Counties in Idaho by employer firm births
Ada County had the highest employer firm births of 43 counties in 2021, at 1,218. Butte County had the lowest, at 3. The median was 31 and the figure for Idaho was 3,983. Source: the U.S. Census Bureau.
Map of counties, 2021
- Under 10
- 10 to 20
- 20 to 30
- 30 to 40
- 40 to 110
- 110 and over
- No data
All counties, 2021
Full ranking
| Rank | Counties | 2021 | Change on 2020 |
|---|---|---|---|
| 1 | Ada County | 1,218 | +8.9% |
| 2 | Canyon County | 499 | +9.4% |
| 3 | Kootenai County | 459 | +9.3% |
| 4 | Bonneville County | 285 | +18.8% |
| 5 | Twin Falls County | 182 | -3.7% |
| 6 | Bannock County | 146 | +4.3% |
| 7 | Bonner County | 143 | +20.2% |
| 8 | Blaine County | 106 | +7.1% |
| 9 | Madison County | 87 | +26.1% |
| 10 | Bingham County | 70 | +40% |
| 11 | Nez Perce County | 66 | +20% |
| 12 | Latah County | 64 | -1.5% |
| 13 | Jefferson County | 49 | +4.3% |
| 14 | Teton County | 46 | 0% |
| 15 | Valley County | 44 | -6.4% |
| 16 | Cassia County | 38 | 0% |
| 17 | Gem County | 37 | -9.8% |
| 17 | Payette County | 37 | -14% |
| 19 | Idaho County | 35 | +6.1% |
| 20 | Boundary County | 33 | -17.5% |
| 21 | Elmore County | 31 | +47.6% |
| 21 | Fremont County | 31 | +40.9% |
| 23 | Franklin County | 28 | -9.7% |
| 24 | Jerome County | 27 | -3.6% |
| 25 | Minidoka County | 24 | -7.7% |
| 26 | Lemhi County | 20 | +33.3% |
| 27 | Benewah County | 18 | +20% |
| 27 | Clearwater County | 18 | +28.6% |
| 27 | Custer County | 18 | +50% |
| 27 | Gooding County | 18 | +28.6% |
| 31 | Owyhee County | 17 | -15% |
| 32 | Shoshone County | 16 | -23.8% |
| 33 | Washington County | 13 | +85.7% |
| 34 | Adams County | 12 | +200% |
| 34 | Caribou County | 12 | +300% |
| 36 | Boise County | 10 | -50% |
| 37 | Power County | 9 | +50% |
| 38 | Lincoln County | 7 | 0% |
| 39 | Bear Lake County | 6 | -25% |
| 40 | Oneida County | 5 | +66.7% |
| 41 | Camas County | 4 | |
| 41 | Lewis County | 4 | -50% |
| 43 | Butte County | 3 |
Other periods
About this ranking
New employer firms: firms of age zero in March of the year, meaning that every establishment of the firm had its first employees during the previous twelve months. United States: Census Bureau Business Dynamics Statistics, which calls these firms startups.
A firm counts only when it has employees, so a business without staff is not a birth, and a new branch, merger or change of ownership of an existing firm is not a birth either. Not the same as business_applications (requests for an employer number) or enterprise_births (European business demography). The year is the twelve months to March: 2023 compares March 2022 with March 2023.
Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. 1 counties with data in other periods have no value for 2021 and are left out rather than filled from another source. Equal values share a rank.
How to cite
U.S. Census Bureau. Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty_fac.csv. Retrieved 2026-10-22.Citation styles
APA 7
U.S. Census Bureau. (2025). Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978 (Counties in Idaho by employer firm births, 2021) [Data set]. Retrieved October 22, 2026, from https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty_fac.csv
MLA 9
Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978, Counties in Idaho by employer firm births, 2021. U.S. Census Bureau, 25 Sept. 2025, https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty_fac.csv. Invokely, https://invokely.ai/rankings/employer-firm-births/idaho-counties?period=2021. Accessed 22 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2025. Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. Counties in Idaho by employer firm births, 2021. Dataset. Accessed October 22, 2026. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty_fac.csv. Also distributed by Invokely, https://invokely.ai/rankings/employer-firm-births/idaho-counties?period=2021.
Harvard
U.S. Census Bureau (2025) Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978, Counties in Idaho by employer firm births, 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty_fac.csv, via Invokely: https://invokely.ai/rankings/employer-firm-births/idaho-counties?period=2021 (Accessed: 22 October 2026).
BibTeX
@misc{census_counties_in_idaho_by_2021,
author = {{U.S. Census Bureau}},
title = {{Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978: Counties in Idaho by employer firm births, 2021}},
year = {2025},
howpublished = {Data set},
url = {https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty_fac.csv},
urldate = {2026-10-22},
note = {Accessed via Invokely, https://invokely.ai/rankings/employer-firm-births/idaho-counties?period=2021. Publisher attribution: U.S. Census Bureau. Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023\_st\_cty\_fac.csv. Retrieved 2026-10-22.},
}
RIS
TY - DATA
AU - U.S. Census Bureau
TI - Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978: Counties in Idaho by employer firm births, 2021
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_fac.csv
L2 - https://invokely.ai/rankings/employer-firm-births/idaho-counties?period=2021
Y2 - 2026/10/22
N1 - Accessed via Invokely, https://invokely.ai/rankings/employer-firm-births/idaho-counties?period=2021.
N1 - Publisher attribution: U.S. Census Bureau. Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty_fac.csv. Retrieved 2026-10-22.
ER -
Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank Counties in Idaho by employer firm births using official data, and cite the source.
rank_places {"indicator":"employer_firm_births","level":"province","within":"Idaho","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=employer_firm_births&level=province&within=Idaho&limit=10Questions
Which county has the highest employer firm births?
Ada County, with 1,218 in 2021, according to the U.S. Census Bureau.
Which county has the lowest employer firm births?
Butte County, with 3 in 2021.
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 by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. Retrieved 2026-10-22. 1 counties have no value for 2021 and are not ranked.