Data / Rankings / Households / Counties in California

Counties in California by households

Los Angeles County had the highest households of 58 counties in 2023, at 3.39 million. Alpine County had the lowest, at 473. The median was 73,596 and the figure for California was 13.43 million. Source: the U.S. Census Bureau.

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Highest3,390,254Los Angeles County
Lowest473Alpine County
Median73,59658 counties
California13,434,847History

Map of counties, 2023

Alameda County: 593,117 countAlpine County: 473 countAmador County: 16,066 countButte County: 82,345 countCalaveras County: 17,897 countColusa County: 7,466 countContra Costa County: 411,662 countDel Norte County: 9,621 countEl Dorado County: 75,719 countFresno County: 322,163 countGlenn County: 9,763 countHumboldt County: 54,878 countImperial County: 48,844 countInyo County: 7,923 countKern County: 281,416 countKings County: 43,736 countLake County: 26,364 countLassen County: 9,060 countLos Angeles County: 3,390,254 countMadera County: 44,513 countMarin County: 103,201 countMariposa County: 7,515 countMendocino County: 34,570 countMerced County: 84,605 countModoc County: 3,264 countMono County: 5,521 countMonterey County: 132,046 countNapa County: 49,663 countNevada County: 41,873 countOrange County: 1,074,654 countPlacer County: 155,422 countPlumas County: 8,055 countRiverside County: 762,234 countSacramento County: 568,223 countSan Benito County: 20,188 countSan Bernardino County: 668,004 countSan Diego County: 1,159,822 countSan Francisco County: 362,650 countSan Joaquin County: 241,373 countSan Luis Obispo County: 108,897 countSan Mateo County: 264,424 countSanta Barbara County: 148,960 countSanta Clara County: 654,467 countSanta Cruz County: 96,873 countShasta County: 71,473 countSierra County: 1,206 countSiskiyou County: 18,907 countSolano County: 155,800 countSonoma County: 190,498 countStanislaus County: 176,457 countSutter County: 33,240 countTehama County: 24,526 countTrinity County: 5,373 countTulare County: 142,026 countTuolumne County: 22,809 countVentura County: 278,045 countYolo County: 76,640 countYuba County: 28,063 count
  • Under 10K
  • 10K to 30K
  • 30K to 70K
  • 70K to 150K
  • 150K to 340K
  • 340K and over
count, 2023. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2023

