Counties in Iowa by employer firms

Polk County had the highest employer firms of 99 counties in 2020, at 9,379. Adams County had the lowest, at 92. The median was 353 and the figure for Iowa was 55,939. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest9,379Polk County
Lowest92Adams County
Median35399 counties
Iowa55,939History

Map of counties, 2020

Adair County: 191 countAdams County: 92 countAllamakee County: 290 countAppanoose County: 250 countAudubon County: 161 countBenton County: 454 countBlack Hawk County: 2,391 countBoone County: 504 countBremer County: 497 countBuchanan County: 408 countBuena Vista County: 444 countButler County: 264 countCalhoun County: 218 countCarroll County: 699 countCass County: 377 countCedar County: 391 countCerro Gordo County: 1,108 countCherokee County: 295 countChickasaw County: 317 countClarke County: 155 countClay County: 508 countClayton County: 409 countClinton County: 874 countCrawford County: 365 countDallas County: 1,810 countDavis County: 157 countDecatur County: 123 countDelaware County: 434 countDes Moines County: 874 countDickinson County: 630 countDubuque County: 2,160 countEmmet County: 232 countFayette County: 447 countFloyd County: 319 countFranklin County: 251 countFremont County: 145 countGreene County: 217 countGrundy County: 245 countGuthrie County: 238 countHamilton County: 331 countHancock County: 253 countHardin County: 418 countHarrison County: 297 countHenry County: 411 countHoward County: 215 countHumboldt County: 258 countIda County: 218 countIowa County: 398 countJackson County: 443 countJasper County: 629 countJefferson County: 523 countJohnson County: 2,653 countJones County: 417 countKeokuk County: 178 countKossuth County: 448 countLee County: 693 countLinn County: 4,190 countLouisa County: 178 countLucas County: 169 countLyon County: 327 countMadison County: 338 countMahaska County: 460 countMarion County: 673 countMarshall County: 653 countMills County: 256 countMitchell County: 283 countMonona County: 188 countMonroe County: 155 countMontgomery County: 239 countMuscatine County: 770 countO'Brien County: 424 countOsceola County: 164 countPage County: 353 countPalo Alto County: 243 countPlymouth County: 579 countPocahontas County: 172 countPolk County: 9,379 countPottawattamie County: 1,566 countPoweshiek County: 461 countRinggold County: 111 countSac County: 266 countScott County: 3,411 countShelby County: 320 countSioux County: 1,082 countStory County: 1,703 countTama County: 246 countTaylor County: 116 countUnion County: 265 countVan Buren County: 122 countWapello County: 600 countWarren County: 755 countWashington County: 583 countWayne County: 116 countWebster County: 819 countWinnebago County: 279 countWinneshiek County: 522 countWoodbury County: 2,051 countWorth County: 148 countWright County: 310 count
  • Under 180
  • 180 to 260
  • 260 to 350
  • 350 to 460
  • 460 to 740
  • 740 and over
count, 2020. 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, 2020

Polk County: 9,379 countPolk County9,379Linn County: 4,190 countLinn County4,190Scott County: 3,411 countScott County3,411Johnson County: 2,653 countJohnson County2,653Black Hawk County: 2,391 countBlack Hawk County2,391Dubuque County: 2,160 countDubuque County2,160Woodbury County: 2,051 countWoodbury County2,051Dallas County: 1,810 countDallas County1,810Story County: 1,703 countStory County1,703Pottawattamie County: 1,566 countPottawattamie County1,566Cerro Gordo County: 1,108 countCerro Gordo County1,108Sioux County: 1,082 countSioux County1,082Clinton County: 874 countClinton County874Des Moines County: 874 countDes Moines County874Webster County: 819 countWebster County819Muscatine County: 770 countMuscatine County770Warren County: 755 countWarren County755Carroll County: 699 countCarroll County699Lee County: 693 countLee County693Marion County: 673 countMarion County673Marshall County: 653 countMarshall County653Dickinson County: 630 countDickinson County630Jasper County: 629 countJasper County629Wapello County: 600 countWapello County600Washington County: 583 countWashington County583Plymouth County: 579 countPlymouth County579Jefferson County: 523 countJefferson County523Winneshiek County: 522 countWinneshiek County522Clay County: 508 countClay County508Boone County: 504 countBoone County504Bremer County: 497 countBremer County497Poweshiek County: 461 countPoweshiek County461Mahaska County: 460 countMahaska County460Benton County: 454 countBenton County454Kossuth County: 448 countKossuth County448Fayette County: 447 countFayette County447Buena Vista County: 444 countBuena Vista County444Jackson County: 443 countJackson County443Delaware County: 434 countDelaware County434O'Brien County: 424 countO'Brien County424Polk County: 9,379 countPolk County9,379Linn County: 4,190 countLinn County4,190Scott County: 3,411 countScott County3,411Johnson County: 2,653 countJohnson County2,653Black Hawk County: 2,391 countBlack Hawk County2,391Dubuque County: 2,160 countDubuque County2,160Woodbury County: 2,051 countWoodbury County2,051Dallas County: 1,810 countDallas County1,810Story County: 1,703 countStory County1,703Pottawattamie County: 1,566 countPottawattamie County1,566Cerro Gordo County: 1,108 countCerro Gordo County1,108Sioux County: 1,082 countSioux County1,082Clinton County: 874 countClinton County874Des Moines County: 874 countDes Moines County874Webster County: 819 countWebster County819Muscatine County: 770 countMuscatine County770Warren County: 755 countWarren County755Carroll County: 699 countCarroll County699Lee County: 693 countLee County693Marion County: 673 countMarion County673Marshall County: 653 countMarshall County653Dickinson County: 630 countDickinson County630Jasper County: 629 countJasper County629Wapello County: 600 countWapello County600Washington County: 583 countWashington County583Plymouth County: 579 countPlymouth County579Jefferson County: 523 countJefferson County523Winneshiek County: 522 countWinneshiek County522Clay County: 508 countClay County508Boone County: 504 countBoone County504Bremer County: 497 countBremer County497Poweshiek County: 461 countPoweshiek County461Mahaska County: 460 countMahaska County460Benton County: 454 countBenton County454Kossuth County: 448 countKossuth County448Fayette County: 447 countFayette County447Buena Vista County: 444 countBuena Vista County444Jackson County: 443 countJackson County443Delaware County: 434 countDelaware County434O'Brien County: 424 countO'Brien County424
count. Source: U.S. Census Bureau, Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Retrieved 2026-10-11.

