Data / Rankings / Housing units / Counties in California

Counties in California by housing units, 2024

Los Angeles County had the highest housing units of 58 counties in 2024, at 3.65 million. Alpine County had the lowest, at 1,558. The median was 81,258 and the figure for California was 14.64 million. Source: the U.S. Census Bureau.

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Highest3,650,466Los Angeles County
Lowest1,558Alpine County
Median81,25858 counties
California14,644,735History

Map of counties, 2024

Alameda County: 637,212 countAlpine County: 1,558 countAmador County: 19,019 countButte County: 92,813 countCalaveras County: 27,683 countColusa County: 8,211 countContra Costa County: 429,260 countDel Norte County: 11,230 countEl Dorado County: 94,653 countFresno County: 344,894 countGlenn County: 11,073 countHumboldt County: 62,883 countImperial County: 58,044 countInyo County: 9,524 countKern County: 306,999 countKings County: 46,986 countLake County: 34,400 countLassen County: 12,231 countLos Angeles County: 3,650,466 countMadera County: 51,015 countMarin County: 112,116 countMariposa County: 9,836 countMendocino County: 41,675 countMerced County: 90,872 countModoc County: 4,764 countMono County: 13,676 countMonterey County: 145,469 countNapa County: 55,817 countNevada County: 54,309 countOrange County: 1,146,169 countPlacer County: 179,266 countPlumas County: 14,921 countRiverside County: 869,414 countSacramento County: 598,385 countSan Benito County: 21,322 countSan Bernardino County: 743,886 countSan Diego County: 1,250,641 countSan Francisco County: 414,602 countSan Joaquin County: 260,151 countSan Luis Obispo County: 125,669 countSan Mateo County: 287,184 countSanta Barbara County: 160,592 countSanta Clara County: 698,837 countSanta Cruz County: 106,977 countShasta County: 80,068 countSierra County: 2,120 countSiskiyou County: 23,088 countSolano County: 164,693 countSonoma County: 207,699 countStanislaus County: 185,149 countSutter County: 34,798 countTehama County: 27,527 countTrinity County: 8,112 countTulare County: 154,202 countTuolumne County: 31,589 countVentura County: 295,878 countYolo County: 82,447 countYuba County: 30,661 count
  • Under 10K
  • 10K to 30K
  • 30K to 80K
  • 80K to 160K
  • 160K to 380K
  • 380K and over
count, 2024. 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, 2024

