Data / Rankings / Households / Counties in California

Counties in California by households, 2024

Los Angeles County had the highest households of 58 counties in 2024, at 3.42 million. Alpine County had the lowest, at 435. The median was 73,709 and the figure for California was 13.55 million. Source: the U.S. Census Bureau.

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Highest3,416,449Los Angeles County
Lowest435Alpine County
Median73,70958 counties
California13,548,091History

Map of counties, 2024

Alameda County: 598,246 countAlpine County: 435 countAmador County: 16,091 countButte County: 83,312 countCalaveras County: 18,437 countColusa County: 7,512 countContra Costa County: 414,417 countDel Norte County: 9,522 countEl Dorado County: 76,185 countFresno County: 324,702 countGlenn County: 9,810 countHumboldt County: 54,922 countImperial County: 49,644 countInyo County: 8,040 countKern County: 284,931 countKings County: 44,052 countLake County: 26,940 countLassen County: 9,247 countLos Angeles County: 3,416,449 countMadera County: 45,379 countMarin County: 103,018 countMariposa County: 7,508 countMendocino County: 34,842 countMerced County: 86,055 countModoc County: 3,267 countMono County: 5,744 countMonterey County: 132,489 countNapa County: 49,763 countNevada County: 42,865 countOrange County: 1,082,960 countPlacer County: 157,954 countPlumas County: 8,054 countRiverside County: 775,335 countSacramento County: 571,057 countSan Benito County: 20,561 countSan Bernardino County: 674,915 countSan Diego County: 1,171,278 countSan Francisco County: 363,970 countSan Joaquin County: 245,250 countSan Luis Obispo County: 109,503 countSan Mateo County: 264,419 countSanta Barbara County: 149,608 countSanta Clara County: 659,353 countSanta Cruz County: 96,898 countShasta County: 71,232 countSierra County: 1,219 countSiskiyou County: 19,079 countSolano County: 157,512 countSonoma County: 190,998 countStanislaus County: 177,874 countSutter County: 33,292 countTehama County: 24,788 countTrinity County: 5,585 countTulare County: 143,195 countTuolumne County: 22,690 countVentura County: 280,360 countYolo County: 76,693 countYuba County: 28,635 count
  • Under 10K
  • 10K to 30K
  • 30K to 70K
  • 70K to 150K
  • 150K to 340K
  • 340K and over
count, 2024. 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, 2024

