Counties in Iowa by employer firms

Polk County had the highest employer firms of 99 counties in 2021, at 9,589. Adams County had the lowest, at 93. The median was 345 and the figure for Iowa was 56,287. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest9,589Polk County
Lowest93Adams County
Median34599 counties
Iowa56,287History

Map of counties, 2021

Adair County: 196 countAdams County: 93 countAllamakee County: 291 countAppanoose County: 254 countAudubon County: 160 countBenton County: 442 countBlack Hawk County: 2,388 countBoone County: 511 countBremer County: 486 countBuchanan County: 408 countBuena Vista County: 430 countButler County: 259 countCalhoun County: 220 countCarroll County: 697 countCass County: 373 countCedar County: 391 countCerro Gordo County: 1,111 countCherokee County: 300 countChickasaw County: 321 countClarke County: 159 countClay County: 501 countClayton County: 397 countClinton County: 903 countCrawford County: 350 countDallas County: 1,859 countDavis County: 154 countDecatur County: 127 countDelaware County: 444 countDes Moines County: 872 countDickinson County: 630 countDubuque County: 2,164 countEmmet County: 230 countFayette County: 433 countFloyd County: 313 countFranklin County: 253 countFremont County: 135 countGreene County: 208 countGrundy County: 238 countGuthrie County: 237 countHamilton County: 322 countHancock County: 254 countHardin County: 411 countHarrison County: 295 countHenry County: 405 countHoward County: 213 countHumboldt County: 255 countIda County: 217 countIowa County: 387 countJackson County: 431 countJasper County: 615 countJefferson County: 525 countJohnson County: 2,666 countJones County: 413 countKeokuk County: 177 countKossuth County: 444 countLee County: 671 countLinn County: 4,237 countLouisa County: 173 countLucas County: 167 countLyon County: 331 countMadison County: 335 countMahaska County: 473 countMarion County: 705 countMarshall County: 654 countMills County: 262 countMitchell County: 272 countMonona County: 189 countMonroe County: 148 countMontgomery County: 249 countMuscatine County: 763 countO'Brien County: 416 countOsceola County: 163 countPage County: 345 countPalo Alto County: 243 countPlymouth County: 582 countPocahontas County: 172 countPolk County: 9,589 countPottawattamie County: 1,554 countPoweshiek County: 483 countRinggold County: 111 countSac County: 266 countScott County: 3,415 countShelby County: 321 countSioux County: 1,093 countStory County: 1,744 countTama County: 249 countTaylor County: 127 countUnion County: 264 countVan Buren County: 120 countWapello County: 593 countWarren County: 785 countWashington County: 587 countWayne County: 108 countWebster County: 802 countWinnebago County: 275 countWinneshiek County: 518 countWoodbury County: 2,043 countWorth County: 152 countWright County: 309 count
  • Under 180
  • 180 to 260
  • 260 to 350
  • 350 to 450
  • 450 to 740
  • 740 and over
count, 2021. Source: U.S. Census Bureau, Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Polk County: 9,589 countPolk County9,589Linn County: 4,237 countLinn County4,237Scott County: 3,415 countScott County3,415Johnson County: 2,666 countJohnson County2,666Black Hawk County: 2,388 countBlack Hawk County2,388Dubuque County: 2,164 countDubuque County2,164Woodbury County: 2,043 countWoodbury County2,043Dallas County: 1,859 countDallas County1,859Story County: 1,744 countStory County1,744Pottawattamie County: 1,554 countPottawattamie County1,554Cerro Gordo County: 1,111 countCerro Gordo County1,111Sioux County: 1,093 countSioux County1,093Clinton County: 903 countClinton County903Des Moines County: 872 countDes Moines County872Webster County: 802 countWebster County802Warren County: 785 countWarren County785Muscatine County: 763 countMuscatine County763Marion County: 705 countMarion County705Carroll County: 697 countCarroll County697Lee County: 671 countLee County671Marshall County: 654 countMarshall County654Dickinson County: 630 countDickinson County630Jasper County: 615 countJasper County615Wapello County: 593 countWapello County593Washington County: 587 countWashington County587Plymouth County: 582 countPlymouth County582Jefferson County: 525 countJefferson County525Winneshiek County: 518 countWinneshiek County518Boone County: 511 countBoone County511Clay County: 501 countClay County501Bremer County: 486 countBremer County486Poweshiek County: 483 countPoweshiek County483Mahaska County: 473 countMahaska County473Delaware County: 444 countDelaware County444Kossuth County: 444 countKossuth County444Benton County: 442 countBenton County442Fayette County: 433 countFayette County433Jackson County: 431 countJackson County431Buena Vista County: 430 countBuena Vista County430O'Brien County: 416 countO'Brien County416Polk County: 9,589 countPolk County9,589Linn County: 4,237 countLinn County4,237Scott County: 3,415 countScott County3,415Johnson County: 2,666 countJohnson County2,666Black Hawk County: 2,388 countBlack Hawk County2,388Dubuque County: 2,164 countDubuque County2,164Woodbury County: 2,043 countWoodbury County2,043Dallas County: 1,859 countDallas County1,859Story County: 1,744 countStory County1,744Pottawattamie County: 1,554 countPottawattamie County1,554Cerro Gordo County: 1,111 countCerro Gordo County1,111Sioux County: 1,093 countSioux County1,093Clinton County: 903 countClinton County903Des Moines County: 872 countDes Moines County872Webster County: 802 countWebster County802Warren County: 785 countWarren County785Muscatine County: 763 countMuscatine County763Marion County: 705 countMarion County705Carroll County: 697 countCarroll County697Lee County: 671 countLee County671Marshall County: 654 countMarshall County654Dickinson County: 630 countDickinson County630Jasper County: 615 countJasper County615Wapello County: 593 countWapello County593Washington County: 587 countWashington County587Plymouth County: 582 countPlymouth County582Jefferson County: 525 countJefferson County525Winneshiek County: 518 countWinneshiek County518Boone County: 511 countBoone County511Clay County: 501 countClay County501Bremer County: 486 countBremer County486Poweshiek County: 483 countPoweshiek County483Mahaska County: 473 countMahaska County473Delaware County: 444 countDelaware County444Kossuth County: 444 countKossuth County444Benton County: 442 countBenton County442Fayette County: 433 countFayette County433Jackson County: 431 countJackson County431Buena Vista County: 430 countBuena Vista County430O'Brien County: 416 countO'Brien County416
count. Source: U.S. Census Bureau, Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Retrieved 2026-10-11.

