Data / Rankings / Housing units / Counties in California

Counties in California by housing units

Los Angeles County had the highest housing units of 58 counties in 2023, at 3.62 million. Alpine County had the lowest, at 1,587. The median was 80,646 and the figure for California was 14.53 million. Source: the U.S. Census Bureau.

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Highest3,624,084Los Angeles County
Lowest1,587Alpine County
Median80,64658 counties
California14,532,683History

Map of counties, 2023

Alameda County: 630,726 countAlpine County: 1,587 countAmador County: 18,919 countButte County: 91,176 countCalaveras County: 27,579 countColusa County: 8,157 countContra Costa County: 426,585 countDel Norte County: 11,156 countEl Dorado County: 94,258 countFresno County: 342,003 countGlenn County: 10,973 countHumboldt County: 62,625 countImperial County: 57,511 countInyo County: 9,500 countKern County: 304,481 countKings County: 46,695 countLake County: 34,271 countLassen County: 12,232 countLos Angeles County: 3,624,084 countMadera County: 50,368 countMarin County: 111,860 countMariposa County: 9,796 countMendocino County: 41,495 countMerced County: 89,610 countModoc County: 4,774 countMono County: 13,632 countMonterey County: 144,659 countNapa County: 55,601 countNevada County: 53,981 countOrange County: 1,138,473 countPlacer County: 176,233 countPlumas County: 15,037 countRiverside County: 860,042 countSacramento County: 593,616 countSan Benito County: 20,937 countSan Bernardino County: 738,535 countSan Diego County: 1,240,607 countSan Francisco County: 411,542 countSan Joaquin County: 256,826 countSan Luis Obispo County: 124,871 countSan Mateo County: 285,558 countSanta Barbara County: 159,766 countSanta Clara County: 694,209 countSanta Cruz County: 106,635 countShasta County: 79,748 countSierra County: 2,099 countSiskiyou County: 23,066 countSolano County: 163,455 countSonoma County: 206,319 countStanislaus County: 184,240 countSutter County: 34,681 countTehama County: 27,456 countTrinity County: 8,122 countTulare County: 152,542 countTuolumne County: 31,491 countVentura County: 294,651 countYolo County: 81,543 countYuba County: 30,089 count
  • Under 10K
  • 10K to 30K
  • 30K to 80K
  • 80K to 160K
  • 160K to 380K
  • 380K and over
count, 2023. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2023