Los Angeles County: 3,390,254 countLos Angeles County3,390,254San Diego County: 1,159,822 countSan Diego County1,159,822Orange County: 1,074,654 countOrange County1,074,654Riverside County: 762,234 countRiverside County762,234San Bernardino County: 668,004 countSan Bernardino County668,004Santa Clara County: 654,467 countSanta Clara County654,467Alameda County: 593,117 countAlameda County593,117Sacramento County: 568,223 countSacramento County568,223Contra Costa County: 411,662 countContra Costa County411,662San Francisco County: 362,650 countSan Francisco County362,650Fresno County: 322,163 countFresno County322,163Kern County: 281,416 countKern County281,416Ventura County: 278,045 countVentura County278,045San Mateo County: 264,424 countSan Mateo County264,424San Joaquin County: 241,373 countSan Joaquin County241,373Sonoma County: 190,498 countSonoma County190,498Stanislaus County: 176,457 countStanislaus County176,457Solano County: 155,800 countSolano County155,800Placer County: 155,422 countPlacer County155,422Santa Barbara County: 148,960 countSanta Barbara County148,960Tulare County: 142,026 countTulare County142,026Monterey County: 132,046 countMonterey County132,046San Luis Obispo County: 108,897 countSan Luis Obispo County108,897Marin County: 103,201 countMarin County103,201Santa Cruz County: 96,873 countSanta Cruz County96,873Merced County: 84,605 countMerced County84,605Butte County: 82,345 countButte County82,345Yolo County: 76,640 countYolo County76,640El Dorado County: 75,719 countEl Dorado County75,719Shasta County: 71,473 countShasta County71,473Humboldt County: 54,878 countHumboldt County54,878Napa County: 49,663 countNapa County49,663Imperial County: 48,844 countImperial County48,844Madera County: 44,513 countMadera County44,513Kings County: 43,736 countKings County43,736Nevada County: 41,873 countNevada County41,873Mendocino County: 34,570 countMendocino County34,570Sutter County: 33,240 countSutter County33,240Yuba County: 28,063 countYuba County28,063Lake County: 26,364 countLake County26,364Tehama County: 24,526 countTehama County24,526Tuolumne County: 22,809 countTuolumne County22,809San Benito County: 20,188 countSan Benito County20,188Siskiyou County: 18,907 countSiskiyou County18,907Calaveras County: 17,897 countCalaveras County17,897Amador County: 16,066 countAmador County16,066Glenn County: 9,763 countGlenn County9,763Del Norte County: 9,621 countDel Norte County9,621Lassen County: 9,060 countLassen County9,060Plumas County: 8,055 countPlumas County8,055Inyo County: 7,923 countInyo County7,923Mariposa County: 7,515 countMariposa County7,515Colusa County: 7,466 countColusa County7,466Mono County: 5,521 countMono County5,521Trinity County: 5,373 countTrinity County5,373Modoc County: 3,264 countModoc County3,264Sierra County: 1,206 countSierra County1,206Alpine County: 473 countAlpine County473Los Angeles County: 3,390,254 countLos Angeles County3,390,254San Diego County: 1,159,822 countSan Diego County1,159,822Orange County: 1,074,654 countOrange County1,074,654Riverside County: 762,234 countRiverside County762,234San Bernardino County: 668,004 countSan Bernardino County668,004Santa Clara County: 654,467 countSanta Clara County654,467Alameda County: 593,117 countAlameda County593,117Sacramento County: 568,223 countSacramento County568,223Contra Costa County: 411,662 countContra Costa County411,662San Francisco County: 362,650 countSan Francisco County362,650Fresno County: 322,163 countFresno County322,163Kern County: 281,416 countKern County281,416Ventura County: 278,045 countVentura County278,045San Mateo County: 264,424 countSan Mateo County264,424San Joaquin County: 241,373 countSan Joaquin County241,373Sonoma County: 190,498 countSonoma County190,498Stanislaus County: 176,457 countStanislaus County176,457Solano County: 155,800 countSolano County155,800Placer County: 155,422 countPlacer County155,422Santa Barbara County: 148,960 countSanta Barbara County148,960Tulare County: 142,026 countTulare County142,026Monterey County: 132,046 countMonterey County132,046San Luis Obispo County: 108,897 countSan Luis Obispo County108,897Marin County: 103,201 countMarin County103,201Santa Cruz County: 96,873 countSanta Cruz County96,873Merced County: 84,605 countMerced County84,605Butte County: 82,345 countButte County82,345Yolo County: 76,640 countYolo County76,640El Dorado County: 75,719 countEl Dorado County75,719Shasta County: 71,473 countShasta County71,473Humboldt County: 54,878 countHumboldt County54,878Napa County: 49,663 countNapa County49,663Imperial County: 48,844 countImperial County48,844Madera County: 44,513 countMadera County44,513Kings County: 43,736 countKings County43,736Nevada County: 41,873 countNevada County41,873Mendocino County: 34,570 countMendocino County34,570Sutter County: 33,240 countSutter County33,240Yuba County: 28,063 countYuba County28,063Lake County: 26,364 countLake County26,364Tehama County: 24,526 countTehama County24,526Tuolumne County: 22,809 countTuolumne County22,809San Benito County: 20,188 countSan Benito County20,188Siskiyou County: 18,907 countSiskiyou County18,907Calaveras County: 17,897 countCalaveras County17,897Amador County: 16,066 countAmador County16,066Glenn County: 9,763 countGlenn County9,763Del Norte County: 9,621 countDel Norte County9,621Lassen County: 9,060 countLassen County9,060Plumas County: 8,055 countPlumas County8,055Inyo County: 7,923 countInyo County7,923Mariposa County: 7,515 countMariposa County7,515Colusa County: 7,466 countColusa County7,466Mono County: 5,521 countMono County5,521Trinity County: 5,373 countTrinity County5,373Modoc County: 3,264 countModoc County3,264Sierra County: 1,206 countSierra County1,206Alpine County: 473 countAlpine County473
count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Retrieved 2026-10-12.

