Counties in California by employer firms

Los Angeles County had the highest employer firms of 58 counties in 2017, at 194,779. Alpine County had the lowest, at 24. The median was 3,336 and the figure for California was 652,550. Source: the U.S. Census Bureau.

Highest194,779Los Angeles County
Median3,33658 counties
California652,550History

All counties, 2017

Los Angeles County: 194,779 countLos Angeles County194,779Orange County: 71,983 countOrange County71,983San Diego County: 61,244 countSan Diego County61,244Santa Clara County: 35,773 countSanta Clara County35,773Alameda County: 30,250 countAlameda County30,250Riverside County: 28,386 countRiverside County28,386San Bernardino County: 26,000 countSan Bernardino County26,000San Francisco County: 25,698 countSan Francisco County25,698Sacramento County: 21,446 countSacramento County21,446Contra Costa County: 17,814 countContra Costa County17,814San Mateo County: 16,451 countSan Mateo County16,451Ventura County: 16,244 countVentura County16,244Fresno County: 12,685 countFresno County12,685Sonoma County: 11,278 countSonoma County11,278Kern County: 9,527 countKern County9,527Santa Barbara County: 9,227 countSanta Barbara County9,227San Joaquin County: 8,685 countSan Joaquin County8,685Placer County: 8,348 countPlacer County8,348Marin County: 7,994 countMarin County7,994Stanislaus County: 6,854 countStanislaus County6,854Monterey County: 6,835 countMonterey County6,835San Luis Obispo County: 6,688 countSan Luis Obispo County6,688Santa Cruz County: 5,666 countSanta Cruz County5,666Solano County: 5,423 countSolano County5,423Tulare County: 4,931 countTulare County4,931Butte County: 3,747 countButte County3,747El Dorado County: 3,621 countEl Dorado County3,621Napa County: 3,567 countNapa County3,567Shasta County: 3,390 countShasta County3,390Yolo County: 3,282 countYolo County3,282Humboldt County: 2,532 countHumboldt County2,532Nevada County: 2,500 countNevada County2,500Merced County: 2,410 countMerced County2,410Mendocino County: 2,028 countMendocino County2,028Imperial County: 1,946 countImperial County1,946Madera County: 1,601 countMadera County1,601Sutter County: 1,452 countSutter County1,452Kings County: 1,330 countKings County1,330Tuolumne County: 1,082 countTuolumne County1,082Lake County: 926 countLake County926San Benito County: 884 countSan Benito County884Siskiyou County: 822 countSiskiyou County822Tehama County: 804 countTehama County804Calaveras County: 759 countCalaveras County759Amador County: 733 countAmador County733Yuba County: 677 countYuba County677Mono County: 468 countMono County468Plumas County: 446 countPlumas County446Inyo County: 437 countInyo County437Glenn County: 394 countGlenn County394Del Norte County: 347 countDel Norte County347Lassen County: 338 countLassen County338Colusa County: 310 countColusa County310Mariposa County: 272 countMariposa County272Trinity County: 212 countTrinity County212Modoc County: 133 countModoc County133Sierra County: 49 countSierra County49Alpine County: 24 countAlpine County24
count. Source: U.S. Census Bureau, Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Retrieved 2026-10-11.

Full ranking

RankCounties2017
count
Change on 2016
1Los Angeles County194,779+1.6%
2Orange County71,983+1.6%
3San Diego County61,244+1.4%
4Santa Clara County35,773+0.4%
5Alameda County30,250+0.7%
6Riverside County28,386+2.6%
7San Bernardino County26,000+2%
8San Francisco County25,698+0.2%
9Sacramento County21,446+1.5%
10Contra Costa County17,814+0.6%
11San Mateo County16,451+0.1%
12Ventura County16,244+0.9%
13Fresno County12,685+1.1%
14Sonoma County11,278+1.2%
15Kern County9,527+0.5%
16Santa Barbara County9,227+0.3%
17San Joaquin County8,685+0.7%
18Placer County8,348+2.4%
19Marin County7,994-0.1%
20Stanislaus County6,854+1%
21Monterey County6,835-0.4%
22San Luis Obispo County6,688+0.1%
23Santa Cruz County5,666+1%
24Solano County5,423-0%
25Tulare County4,931+0.7%
26Butte County3,747+0.1%
27El Dorado County3,621+1.7%
28Napa County3,567+0.4%
29Shasta County3,390+1.6%
30Yolo County3,282+1.2%
31Humboldt County2,532+0.4%
32Nevada County2,500+0.3%
33Merced County2,410+1%
34Mendocino County2,028+0.3%
35Imperial County1,946-0.8%
36Madera County1,601-1.9%
37Sutter County1,452+0.8%
38Kings County1,330+1.5%
39Tuolumne County1,082+0.2%
40Lake County926+4.6%
41San Benito County884+0.6%
42Siskiyou County822-3.1%
43Tehama County804-1.8%
44Calaveras County759+0.5%
45Amador County733+0.4%
46Yuba County677+1.5%
47Mono County468+2.9%
48Plumas County446+1.1%
49Inyo County437-1.1%
50Glenn County394+0.5%
51Del Norte County347+1.5%
52Lassen County338-0.6%
53Colusa County310-2.8%
54Mariposa County272+0.4%
55Trinity County212+1.9%
56Modoc County133-2.2%
57Sierra County49-7.5%
58Alpine County24-7.7%

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, 2017) [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, 2017. 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=2017. 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, 2017. 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=2017.

Harvard

U.S. Census Bureau (2025) Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties, Counties in California by employer firms, 2017 [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=2017 (Accessed: 11 October 2026).

BibTeX
@misc{census_counties_in_california_by_2017,
  author = {{U.S. Census Bureau}},
  title = {{Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties: Counties in California by employer firms, 2017}},
  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=2017. 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, 2017
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=2017
Y2  - 2026/10/11
N1  - Accessed via Invokely, https://invokely.ai/rankings/employer-firms/california-counties?period=2017.
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 194,779 in 2017, according to the U.S. Census Bureau.

Which county has the lowest employer firms?

Alpine County, with 24 in 2017.

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