Los Angeles County: 3,624,084 countLos Angeles County3,624,084San Diego County: 1,240,607 countSan Diego County1,240,607Orange County: 1,138,473 countOrange County1,138,473Riverside County: 860,042 countRiverside County860,042San Bernardino County: 738,535 countSan Bernardino County738,535Santa Clara County: 694,209 countSanta Clara County694,209Alameda County: 630,726 countAlameda County630,726Sacramento County: 593,616 countSacramento County593,616Contra Costa County: 426,585 countContra Costa County426,585San Francisco County: 411,542 countSan Francisco County411,542Fresno County: 342,003 countFresno County342,003Kern County: 304,481 countKern County304,481Ventura County: 294,651 countVentura County294,651San Mateo County: 285,558 countSan Mateo County285,558San Joaquin County: 256,826 countSan Joaquin County256,826Sonoma County: 206,319 countSonoma County206,319Stanislaus County: 184,240 countStanislaus County184,240Placer County: 176,233 countPlacer County176,233Solano County: 163,455 countSolano County163,455Santa Barbara County: 159,766 countSanta Barbara County159,766Tulare County: 152,542 countTulare County152,542Monterey County: 144,659 countMonterey County144,659San Luis Obispo County: 124,871 countSan Luis Obispo County124,871Marin County: 111,860 countMarin County111,860Santa Cruz County: 106,635 countSanta Cruz County106,635El Dorado County: 94,258 countEl Dorado County94,258Butte County: 91,176 countButte County91,176Merced County: 89,610 countMerced County89,610Yolo County: 81,543 countYolo County81,543Shasta County: 79,748 countShasta County79,748Humboldt County: 62,625 countHumboldt County62,625Imperial County: 57,511 countImperial County57,511Napa County: 55,601 countNapa County55,601Nevada County: 53,981 countNevada County53,981Madera County: 50,368 countMadera County50,368Kings County: 46,695 countKings County46,695Mendocino County: 41,495 countMendocino County41,495Sutter County: 34,681 countSutter County34,681Lake County: 34,271 countLake County34,271Tuolumne County: 31,491 countTuolumne County31,491Yuba County: 30,089 countYuba County30,089Calaveras County: 27,579 countCalaveras County27,579Tehama County: 27,456 countTehama County27,456Siskiyou County: 23,066 countSiskiyou County23,066San Benito County: 20,937 countSan Benito County20,937Amador County: 18,919 countAmador County18,919Plumas County: 15,037 countPlumas County15,037Mono County: 13,632 countMono County13,632Lassen County: 12,232 countLassen County12,232Del Norte County: 11,156 countDel Norte County11,156Glenn County: 10,973 countGlenn County10,973Mariposa County: 9,796 countMariposa County9,796Inyo County: 9,500 countInyo County9,500Colusa County: 8,157 countColusa County8,157Trinity County: 8,122 countTrinity County8,122Modoc County: 4,774 countModoc County4,774Sierra County: 2,099 countSierra County2,099Alpine County: 1,587 countAlpine County1,587Los Angeles County: 3,624,084 countLos Angeles County3,624,084San Diego County: 1,240,607 countSan Diego County1,240,607Orange County: 1,138,473 countOrange County1,138,473Riverside County: 860,042 countRiverside County860,042San Bernardino County: 738,535 countSan Bernardino County738,535Santa Clara County: 694,209 countSanta Clara County694,209Alameda County: 630,726 countAlameda County630,726Sacramento County: 593,616 countSacramento County593,616Contra Costa County: 426,585 countContra Costa County426,585San Francisco County: 411,542 countSan Francisco County411,542Fresno County: 342,003 countFresno County342,003Kern County: 304,481 countKern County304,481Ventura County: 294,651 countVentura County294,651San Mateo County: 285,558 countSan Mateo County285,558San Joaquin County: 256,826 countSan Joaquin County256,826Sonoma County: 206,319 countSonoma County206,319Stanislaus County: 184,240 countStanislaus County184,240Placer County: 176,233 countPlacer County176,233Solano County: 163,455 countSolano County163,455Santa Barbara County: 159,766 countSanta Barbara County159,766Tulare County: 152,542 countTulare County152,542Monterey County: 144,659 countMonterey County144,659San Luis Obispo County: 124,871 countSan Luis Obispo County124,871Marin County: 111,860 countMarin County111,860Santa Cruz County: 106,635 countSanta Cruz County106,635El Dorado County: 94,258 countEl Dorado County94,258Butte County: 91,176 countButte County91,176Merced County: 89,610 countMerced County89,610Yolo County: 81,543 countYolo County81,543Shasta County: 79,748 countShasta County79,748Humboldt County: 62,625 countHumboldt County62,625Imperial County: 57,511 countImperial County57,511Napa County: 55,601 countNapa County55,601Nevada County: 53,981 countNevada County53,981Madera County: 50,368 countMadera County50,368Kings County: 46,695 countKings County46,695Mendocino County: 41,495 countMendocino County41,495Sutter County: 34,681 countSutter County34,681Lake County: 34,271 countLake County34,271Tuolumne County: 31,491 countTuolumne County31,491Yuba County: 30,089 countYuba County30,089Calaveras County: 27,579 countCalaveras County27,579Tehama County: 27,456 countTehama County27,456Siskiyou County: 23,066 countSiskiyou County23,066San Benito County: 20,937 countSan Benito County20,937Amador County: 18,919 countAmador County18,919Plumas County: 15,037 countPlumas County15,037Mono County: 13,632 countMono County13,632Lassen County: 12,232 countLassen County12,232Del Norte County: 11,156 countDel Norte County11,156Glenn County: 10,973 countGlenn County10,973Mariposa County: 9,796 countMariposa County9,796Inyo County: 9,500 countInyo County9,500Colusa County: 8,157 countColusa County8,157Trinity County: 8,122 countTrinity County8,122Modoc County: 4,774 countModoc County4,774Sierra County: 2,099 countSierra County2,099Alpine County: 1,587 countAlpine County1,587
count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Retrieved 2026-10-12.