Full ranking

RankCounties2021
count
Change on 2020
1Polk County9,589+2.2%
2Linn County4,237+1.1%
3Scott County3,415+0.1%
4Johnson County2,666+0.5%
5Black Hawk County2,388-0.1%
6Dubuque County2,164+0.2%
7Woodbury County2,043-0.4%
8Dallas County1,859+2.7%
9Story County1,744+2.4%
10Pottawattamie County1,554-0.8%
11Cerro Gordo County1,111+0.3%
12Sioux County1,093+1%
13Clinton County903+3.3%
14Des Moines County872-0.2%
15Webster County802-2.1%
16Warren County785+4%
17Muscatine County763-0.9%
18Marion County705+4.8%
19Carroll County697-0.3%
20Lee County671-3.2%
21Marshall County654+0.2%
22Dickinson County6300%
23Jasper County615-2.2%
24Wapello County593-1.2%
25Washington County587+0.7%
26Plymouth County582+0.5%
27Jefferson County525+0.4%
28Winneshiek County518-0.8%
29Boone County511+1.4%
30Clay County501-1.4%
31Bremer County486-2.2%
32Poweshiek County483+4.8%
33Mahaska County473+2.8%
34Delaware County444+2.3%
34Kossuth County444-0.9%
36Benton County442-2.6%
37Fayette County433-3.1%
38Jackson County431-2.7%
39Buena Vista County430-3.2%
40O'Brien County416-1.9%
41Jones County413-1%
42Hardin County411-1.7%
43Buchanan County4080%
44Henry County405-1.5%
45Clayton County397-2.9%
46Cedar County3910%
47Iowa County387-2.8%
48Cass County373-1.1%
49Crawford County350-4.1%
50Page County345-2.3%
51Madison County335-0.9%
52Lyon County331+1.2%
53Hamilton County322-2.7%
54Chickasaw County321+1.3%
54Shelby County321+0.3%
56Floyd County313-1.9%
57Wright County309-0.3%
58Cherokee County300+1.7%
59Harrison County295-0.7%
60Allamakee County291+0.3%
61Winnebago County275-1.4%
62Mitchell County272-3.9%
63Sac County2660%
64Union County264-0.4%
65Mills County262+2.3%
66Butler County259-1.9%
67Humboldt County255-1.2%
68Appanoose County254+1.6%
68Hancock County254+0.4%
70Franklin County253+0.8%
71Montgomery County249+4.2%
71Tama County249+1.2%
73Palo Alto County2430%
74Grundy County238-2.9%
75Guthrie County237-0.4%
76Emmet County230-0.9%
77Calhoun County220+0.9%
78Ida County217-0.5%
79Howard County213-0.9%
80Greene County208-4.1%
81Adair County196+2.6%
82Monona County189+0.5%
83Keokuk County177-0.6%
84Louisa County173-2.8%
85Pocahontas County1720%
86Lucas County167-1.2%
87Osceola County163-0.6%
88Audubon County160-0.6%
89Clarke County159+2.6%
90Davis County154-1.9%
91Worth County152+2.7%
92Monroe County148-4.5%
93Fremont County135-6.9%
94Decatur County127+3.3%
94Taylor County127+9.5%
96Van Buren County120-1.6%
97Ringgold County1110%
98Wayne County108-6.9%
99Adams County93+1.1%

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 Iowa by employer firms, 2021) [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 Iowa by employer firms, 2021. 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/iowa-counties?period=2021. 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 Iowa by employer firms, 2021. 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/iowa-counties?period=2021.

Harvard

U.S. Census Bureau (2025) Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties, Counties in Iowa by employer firms, 2021 [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/iowa-counties?period=2021 (Accessed: 11 October 2026).

BibTeX
@misc{census_counties_in_iowa_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties: Counties in Iowa by employer firms, 2021}},
  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/iowa-counties?period=2021. 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 Iowa by employer firms, 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.csv
L2  - https://invokely.ai/rankings/employer-firms/iowa-counties?period=2021
Y2  - 2026/10/11
N1  - Accessed via Invokely, https://invokely.ai/rankings/employer-firms/iowa-counties?period=2021.
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?

Polk County, with 9,589 in 2021, according to the U.S. Census Bureau.

Which county has the lowest employer firms?

Adams County, with 93 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: employer firms, all covered industries, nation, states and counties. Retrieved 2026-10-11.

Employer firms: other rankings

Counties in Iowa: more rankings