including unresolved internal redistricting. Same GEOID alone is insufficient. Not a claim of identical cartographic coordinates; no invented allocations.

Source release date unavailable: retained pins do not attest an official release date; retrieval is not release. Reference dates and Vintage 2025 are explicit; no current-vintage refresh is implied.

County population and demographic explorer

Choose a measure, observation year and county without downloading boundaries. Rankings, search, trends and CSV work without a map. Load map explicitly to download the full, unsimplified 2025 TIGER boundaries; this defers rather than removes their payload. The table remains available without JavaScript.

PEP population · persons · July 1, 2025. Denominator: none. Calculation/source: CO POPESTIMATEy. Vintage 2025; null with metric_status reason; measured zero remains zero; no imputation.

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After loading, Tab to a county and press Enter or Space; colors and the legend indicate signed direction and magnitude. Outlines show selection. The county picker works before and after map loading.

Selected county demographic breakdown

July 1, 2025 · Los Angeles County (GEOID 06037). Same-period county population is the share denominator. Hispanic origin overlaps race; do not add origin to race counts. Other overlapping classifications are not additive. Official county median age is from PEP AGESEX MEDIAN_AGE_TOT, not ACS.

County demographics: counts, shares and official median age
Classification / sourceCount or statisticShare / status
Sex · PEP male4,739,860 persons48.890070 percent
Sex · PEP female4,955,074 persons51.109930 percent
Age bands · PEP under181,862,112 persons19.207062 percent
Age bands · PEP age18 24871,989 persons8.994275 percent
Age bands · PEP age25 442,899,209 persons29.904371 percent
Age bands · PEP age45 642,408,589 persons24.843790 percent
Age bands · PEP age65plus1,653,035 persons17.050503 percent
Race alone (partition) · PEP white alone6,102,862 persons62.948979 percent
Race alone (partition) · PEP black alone862,733 persons8.898802 percent
Race alone (partition) · PEP aian alone508,422 persons5.244203 percent
Race alone (partition) · PEP asian alone1,613,765 persons16.645446 percent
Race alone (partition) · PEP nhpi alone40,964 persons0.422530 percent
Race alone (partition) · PEP two or more566,188 persons5.840040 percent
Hispanic origin (overlaps race) · PEP hispanic any race4,776,046 persons49.263316 percent
Hispanic origin (overlaps race) · PEP not hispanic4,918,888 persons50.736684 percent
Other overlapping classifications (not additive) · PEP white alone or combination6,610,438 persons68.184456 percent
Other overlapping classifications (not additive) · PEP not hispanic white alone2,383,152 persons24.581415 percent
Official county median age · AGESEX MEDIAN_AGE_TOT39.1 yearsNot a share; not ACS or an average of county medians

Use Ctrl/Command or Shift to select multiple counties. The following trend uses exact resident persons, not percentages; county size affects the scale. Missing observations break lines; the revised April estimates base is a separate dashed partial interval.

2025 county population rankings

All 58 county estimates are present without JavaScript, ranked by 2025 population (largest first). Signed changes compare July 1, 2024 to July 1, 2025. Unavailable is not zero; equal values break ties by GEOID (ascending).

Showing all 58 counties; ranked by 2025 population, descending.

California County Population — 2025 PEP — July 1, 2025; rank reflects the selected ordering
RankCountyGEOIDPopulation (persons)Signed change (persons)Signed change (percent)
1Los Angeles County060379,694,934-53934 persons-0.553233%
2San Diego County060733,282,248-5294 persons-0.161032%
3Orange County060593,149,507-8520 persons-0.269789%
4Riverside County060652,544,916+15804 persons+0.624883%
5San Bernardino County060712,224,091+5327 persons+0.240089%
6Santa Clara County060851,914,391+6481 persons+0.339691%
7Alameda County060011,636,630+6 persons+0.000367%
8Sacramento County060671,618,460+8563 persons+0.531897%
9Contra Costa County060131,170,070+536 persons+0.045830%
10Fresno County060191,035,456+1758 persons+0.170069%
11Kern County06029927,068+2420 persons+0.261721%
12Ventura County06111830,851-2580 persons-0.309564%
13San Francisco County06075826,079+5134 persons+0.625377%
14San Joaquin County06077823,815+6666 persons+0.815763%
15San Mateo County06081743,568+2941 persons+0.397096%
16Stanislaus County06099557,719+347 persons+0.062256%
17Sonoma County06097486,444+1081 persons+0.222720%
18Tulare County06107485,146+1295 persons+0.267644%
19Solano County06095455,376+300 persons+0.065923%
20Placer County06061442,081+7802 persons+1.796541%
21Santa Barbara County06083442,065-1016 persons-0.229303%
22Monterey County06053433,729+282 persons+0.065060%
23Merced County06047297,260+453 persons+0.152624%
24San Luis Obispo County06079282,367+214 persons+0.075845%
25Santa Cruz County06087258,852-2565 persons-0.981191%
26Marin County06041253,694-2010 persons-0.786065%
27Yolo County06113224,410+1150 persons+0.515095%
28Butte County06007209,211+625 persons+0.299637%
29El Dorado County06017192,323-48 persons-0.024952%
30Shasta County06089181,648+256 persons+0.141131%
31Imperial County06025181,411-1360 persons-0.744101%
32Madera County06039167,927+1795 persons+1.080466%
33Kings County06031154,327+208 persons+0.134961%
34Napa County06055132,949-166 persons-0.124704%
35Humboldt County06023131,647-677 persons-0.511623%
36Nevada County06057101,911-235 persons-0.230063%
37Sutter County0610198,787-146 persons-0.147575%
38Yuba County0611588,691+1250 persons+1.429535%
39Mendocino County0604588,122-817 persons-0.918607%
40San Benito County0606970,082+997 persons+1.443150%
41Lake County0603367,772-108 persons-0.159104%
42Tehama County0610364,665-102 persons-0.157488%
43Tuolumne County0610953,160-1025 persons-1.891667%
44Calaveras County0600946,605+109 persons+0.234429%
45Siskiyou County0609342,013-477 persons-1.122617%
46Amador County0600541,876-98 persons-0.233478%
47Glenn County0602128,141-179 persons-0.632062%
48Lassen County0603528,117-476 persons-1.664743%
49Del Norte County0601526,410-549 persons-2.036426%
50Colusa County0601121,836-180 persons-0.817587%
51Plumas County0606318,583-190 persons-1.012092%
52Inyo County0602718,158-144 persons-0.786799%
53Mariposa County0604316,918-30 persons-0.177012%
54Trinity County0610515,720+23 persons+0.146525%
55Mono County0605112,505-187 persons-1.473369%
56Modoc County060498,426-109 persons-1.277094%
57Sierra County060913,098-23 persons-0.736943%
58Alpine County060031,043-43 persons-3.959484%

