Counties in Iowa by employer firm births

Polk County had the highest employer firm births of 99 counties in 2017, at 646. Worth County had the lowest, at 4. The median was 16 and the figure for Iowa was 3,362. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest646Polk County
Median1699 counties
Iowa3,362History

Map of counties, 2017

Adair County: 6 countAdams County: 4 countAllamakee County: 15 countAppanoose County: 12 countAudubon County: 7 countBenton County: 23 countBlack Hawk County: 95 countBoone County: 25 countBremer County: 24 countBuchanan County: 9 countBuena Vista County: 20 countButler County: 10 countCalhoun County: 6 countCarroll County: 33 countCass County: 10 countCedar County: 21 countCerro Gordo County: 41 countCherokee County: 11 countChickasaw County: 12 countClarke County: 5 countClay County: 24 countClayton County: 13 countClinton County: 31 countCrawford County: 18 countDallas County: 138 countDavis County: 11 countDecatur County: 7 countDelaware County: 22 countDes Moines County: 36 countDickinson County: 40 countDubuque County: 117 countEmmet County: 9 countFayette County: 21 countFloyd County: 19 countFranklin County: 14 countFremont County: 10 countGreene County: 11 countGrundy County: 10 countGuthrie County: 18 countHamilton County: 6 countHancock County: 11 countHardin County: 19 countHarrison County: 23 countHenry County: 16 countHoward County: 5 countHumboldt County: 11 countIda County: 8 countIowa County: 18 countJackson County: 23 countJasper County: 34 countJefferson County: 27 countJohnson County: 157 countJones County: 18 countKeokuk County: 9 countKossuth County: 17 countLee County: 33 countLinn County: 247 countLouisa County: 5 countLucas County: 5 countLyon County: 14 countMadison County: 24 countMahaska County: 21 countMarion County: 33 countMarshall County: 33 countMills County: 15 countMitchell County: 9 countMonona County: 9 countMonroe County: 7 countMontgomery County: 13 countMuscatine County: 39 countO'Brien County: 20 countOsceola County: 8 countPage County: 12 countPalo Alto County: 16 countPlymouth County: 29 countPocahontas County: 9 countPolk County: 646 countPottawattamie County: 95 countPoweshiek County: 25 countRinggold County: 5 countSac County: 7 countScott County: 163 countShelby County: 7 countSioux County: 52 countStory County: 92 countTama County: 10 countTaylor County: 5 countUnion County: 16 countVan Buren County: 10 countWapello County: 17 countWarren County: 52 countWashington County: 23 countWayne County: 9 countWebster County: 36 countWinnebago County: 12 countWinneshiek County: 27 countWoodbury County: 85 countWorth County: 4 countWright County: 13 count
  • Under 8
  • 8 to 11
  • 11 to 16
  • 16 to 23
  • 23 to 35
  • 35 and over
count, 2017. Source: U.S. Census Bureau, Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2017

Polk County: 646 countPolk County646Linn County: 247 countLinn County247Scott County: 163 countScott County163Johnson County: 157 countJohnson County157Dallas County: 138 countDallas County138Dubuque County: 117 countDubuque County117Black Hawk County: 95 countBlack Hawk County95Pottawattamie County: 95 countPottawattamie County95Story County: 92 countStory County92Woodbury County: 85 countWoodbury County85Sioux County: 52 countSioux County52Warren County: 52 countWarren County52Cerro Gordo County: 41 countCerro Gordo County41Dickinson County: 40 countDickinson County40Muscatine County: 39 countMuscatine County39Des Moines County: 36 countDes Moines County36Webster County: 36 countWebster County36Jasper County: 34 countJasper County34Carroll County: 33 countCarroll County33Lee County: 33 countLee County33Marion County: 33 countMarion County33Marshall County: 33 countMarshall County33Clinton County: 31 countClinton County31Plymouth County: 29 countPlymouth County29Jefferson County: 27 countJefferson County27Winneshiek County: 27 countWinneshiek County27Boone County: 25 countBoone County25Poweshiek County: 25 countPoweshiek County25Bremer County: 24 countBremer County24Clay County: 24 countClay County24Madison County: 24 countMadison County24Benton County: 23 countBenton County23Harrison County: 23 countHarrison County23Jackson County: 23 countJackson County23Washington County: 23 countWashington County23Delaware County: 22 countDelaware County22Cedar County: 21 countCedar County21Fayette County: 21 countFayette County21Mahaska County: 21 countMahaska County21Buena Vista County: 20 countBuena Vista County20Polk County: 646 countPolk County646Linn County: 247 countLinn County247Scott County: 163 countScott County163Johnson County: 157 countJohnson County157Dallas County: 138 countDallas County138Dubuque County: 117 countDubuque County117Black Hawk County: 95 countBlack Hawk County95Pottawattamie County: 95 countPottawattamie County95Story County: 92 countStory County92Woodbury County: 85 countWoodbury County85Sioux County: 52 countSioux County52Warren County: 52 countWarren County52Cerro Gordo County: 41 countCerro Gordo County41Dickinson County: 40 countDickinson County40Muscatine County: 39 countMuscatine County39Des Moines County: 36 countDes Moines County36Webster County: 36 countWebster County36Jasper County: 34 countJasper County34Carroll County: 33 countCarroll County33Lee County: 33 countLee County33Marion County: 33 countMarion County33Marshall County: 33 countMarshall County33Clinton County: 31 countClinton County31Plymouth County: 29 countPlymouth County29Jefferson County: 27 countJefferson County27Winneshiek County: 27 countWinneshiek County27Boone County: 25 countBoone County25Poweshiek County: 25 countPoweshiek County25Bremer County: 24 countBremer County24Clay County: 24 countClay County24Madison County: 24 countMadison County24Benton County: 23 countBenton County23Harrison County: 23 countHarrison County23Jackson County: 23 countJackson County23Washington County: 23 countWashington County23Delaware County: 22 countDelaware County22Cedar County: 21 countCedar County21Fayette County: 21 countFayette County21Mahaska County: 21 countMahaska County21Buena Vista County: 20 countBuena Vista County20
count. Source: 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.