Full ranking

RankCounties2023
count		Change on 2022
1Los Angeles County3,390,254+0.8%
2San Diego County1,159,822+0.9%
3Orange County1,074,654+0.8%
4Riverside County762,234+1.6%
5San Bernardino County668,004+1.2%
6Santa Clara County654,467+0.6%
7Alameda County593,117+1.2%
8Sacramento County568,223+0.8%
9Contra Costa County411,662+0.8%
10San Francisco County362,650+0.5%
11Fresno County322,163+1.2%
12Kern County281,416+1.4%
13Ventura County278,045+0.9%
14San Mateo County264,4240%
15San Joaquin County241,373+1.7%
16Sonoma County190,498+0.4%
17Stanislaus County176,457+0.4%
18Solano County155,800+0.5%
19Placer County155,422+1.9%
20Santa Barbara County148,960+0.6%
21Tulare County142,026+1%
22Monterey County132,046+0.8%
23San Luis Obispo County108,897+0.7%
24Marin County103,201-0.5%
25Santa Cruz County96,873+0.4%
26Merced County84,605+2.2%
27Butte County82,345-1.2%
28Yolo County76,640+0.7%
29El Dorado County75,719+0.7%
30Shasta County71,473+0.5%
31Humboldt County54,878+0.7%
32Napa County49,663+0.9%
33Imperial County48,844+3.9%
34Madera County44,513+1.5%
35Kings County43,736+0.3%
36Nevada County41,873+1.1%
37Mendocino County34,5700%
38Sutter County33,240+0.6%
39Yuba County28,063+1.8%
40Lake County26,364-0.5%
41Tehama County24,526-0.4%
42Tuolumne County22,809-0.1%
43San Benito County20,188+1.7%
44Siskiyou County18,907+0.7%
45Calaveras County17,897+4.1%
46Amador County16,066+2%
47Glenn County9,763+0.2%
48Del Norte County9,621+1%
49Lassen County9,060+1.5%
50Plumas County8,055-0.6%
51Inyo County7,923+0.9%
52Mariposa County7,515-1.1%
53Colusa County7,466+0.5%
54Mono County5,521+0.9%
55Trinity County5,373-2%
56Modoc County3,264-4.1%
57Sierra County1,206+6.3%
58Alpine County473+8.7%

Other periods

About this ranking

Number of households, which equals the number of occupied housing units. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

People living in group quarters, such as college dormitories, nursing homes and prisons, are not in households.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat. Retrieved 2026-10-12.

Citation styles

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APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B25003: occupied housing units (households) (Counties in California by households, 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat

MLA 9

American Community Survey 5-year estimates, table B25003: occupied housing units (households), Counties in California by households, 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat. Invokely, https://invokely.ai/rankings/households/california-counties?period=2023. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25003: occupied housing units (households). Counties in California by households, 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat. Also distributed by Invokely, https://invokely.ai/rankings/households/california-counties?period=2023.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25003: occupied housing units (households), Counties in California by households, 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat, via Invokely: https://invokely.ai/rankings/households/california-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_california_by_2023,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25003: occupied housing units (households): Counties in California by households, 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/households/california-counties?period=2023. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary\_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B25003: occupied housing units (households): Counties in California by households, 2023
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat
L2  - https://invokely.ai/rankings/households/california-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/households/california-counties?period=2023.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25003.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest households?

Los Angeles County, with 3.39 million in 2023, according to the U.S. Census Bureau.

Which county has the lowest households?

Alpine County, with 473 in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Retrieved 2026-10-12.

Households: other rankings

Counties in California: more rankings