County population trend · 2020–2025

Resident population (persons), not ACS housing. April 1, 2020 estimates base is distinct from the July 1, 2020 estimate. The April–July 2020 change is partial-year; the July 2020–July 2021 interval is the first July-to-July comparison. No 2020 annual rate is shown. Missing observations are unavailable, never zero.

Showing Los Angeles County (GEOID 06037). Select a county on the map or in the rankings table to update this trend.

Horizontal axis: year (2020–2025); vertical axis: resident population (persons). The 2020 base is a separate April 1 observation; July 1 estimates run from 2020 through 2025. Focus the chart viewport and use Left/Right arrows to scroll on narrow screens. Complete axis labels stay here outside the scrolling chart; the table gives exact values and availability.

Population observations for Los Angeles County (GEOID 06037), persons
DatePopulation (persons)Interval
April 1, 2020 base10,017,414Estimates base; not July 1
July 1, 20209,996,510April–July partial-year; no annual rate
July 1, 20219,810,478July 2020–July 2021 comparison
July 1, 20229,748,524July-to-July estimate
July 1, 20239,732,568July-to-July estimate
July 1, 20249,748,868July-to-July estimate
July 1, 20259,694,934July-to-July estimate

County population and median home value · different vintages

Each point pairs a county’s PEP July 1, 2025 resident population (persons) with its ACS 2024 5-year median owner-occupied home value (B25077, U.S. dollars). These are different reference periods and different statistical programs. This descriptive comparison does not imply causality or matched vintages. Suppressed, missing or invalid ACS estimates are unavailable, not zero and not plotted. A valid zero remains zero.

The exact-value table below works without JavaScript; chart loading requires JavaScript.

Select a county using the map or rankings to coordinate the comparison.

County comparison: PEP July 1, 2025 population (persons) and ACS 2024 5-year median owner-occupied home value (U.S. dollars); unavailable values identified
CountyGEOIDPEP July 1, 2025 population (persons)ACS 2024 5-year median home value (U.S. dollars)
Alameda County060011,636,630$1,090,100
Alpine County060031,043$590,200
Amador County0600541,876$449,800
Butte County06007209,211$424,700
Calaveras County0600946,605$457,200
Colusa County0601121,836$393,400
Contra Costa County060131,170,070$866,800
Del Norte County0601526,410$342,000
El Dorado County06017192,323$679,900
Fresno County060191,035,456$388,800
Glenn County0602128,141$352,400
Humboldt County06023131,647$446,900
Imperial County06025181,411$309,600
Inyo County0602718,158$348,700
Kern County06029927,068$338,300
Kings County06031154,327$324,300
Lake County0603367,772$324,300
Lassen County0603528,117$265,300
Los Angeles County060379,694,934$834,200
Madera County06039167,927$393,200
Marin County06041253,694$1,507,300
Mariposa County0604316,918$387,900
Mendocino County0604588,122$512,200
Merced County06047297,260$391,800
Modoc County060498,426$224,700
Mono County0605112,505$639,400
Monterey County06053433,729$781,000
Napa County06055132,949$869,500
Nevada County06057101,911$621,800
Orange County060593,149,507$962,600
Placer County06061442,081$688,100
Plumas County0606318,583$360,200
Riverside County060652,544,916$557,300
Sacramento County060671,618,460$534,200
San Benito County0606970,082$793,400
San Bernardino County060712,224,091$505,000
San Diego County060733,282,248$854,700
San Francisco County06075826,079$1,394,500
San Joaquin County06077823,815$530,700
San Luis Obispo County06079282,367$824,700
San Mateo County06081743,568$1,559,600
Santa Barbara County06083442,065$790,700
Santa Clara County060851,914,391$1,490,600
Santa Cruz County06087258,852$1,027,500
Shasta County06089181,648$366,400
Sierra County060913,098$331,900
Siskiyou County0609342,013$309,500
Solano County06095455,376$617,700
Sonoma County06097486,444$815,500
Stanislaus County06099557,719$450,100
Sutter County0610198,787$433,500
Tehama County0610364,665$339,600
Trinity County0610515,720$325,800
Tulare County06107485,146$330,100
Tuolumne County0610953,160$433,200
Ventura County06111830,851$822,700
Yolo County06113224,410$620,700
Yuba County0611588,691$412,300