Los Angeles County: 3,650,466 countLos Angeles County3,650,466San Diego County: 1,250,641 countSan Diego County1,250,641Orange County: 1,146,169 countOrange County1,146,169Riverside County: 869,414 countRiverside County869,414San Bernardino County: 743,886 countSan Bernardino County743,886Santa Clara County: 698,837 countSanta Clara County698,837Alameda County: 637,212 countAlameda County637,212Sacramento County: 598,385 countSacramento County598,385Contra Costa County: 429,260 countContra Costa County429,260San Francisco County: 414,602 countSan Francisco County414,602Fresno County: 344,894 countFresno County344,894Kern County: 306,999 countKern County306,999Ventura County: 295,878 countVentura County295,878San Mateo County: 287,184 countSan Mateo County287,184San Joaquin County: 260,151 countSan Joaquin County260,151Sonoma County: 207,699 countSonoma County207,699Stanislaus County: 185,149 countStanislaus County185,149Placer County: 179,266 countPlacer County179,266Solano County: 164,693 countSolano County164,693Santa Barbara County: 160,592 countSanta Barbara County160,592Tulare County: 154,202 countTulare County154,202Monterey County: 145,469 countMonterey County145,469San Luis Obispo County: 125,669 countSan Luis Obispo County125,669Marin County: 112,116 countMarin County112,116Santa Cruz County: 106,977 countSanta Cruz County106,977El Dorado County: 94,653 countEl Dorado County94,653Butte County: 92,813 countButte County92,813Merced County: 90,872 countMerced County90,872Yolo County: 82,447 countYolo County82,447Shasta County: 80,068 countShasta County80,068Humboldt County: 62,883 countHumboldt County62,883Imperial County: 58,044 countImperial County58,044Napa County: 55,817 countNapa County55,817Nevada County: 54,309 countNevada County54,309Madera County: 51,015 countMadera County51,015Kings County: 46,986 countKings County46,986Mendocino County: 41,675 countMendocino County41,675Sutter County: 34,798 countSutter County34,798Lake County: 34,400 countLake County34,400Tuolumne County: 31,589 countTuolumne County31,589Yuba County: 30,661 countYuba County30,661Calaveras County: 27,683 countCalaveras County27,683Tehama County: 27,527 countTehama County27,527Siskiyou County: 23,088 countSiskiyou County23,088San Benito County: 21,322 countSan Benito County21,322Amador County: 19,019 countAmador County19,019Plumas County: 14,921 countPlumas County14,921Mono County: 13,676 countMono County13,676Lassen County: 12,231 countLassen County12,231Del Norte County: 11,230 countDel Norte County11,230Glenn County: 11,073 countGlenn County11,073Mariposa County: 9,836 countMariposa County9,836Inyo County: 9,524 countInyo County9,524Colusa County: 8,211 countColusa County8,211Trinity County: 8,112 countTrinity County8,112Modoc County: 4,764 countModoc County4,764Sierra County: 2,120 countSierra County2,120Alpine County: 1,558 countAlpine County1,558Los Angeles County: 3,650,466 countLos Angeles County3,650,466San Diego County: 1,250,641 countSan Diego County1,250,641Orange County: 1,146,169 countOrange County1,146,169Riverside County: 869,414 countRiverside County869,414San Bernardino County: 743,886 countSan Bernardino County743,886Santa Clara County: 698,837 countSanta Clara County698,837Alameda County: 637,212 countAlameda County637,212Sacramento County: 598,385 countSacramento County598,385Contra Costa County: 429,260 countContra Costa County429,260San Francisco County: 414,602 countSan Francisco County414,602Fresno County: 344,894 countFresno County344,894Kern County: 306,999 countKern County306,999Ventura County: 295,878 countVentura County295,878San Mateo County: 287,184 countSan Mateo County287,184San Joaquin County: 260,151 countSan Joaquin County260,151Sonoma County: 207,699 countSonoma County207,699Stanislaus County: 185,149 countStanislaus County185,149Placer County: 179,266 countPlacer County179,266Solano County: 164,693 countSolano County164,693Santa Barbara County: 160,592 countSanta Barbara County160,592Tulare County: 154,202 countTulare County154,202Monterey County: 145,469 countMonterey County145,469San Luis Obispo County: 125,669 countSan Luis Obispo County125,669Marin County: 112,116 countMarin County112,116Santa Cruz County: 106,977 countSanta Cruz County106,977El Dorado County: 94,653 countEl Dorado County94,653Butte County: 92,813 countButte County92,813Merced County: 90,872 countMerced County90,872Yolo County: 82,447 countYolo County82,447Shasta County: 80,068 countShasta County80,068Humboldt County: 62,883 countHumboldt County62,883Imperial County: 58,044 countImperial County58,044Napa County: 55,817 countNapa County55,817Nevada County: 54,309 countNevada County54,309Madera County: 51,015 countMadera County51,015Kings County: 46,986 countKings County46,986Mendocino County: 41,675 countMendocino County41,675Sutter County: 34,798 countSutter County34,798Lake County: 34,400 countLake County34,400Tuolumne County: 31,589 countTuolumne County31,589Yuba County: 30,661 countYuba County30,661Calaveras County: 27,683 countCalaveras County27,683Tehama County: 27,527 countTehama County27,527Siskiyou County: 23,088 countSiskiyou County23,088San Benito County: 21,322 countSan Benito County21,322Amador County: 19,019 countAmador County19,019Plumas County: 14,921 countPlumas County14,921Mono County: 13,676 countMono County13,676Lassen County: 12,231 countLassen County12,231Del Norte County: 11,230 countDel Norte County11,230Glenn County: 11,073 countGlenn County11,073Mariposa County: 9,836 countMariposa County9,836Inyo County: 9,524 countInyo County9,524Colusa County: 8,211 countColusa County8,211Trinity County: 8,112 countTrinity County8,112Modoc County: 4,764 countModoc County4,764Sierra County: 2,120 countSierra County2,120Alpine County: 1,558 countAlpine County1,558
count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Retrieved 2026-10-12.