Los Angeles County: 3,416,449 countLos Angeles County3,416,449San Diego County: 1,171,278 countSan Diego County1,171,278Orange County: 1,082,960 countOrange County1,082,960Riverside County: 775,335 countRiverside County775,335San Bernardino County: 674,915 countSan Bernardino County674,915Santa Clara County: 659,353 countSanta Clara County659,353Alameda County: 598,246 countAlameda County598,246Sacramento County: 571,057 countSacramento County571,057Contra Costa County: 414,417 countContra Costa County414,417San Francisco County: 363,970 countSan Francisco County363,970Fresno County: 324,702 countFresno County324,702Kern County: 284,931 countKern County284,931Ventura County: 280,360 countVentura County280,360San Mateo County: 264,419 countSan Mateo County264,419San Joaquin County: 245,250 countSan Joaquin County245,250Sonoma County: 190,998 countSonoma County190,998Stanislaus County: 177,874 countStanislaus County177,874Placer County: 157,954 countPlacer County157,954Solano County: 157,512 countSolano County157,512Santa Barbara County: 149,608 countSanta Barbara County149,608Tulare County: 143,195 countTulare County143,195Monterey County: 132,489 countMonterey County132,489San Luis Obispo County: 109,503 countSan Luis Obispo County109,503Marin County: 103,018 countMarin County103,018Santa Cruz County: 96,898 countSanta Cruz County96,898Merced County: 86,055 countMerced County86,055Butte County: 83,312 countButte County83,312Yolo County: 76,693 countYolo County76,693El Dorado County: 76,185 countEl Dorado County76,185Shasta County: 71,232 countShasta County71,232Humboldt County: 54,922 countHumboldt County54,922Napa County: 49,763 countNapa County49,763Imperial County: 49,644 countImperial County49,644Madera County: 45,379 countMadera County45,379Kings County: 44,052 countKings County44,052Nevada County: 42,865 countNevada County42,865Mendocino County: 34,842 countMendocino County34,842Sutter County: 33,292 countSutter County33,292Yuba County: 28,635 countYuba County28,635Lake County: 26,940 countLake County26,940Tehama County: 24,788 countTehama County24,788Tuolumne County: 22,690 countTuolumne County22,690San Benito County: 20,561 countSan Benito County20,561Siskiyou County: 19,079 countSiskiyou County19,079Calaveras County: 18,437 countCalaveras County18,437Amador County: 16,091 countAmador County16,091Glenn County: 9,810 countGlenn County9,810Del Norte County: 9,522 countDel Norte County9,522Lassen County: 9,247 countLassen County9,247Plumas County: 8,054 countPlumas County8,054Inyo County: 8,040 countInyo County8,040Colusa County: 7,512 countColusa County7,512Mariposa County: 7,508 countMariposa County7,508Mono County: 5,744 countMono County5,744Trinity County: 5,585 countTrinity County5,585Modoc County: 3,267 countModoc County3,267Sierra County: 1,219 countSierra County1,219Alpine County: 435 countAlpine County435Los Angeles County: 3,416,449 countLos Angeles County3,416,449San Diego County: 1,171,278 countSan Diego County1,171,278Orange County: 1,082,960 countOrange County1,082,960Riverside County: 775,335 countRiverside County775,335San Bernardino County: 674,915 countSan Bernardino County674,915Santa Clara County: 659,353 countSanta Clara County659,353Alameda County: 598,246 countAlameda County598,246Sacramento County: 571,057 countSacramento County571,057Contra Costa County: 414,417 countContra Costa County414,417San Francisco County: 363,970 countSan Francisco County363,970Fresno County: 324,702 countFresno County324,702Kern County: 284,931 countKern County284,931Ventura County: 280,360 countVentura County280,360San Mateo County: 264,419 countSan Mateo County264,419San Joaquin County: 245,250 countSan Joaquin County245,250Sonoma County: 190,998 countSonoma County190,998Stanislaus County: 177,874 countStanislaus County177,874Placer County: 157,954 countPlacer County157,954Solano County: 157,512 countSolano County157,512Santa Barbara County: 149,608 countSanta Barbara County149,608Tulare County: 143,195 countTulare County143,195Monterey County: 132,489 countMonterey County132,489San Luis Obispo County: 109,503 countSan Luis Obispo County109,503Marin County: 103,018 countMarin County103,018Santa Cruz County: 96,898 countSanta Cruz County96,898Merced County: 86,055 countMerced County86,055Butte County: 83,312 countButte County83,312Yolo County: 76,693 countYolo County76,693El Dorado County: 76,185 countEl Dorado County76,185Shasta County: 71,232 countShasta County71,232Humboldt County: 54,922 countHumboldt County54,922Napa County: 49,763 countNapa County49,763Imperial County: 49,644 countImperial County49,644Madera County: 45,379 countMadera County45,379Kings County: 44,052 countKings County44,052Nevada County: 42,865 countNevada County42,865Mendocino County: 34,842 countMendocino County34,842Sutter County: 33,292 countSutter County33,292Yuba County: 28,635 countYuba County28,635Lake County: 26,940 countLake County26,940Tehama County: 24,788 countTehama County24,788Tuolumne County: 22,690 countTuolumne County22,690San Benito County: 20,561 countSan Benito County20,561Siskiyou County: 19,079 countSiskiyou County19,079Calaveras County: 18,437 countCalaveras County18,437Amador County: 16,091 countAmador County16,091Glenn County: 9,810 countGlenn County9,810Del Norte County: 9,522 countDel Norte County9,522Lassen County: 9,247 countLassen County9,247Plumas County: 8,054 countPlumas County8,054Inyo County: 8,040 countInyo County8,040Colusa County: 7,512 countColusa County7,512Mariposa County: 7,508 countMariposa County7,508Mono County: 5,744 countMono County5,744Trinity County: 5,585 countTrinity County5,585Modoc County: 3,267 countModoc County3,267Sierra County: 1,219 countSierra County1,219Alpine County: 435 countAlpine County435
count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Retrieved 2026-10-12.

