Counties in California by employer firms

Los Angeles County had the highest employer firms of 58 counties in 2012, at 178,677. Alpine County had the lowest, at 29. The median was 3,226 and the figure for California was 606,523. Source: the U.S. Census Bureau.

Highest178,677Los Angeles County
Median3,22658 counties
California606,523History

All counties, 2012

Los Angeles County: 178,677 countLos Angeles County178,677Orange County: 66,362 countOrange County66,362San Diego County: 56,189 countSan Diego County56,189Santa Clara County: 33,796 countSanta Clara County33,796Alameda County: 28,138 countAlameda County28,138Riverside County: 25,445 countRiverside County25,445San Bernardino County: 23,769 countSan Bernardino County23,769San Francisco County: 23,708 countSan Francisco County23,708Sacramento County: 19,909 countSacramento County19,909Contra Costa County: 16,747 countContra Costa County16,747San Mateo County: 15,608 countSan Mateo County15,608Ventura County: 15,244 countVentura County15,244Fresno County: 12,111 countFresno County12,111Sonoma County: 10,697 countSonoma County10,697Kern County: 9,297 countKern County9,297Santa Barbara County: 8,923 countSanta Barbara County8,923San Joaquin County: 8,209 countSan Joaquin County8,209Marin County: 7,719 countMarin County7,719Placer County: 7,449 countPlacer County7,449Monterey County: 6,604 countMonterey County6,604Stanislaus County: 6,411 countStanislaus County6,411San Luis Obispo County: 6,324 countSan Luis Obispo County6,324Santa Cruz County: 5,457 countSanta Cruz County5,457Solano County: 5,205 countSolano County5,205Tulare County: 4,811 countTulare County4,811Butte County: 3,702 countButte County3,702Shasta County: 3,414 countShasta County3,414El Dorado County: 3,348 countEl Dorado County3,348Napa County: 3,344 countNapa County3,344Yolo County: 3,107 countYolo County3,107Humboldt County: 2,582 countHumboldt County2,582Nevada County: 2,448 countNevada County2,448Merced County: 2,287 countMerced County2,287Mendocino County: 2,059 countMendocino County2,059Imperial County: 1,908 countImperial County1,908Madera County: 1,584 countMadera County1,584Sutter County: 1,426 countSutter County1,426Kings County: 1,301 countKings County1,301Tuolumne County: 1,111 countTuolumne County1,111Lake County: 865 countLake County865Siskiyou County: 859 countSiskiyou County859Tehama County: 818 countTehama County818San Benito County: 807 countSan Benito County807Calaveras County: 742 countCalaveras County742Yuba County: 688 countYuba County688Amador County: 684 countAmador County684Plumas County: 460 countPlumas County460Mono County: 438 countMono County438Inyo County: 436 countInyo County436Glenn County: 398 countGlenn County398Del Norte County: 373 countDel Norte County373Lassen County: 349 countLassen County349Colusa County: 318 countColusa County318Mariposa County: 278 countMariposa County278Trinity County: 209 countTrinity County209Modoc County: 149 countModoc County149Sierra County: 49 countSierra County49Alpine County: 29 countAlpine County29
count. Source: U.S. Census Bureau, Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Retrieved 2026-10-11.

Full ranking

RankCounties2012
count
Change on 2011
1Los Angeles County178,677+1.6%
2Orange County66,362+1.2%
3San Diego County56,189+1.1%
4Santa Clara County33,796+2.5%
5Alameda County28,138+1.3%
6Riverside County25,445+1.7%
7San Bernardino County23,769+0.9%
8San Francisco County23,708+2%
9Sacramento County19,909+0.7%
10Contra Costa County16,747+0.4%
11San Mateo County15,608+1.7%
12Ventura County15,244+0.4%
13Fresno County12,111+0.8%
14Sonoma County10,697+1.2%
15Kern County9,297+2%
16Santa Barbara County8,9230%
17San Joaquin County8,209+0.1%
18Marin County7,719+1.5%
19Placer County7,449+1.5%
20Monterey County6,604+0.3%
21Stanislaus County6,411-0.3%
22San Luis Obispo County6,324+0.8%
23Santa Cruz County5,457+0.7%
24Solano County5,205-0.1%
25Tulare County4,811+0.3%
26Butte County3,702-1.3%
27Shasta County3,414-0.1%
28El Dorado County3,348+0.2%
29Napa County3,344+1.7%
30Yolo County3,107+0.6%
31Humboldt County2,582-2%
32Nevada County2,448+1.7%
33Merced County2,287+0.8%
34Mendocino County2,059-0.6%
35Imperial County1,908+0.5%
36Madera County1,584+0.2%
37Sutter County1,426-1.3%
38Kings County1,301-2.1%
39Tuolumne County1,111-1.5%
40Lake County865+0.1%
41Siskiyou County859-1.2%
42Tehama County818-0.5%
43San Benito County807-0.7%
44Calaveras County742-3.8%
45Yuba County688+1.5%
46Amador County684+1.3%
47Plumas County460-0.6%
48Mono County438-1.4%
49Inyo County436-3.5%
50Glenn County398-1.2%
51Del Norte County373-2.1%
52Lassen County349-1.4%
53Colusa County318+1.3%
54Mariposa County278+0.7%
55Trinity County209-4.1%
56Modoc County149+2.8%
57Sierra County490%
58Alpine County29-6.5%

Other periods

About this ranking

Number of firms in the private nonfarm sectors covered by the US Census Bureau Business Dynamics Statistics. Establishments under common ownership form one firm.

Excludes nonemployer businesses. Differs from active_companies, the INE DIRCE count, which includes businesses without employees.

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. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Retrieved 2026-10-11.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2025). Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties (Counties in California by employer firms, 2012) [Data set]. Retrieved October 11, 2026, from https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv

MLA 9

Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties, Counties in California by employer firms, 2012. U.S. Census Bureau, 25 Sept. 2025, https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Invokely, https://invokely.ai/rankings/employer-firms/california-counties?period=2012. Accessed 11 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2025. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Counties in California by employer firms, 2012. Dataset. Accessed October 11, 2026. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Also distributed by Invokely, https://invokely.ai/rankings/employer-firms/california-counties?period=2012.

Harvard

U.S. Census Bureau (2025) Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties, Counties in California by employer firms, 2012 [Dataset]. Available at: https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv, via Invokely: https://invokely.ai/rankings/employer-firms/california-counties?period=2012 (Accessed: 11 October 2026).

BibTeX
@misc{census_counties_in_california_by_2012,
  author = {{U.S. Census Bureau}},
  title = {{Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties: Counties in California by employer firms, 2012}},
  year = {2025},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv},
  urldate = {2026-10-11},
  note = {Accessed via Invokely, https://invokely.ai/rankings/employer-firms/california-counties?period=2012. Publisher attribution: U.S. Census Bureau. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023\_st\_cty.csv. Retrieved 2026-10-11.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties: Counties in California by employer firms, 2012
PY  - 2025
DA  - 2025/09/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv
L2  - https://invokely.ai/rankings/employer-firms/california-counties?period=2012
Y2  - 2026/10/11
N1  - Accessed via Invokely, https://invokely.ai/rankings/employer-firms/california-counties?period=2012.
N1  - Publisher attribution: U.S. Census Bureau. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Retrieved 2026-10-11.
ER  - 
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Questions

Which county has the highest employer firms?

Los Angeles County, with 178,677 in 2012, according to the U.S. Census Bureau.

Which county has the lowest employer firms?

Alpine County, with 29 in 2012.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Retrieved 2026-10-11.

Employer firms: other rankings

Counties in California: more rankings