Full ranking

RankCounties2024
count		Change on 2023
1Los Angeles County3,650,466+0.7%
2San Diego County1,250,641+0.8%
3Orange County1,146,169+0.7%
4Riverside County869,414+1.1%
5San Bernardino County743,886+0.7%
6Santa Clara County698,837+0.7%
7Alameda County637,212+1%
8Sacramento County598,385+0.8%
9Contra Costa County429,260+0.6%
10San Francisco County414,602+0.7%
11Fresno County344,894+0.8%
12Kern County306,999+0.8%
13Ventura County295,878+0.4%
14San Mateo County287,184+0.6%
15San Joaquin County260,151+1.3%
16Sonoma County207,699+0.7%
17Stanislaus County185,149+0.5%
18Placer County179,266+1.7%
19Solano County164,693+0.8%
20Santa Barbara County160,592+0.5%
21Tulare County154,202+1.1%
22Monterey County145,469+0.6%
23San Luis Obispo County125,669+0.6%
24Marin County112,116+0.2%
25Santa Cruz County106,977+0.3%
26El Dorado County94,653+0.4%
27Butte County92,813+1.8%
28Merced County90,872+1.4%
29Yolo County82,447+1.1%
30Shasta County80,068+0.4%
31Humboldt County62,883+0.4%
32Imperial County58,044+0.9%
33Napa County55,817+0.4%
34Nevada County54,309+0.6%
35Madera County51,015+1.3%
36Kings County46,986+0.6%
37Mendocino County41,675+0.4%
38Sutter County34,798+0.3%
39Lake County34,400+0.4%
40Tuolumne County31,589+0.3%
41Yuba County30,661+1.9%
42Calaveras County27,683+0.4%
43Tehama County27,527+0.3%
44Siskiyou County23,088+0.1%
45San Benito County21,322+1.8%
46Amador County19,019+0.5%
47Plumas County14,921-0.8%
48Mono County13,676+0.3%
49Lassen County12,231-0%
50Del Norte County11,230+0.7%
51Glenn County11,073+0.9%
52Mariposa County9,836+0.4%
53Inyo County9,524+0.3%
54Colusa County8,211+0.7%
55Trinity County8,112-0.1%
56Modoc County4,764-0.2%
57Sierra County2,120+1%
58Alpine County1,558-1.8%

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/2024/table-based-SF/data/5YRData/acsdt5y2024-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, 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat

MLA 9

American Community Survey 5-year estimates, table B25001: total housing units, Counties in California by housing units, 2024. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat. Invokely, https://invokely.ai/rankings/housing-units/california-counties. 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, 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat. Also distributed by Invokely, https://invokely.ai/rankings/housing-units/california-counties.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25001: total housing units, Counties in California by housing units, 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat, via Invokely: https://invokely.ai/rankings/housing-units/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 B25001: total housing units: Counties in California by housing units, 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/housing-units/california-counties. 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/2024/table-based-SF/data/5YRData/acsdt5y2024-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, 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-b25001.dat
L2  - https://invokely.ai/rankings/housing-units/california-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/housing-units/california-counties.
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/2024/table-based-SF/data/5YRData/acsdt5y2024-b25001.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest housing units?

Los Angeles County, with 3.65 million in 2024, according to the U.S. Census Bureau.

Which county has the lowest housing units?

Alpine County, with 1,558 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 B25001: total housing units. Retrieved 2026-10-12.

Housing units: other rankings

Counties in California: more rankings