Full ranking

RankCounties2020
count
Change on 2019
1Polk County9,379+1.4%
2Linn County4,190-1.2%
3Scott County3,411-0.3%
4Johnson County2,653-0.2%
5Black Hawk County2,391+0.2%
6Dubuque County2,160-0.1%
7Woodbury County2,051+0.6%
8Dallas County1,810+2.3%
9Story County1,703-0.5%
10Pottawattamie County1,566+1%
11Cerro Gordo County1,108-2.2%
12Sioux County1,082-0.7%
13Clinton County874-3.2%
13Des Moines County874-1.9%
15Webster County819-1%
16Muscatine County770+0.5%
17Warren County755+2%
18Carroll County699-1.5%
19Lee County693-0.7%
20Marion County673-2.5%
21Marshall County653-0.2%
22Dickinson County630-0.8%
23Jasper County629-0.5%
24Wapello County600-2.6%
25Washington County583+0.9%
26Plymouth County579-0.7%
27Jefferson County523-0.9%
28Winneshiek County5220%
29Clay County508-1.4%
30Boone County504-1.2%
31Bremer County497+1.2%
32Poweshiek County461+0.2%
33Mahaska County460-3.4%
34Benton County454-1.5%
35Kossuth County448+0.2%
36Fayette County447-0.4%
37Buena Vista County444-4.7%
38Jackson County443-1.6%
39Delaware County434+0.9%
40O'Brien County424-2.8%
41Hardin County418-3.9%
42Jones County417-0.5%
43Henry County411-0.2%
44Clayton County409-1.9%
45Buchanan County408+0.7%
46Iowa County398-0.5%
47Cedar County391-0.3%
48Cass County377+0.5%
49Crawford County365+3.4%
50Page County353+1.1%
51Madison County338-1.2%
52Hamilton County331-1.8%
53Lyon County327-1.5%
54Shelby County320+1.6%
55Floyd County319-1.5%
56Chickasaw County317-1.2%
57Wright County310-2.5%
58Harrison County297-1.7%
59Cherokee County295-0.7%
60Allamakee County290-6.5%
61Mitchell County2830%
62Winnebago County2790%
63Sac County266-2.9%
64Union County265-2.6%
65Butler County264-1.1%
66Humboldt County258+5.7%
67Mills County256-0.4%
68Hancock County2530%
69Franklin County251-4.6%
70Appanoose County250+3.3%
71Tama County246-2%
72Grundy County245-0.8%
73Palo Alto County243-4.3%
74Montgomery County239-5.5%
75Guthrie County238+0.4%
76Emmet County232-3.3%
77Calhoun County218-2.7%
77Ida County218-1.8%
79Greene County217-4.4%
80Howard County215-4%
81Adair County191+1.1%
82Monona County1880%
83Keokuk County178-1.7%
83Louisa County178+4.7%
85Pocahontas County172+1.2%
86Lucas County169+1.2%
87Osceola County164+2.5%
88Audubon County1610%
89Davis County157+1.9%
90Clarke County155-0.6%
90Monroe County155+1.3%
92Worth County148-2%
93Fremont County145+14.2%
94Decatur County123-4.7%
95Van Buren County122-3.2%
96Taylor County116-2.5%
96Wayne County116-3.3%
98Ringgold County111-2.6%
99Adams County92-3.2%

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, 2020) [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, 2020. 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=2020. 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, 2020. 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=2020.

Harvard

U.S. Census Bureau (2025) Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties, Counties in Iowa by employer firms, 2020 [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=2020 (Accessed: 11 October 2026).

BibTeX
@misc{census_counties_in_iowa_by_2020,
  author = {{U.S. Census Bureau}},
  title = {{Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties: Counties in Iowa by employer firms, 2020}},
  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=2020. 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, 2020
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=2020
Y2  - 2026/10/11
N1  - Accessed via Invokely, https://invokely.ai/rankings/employer-firms/iowa-counties?period=2020.
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 9,379 in 2020, according to the U.S. Census Bureau.

Which county has the lowest employer firms?

Adams County, with 92 in 2020.

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