Full ranking

RankCounties2024
count		Change on 2023
1Los Angeles County3,416,449+0.8%
2San Diego County1,171,278+1%
3Orange County1,082,960+0.8%
4Riverside County775,335+1.7%
5San Bernardino County674,915+1%
6Santa Clara County659,353+0.7%
7Alameda County598,246+0.9%
8Sacramento County571,057+0.5%
9Contra Costa County414,417+0.7%
10San Francisco County363,970+0.4%
11Fresno County324,702+0.8%
12Kern County284,931+1.2%
13Ventura County280,360+0.8%
14San Mateo County264,419-0%
15San Joaquin County245,250+1.6%
16Sonoma County190,998+0.3%
17Stanislaus County177,874+0.8%
18Placer County157,954+1.6%
19Solano County157,512+1.1%
20Santa Barbara County149,608+0.4%
21Tulare County143,195+0.8%
22Monterey County132,489+0.3%
23San Luis Obispo County109,503+0.6%
24Marin County103,018-0.2%
25Santa Cruz County96,8980%
26Merced County86,055+1.7%
27Butte County83,312+1.2%
28Yolo County76,693+0.1%
29El Dorado County76,185+0.6%
30Shasta County71,232-0.3%
31Humboldt County54,922+0.1%
32Napa County49,763+0.2%
33Imperial County49,644+1.6%
34Madera County45,379+1.9%
35Kings County44,052+0.7%
36Nevada County42,865+2.4%
37Mendocino County34,842+0.8%
38Sutter County33,292+0.2%
39Yuba County28,635+2%
40Lake County26,940+2.2%
41Tehama County24,788+1.1%
42Tuolumne County22,690-0.5%
43San Benito County20,561+1.8%
44Siskiyou County19,079+0.9%
45Calaveras County18,437+3%
46Amador County16,091+0.2%
47Glenn County9,810+0.5%
48Del Norte County9,522-1%
49Lassen County9,247+2.1%
50Plumas County8,054-0%
51Inyo County8,040+1.5%
52Colusa County7,512+0.6%
53Mariposa County7,508-0.1%
54Mono County5,744+4%
55Trinity County5,585+3.9%
56Modoc County3,267+0.1%
57Sierra County1,219+1.1%
58Alpine County435-8%

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/2024/table-based-SF/data/5YRData/acsdt5y2024-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, 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat

MLA 9

American Community Survey 5-year estimates, table B25003: occupied housing units (households), Counties in California by households, 2024. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat. Invokely, https://invokely.ai/rankings/households/california-counties. 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, 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat. Also distributed by Invokely, https://invokely.ai/rankings/households/california-counties.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25003: occupied housing units (households), Counties in California by households, 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat, via Invokely: https://invokely.ai/rankings/households/california-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_california_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25003: occupied housing units (households): Counties in California by households, 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/households/california-counties. 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/2024/table-based-SF/data/5YRData/acsdt5y2024-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, 2024
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat
L2  - https://invokely.ai/rankings/households/california-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/households/california-counties.
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/2024/table-based-SF/data/5YRData/acsdt5y2024-b25003.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest households?

Los Angeles County, with 3.42 million in 2024, according to the U.S. Census Bureau.

Which county has the lowest households?

Alpine County, with 435 in 2024.

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