Full ranking

RankCounties2017
count
Change on 2016
1Polk County646-3.9%
2Linn County247+13.8%
3Scott County163-2.4%
4Johnson County157+11.3%
5Dallas County138-6.8%
6Dubuque County117+25.8%
7Black Hawk County95-13.6%
7Pottawattamie County95+43.9%
9Story County92+7%
10Woodbury County85-18.3%
11Sioux County52-3.7%
11Warren County52+4%
13Cerro Gordo County41-28.1%
14Dickinson County40+66.7%
15Muscatine County39+14.7%
16Des Moines County36-32.1%
16Webster County36+28.6%
18Jasper County34+13.3%
19Carroll County33+26.9%
19Lee County33+6.5%
19Marion County33+3.1%
19Marshall County330%
23Clinton County31-39.2%
24Plymouth County290%
25Jefferson County27-37.2%
25Winneshiek County27+28.6%
27Boone County25-7.4%
27Poweshiek County25+13.6%
29Bremer County24+14.3%
29Clay County24+60%
29Madison County240%
32Benton County23-4.2%
32Harrison County23+43.8%
32Jackson County23-4.2%
32Washington County23-23.3%
36Delaware County22+83.3%
37Cedar County21+23.5%
37Fayette County21+31.3%
37Mahaska County21+5%
40Buena Vista County20-33.3%
40O'Brien County20+53.8%
42Floyd County19+26.7%
42Hardin County19-20.8%
44Crawford County18-5.3%
44Guthrie County18+80%
44Iowa County18+20%
44Jones County18+20%
48Kossuth County170%
48Wapello County17-29.2%
50Henry County16-5.9%
50Palo Alto County16+14.3%
50Union County16+33.3%
53Allamakee County15-11.8%
53Mills County15-11.8%
55Franklin County14-12.5%
55Lyon County14-17.6%
57Clayton County13-27.8%
57Montgomery County13+44.4%
57Wright County13+18.2%
60Appanoose County120%
60Chickasaw County12+50%
60Page County12-25%
60Winnebago County120%
64Cherokee County11+37.5%
64Davis County11-15.4%
64Greene County11-35.3%
64Hancock County11-31.3%
64Humboldt County11-8.3%
69Butler County10-37.5%
69Cass County10-16.7%
69Fremont County10-37.5%
69Grundy County10-16.7%
69Tama County10-9.1%
69Van Buren County10+11.1%
75Buchanan County9-40%
75Emmet County90%
75Keokuk County9+50%
75Mitchell County9-25%
75Monona County9+12.5%
75Pocahontas County90%
75Wayne County9+50%
82Ida County8-20%
82Osceola County8-27.3%
84Audubon County7+16.7%
84Decatur County7+40%
84Monroe County7-12.5%
84Sac County70%
84Shelby County7-50%
89Adair County6+20%
89Calhoun County6-25%
89Hamilton County6-50%
92Clarke County5+25%
92Howard County5-64.3%
92Louisa County5-44.4%
92Lucas County5-16.7%
92Ringgold County50%
92Taylor County5-54.5%
98Adams County4n/a
98Worth County4+33.3%

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. 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

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 by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978 (Counties in Iowa by employer firm births, 2017) [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 Iowa by employer firm births, 2017. 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/iowa-counties?period=2017. 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 Iowa by employer firm births, 2017. 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/iowa-counties?period=2017.

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 Iowa by employer firm births, 2017 [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/iowa-counties?period=2017 (Accessed: 22 October 2026).

BibTeX
@misc{census_counties_in_iowa_by_2017,
  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 Iowa by employer firm births, 2017}},
  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/iowa-counties?period=2017. 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 Iowa by employer firm births, 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_fac.csv
L2  - https://invokely.ai/rankings/employer-firm-births/iowa-counties?period=2017
Y2  - 2026/10/22
N1  - Accessed via Invokely, https://invokely.ai/rankings/employer-firm-births/iowa-counties?period=2017.
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  - 
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Rank Counties in Iowa by employer firm births using official data, and cite the source.
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Questions

Which county has the highest employer firm births?

Polk County, with 646 in 2017, according to the U.S. Census Bureau.

Which county has the lowest employer firm births?

Worth County, with 4 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 by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. Retrieved 2026-10-22.

Employer firm births: other rankings

Counties in Iowa: more rankings