Full ranking

RankCounties2023
count		Change on 2022
1Los Angeles County3,624,084+0.7%
2San Diego County1,240,607+0.8%
3Orange County1,138,473+0.7%
4Riverside County860,042+1%
5San Bernardino County738,535+0.7%
6Santa Clara County694,209+0.9%
7Alameda County630,726+1.3%
8Sacramento County593,616+0.8%
9Contra Costa County426,585+0.6%
10San Francisco County411,542+0.8%
11Fresno County342,003+0.8%
12Kern County304,481+0.9%
13Ventura County294,651+0.4%
14San Mateo County285,558+0.5%
15San Joaquin County256,826+1.8%
16Sonoma County206,319+0.5%
17Stanislaus County184,240+0.5%
18Placer County176,233+1.8%
19Solano County163,455+0.6%
20Santa Barbara County159,766+0.6%
21Tulare County152,542+0.9%
22Monterey County144,659+0.6%
23San Luis Obispo County124,871+0.7%
24Marin County111,860+0.2%
25Santa Cruz County106,635+0.2%
26El Dorado County94,258+0.6%
27Butte County91,176-2%
28Merced County89,610+2%
29Yolo County81,543+1.3%
30Shasta County79,748+0.2%
31Humboldt County62,625+0.5%
32Imperial County57,511+1.1%
33Napa County55,6010%
34Nevada County53,981+0.5%
35Madera County50,368+1%
36Kings County46,695+0.4%
37Mendocino County41,495+0.3%
38Sutter County34,681+0.4%
39Lake County34,271-0.1%
40Tuolumne County31,491+0.1%
41Yuba County30,089+1.6%
42Calaveras County27,579+0.2%
43Tehama County27,456+0.1%
44Siskiyou County23,066+0.2%
45San Benito County20,937+2.2%
46Amador County18,919+0.6%
47Plumas County15,037-2.6%
48Mono County13,632+0.1%
49Lassen County12,232-0.3%
50Del Norte County11,156+0.5%
51Glenn County10,973+0.5%
52Mariposa County9,796-0.3%
53Inyo County9,500+0.3%
54Colusa County8,157+0.6%
55Trinity County8,122-1%
56Modoc County4,774-0.2%
57Sierra County2,099+0.3%
58Alpine County1,587-1.9%

Other periods

About this ranking

All housing units, occupied and vacant: houses, apartments, mobile homes and rooms intended as separate living quarters. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

A survey estimate averaged over five years, not a count on one date.

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 B25001: total housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.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 B25001: total housing units (Counties in California by housing units, 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat

MLA 9

American Community Survey 5-year estimates, table B25001: total housing units, Counties in California by housing units, 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat. Invokely, https://invokely.ai/rankings/housing-units/california-counties?period=2023. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25001: total housing units. Counties in California by housing units, 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat. Also distributed by Invokely, https://invokely.ai/rankings/housing-units/california-counties?period=2023.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25001: total housing units, Counties in California by housing units, 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat, via Invokely: https://invokely.ai/rankings/housing-units/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 B25001: total housing units: Counties in California by housing units, 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/housing-units/california-counties?period=2023. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25001: total housing units. https://www2.census.gov/programs-surveys/acs/summary\_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B25001: total housing units: Counties in California by housing units, 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-b25001.dat
L2  - https://invokely.ai/rankings/housing-units/california-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/housing-units/california-counties?period=2023.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25001: total housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b25001.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest housing units?

Los Angeles County, with 3.62 million in 2023, according to the U.S. Census Bureau.

Which county has the lowest housing units?

Alpine County, with 1,587 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 B25001: total housing units. Retrieved 2026-10-12.

Housing units: other rankings

Counties in California: more rankings