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Iowa— USA

Companies in Iowa

638K companies registered in Iowa, sourced from official business registers and enriched with industry, size, location and contact data. Below: the largest companies by reported revenue, and how the Iowa business base breaks down by industry and headcount.

638K
companies
#31
of 50 states
1%
of US records
15
industries ranked
September 2026
data updated

Part of the United States company directory.

Rankings

Largest companies in Iowa

By reported (actual) revenue, updated September 2026. Public-sector entities are excluded.

#CompanyIndustryCityRevenue (USD)Employees
1Berkshire Hathaway Energy CompanyElectric power generation, transmission and distributionDes Moines$25.9B23,800
2Athene Holding LtdLife insuranceWest Des Moines$25.7B1,970
3Casey's General Stores, Inc.Retail sale in non-specialised stores with food, beverages or tobacco predominatingAnkeny$17.6B49,272
4Principal Financial Group, Inc.Non-life insuranceDes Moines$15.6B19,700
5Hy-Vee, Inc.Retail sale in non-specialised stores with food, beverages or tobacco predominatingWest Des Moines$14.2B73,000
6F&G Annuities & Life, Inc.Life insuranceDes Moines$5.7B1,173
7The University of IowaTertiary educationIowa City$5.6B17,000
8State University of IowaOther human health activitiesIowa City$5B2
9MidAmerican Funding, LLCTrade of gas through mainsDes Moines$3.9B3,600
10MidAmerican Energy CompanyElectric power generation, transmission and distributionDes Moines$3.9B3,400
11Renewable Energy Group, Inc.Manufacture of other organic basic chemicalsAmes$3.2B1,093
12HNI CorporationManufacture of office and shop furnitureMuscatine$2.8B19,500
13University of Iowa Health CareHospital activitiesIowa City$2.6B8,738
14Prairie Meadows Racetrack and Casino, Inc.Other sports activitiesAltoona$2.5B1,250
15Interstate Power and Light CompanyElectric power generation, transmission and distributionCedar Rapids$2.2B1,003
16Employers Mutual Casualty CompanyActivities auxiliary to insurance and pension fundingDes Moines$1.8B2,375
17Avera McKennanHospital activitiesRock Rapids$1.7B2,290
18United Fire Group, Inc.Activities auxiliary to insurance and pension fundingCedar Rapids$1.4B963
19Central Iowa Hospital CorpHospital activitiesDes Moines$1.4B3,495
20Central Iowa Hospital CorporationOther human health activitiesDes Moines$1.1B1,000
21Iowa State University of Science and TechnologyTertiary educationAmes$1.1B5,800
22Mercy Clinics, Inc.Hospital activitiesDes Moines$993M160
23Workiva Inc.Software publishingAmes$885M2,860
24Heartland Express, Inc.Freight transport by roadNorth Liberty$806M3,630
25Itc Midwest LLCElectric power generation, transmission and distributionCedar Rapids$651M95

Top 25 by revenue reported to the register. Companies filing no revenue figure are not ranked, whatever their size.

Berkshire Hathaway Energy Company leads Iowa at $25.9B in reported revenue, from Des Moines.

Coverage

Companies by industry in Iowa

The industries holding the most companies, by NACE activity code.

Other business support service activities n.e.c.8299
36,680
Mixed farming0150
25,538
Construction of residential and non-residential buildings4120
21,142
Business and other management consultancy activities7022
18,563
Management of real estate on a fee or contract basis6832
18,335
Trusts, funds and similar financial entities6430
16,929
Activities of other membership organisations n.e.c.9499
16,578
Restaurants and mobile food service activities5610
15,314
Other human health activities8690
13,149
Growing of cereals (except rice), leguminous crops and oil seeds0111
12,601
Maintenance and repair of motor vehicles4520
11,568
Growing of non-perennial crops0110
11,371
Activities of holding companies6420
10,398
Real estate agencies6831
10,393
Removal services4942
10,320

Ranked by number of companies. Each record carries its NACE code alongside SIC and NAICS, so the same segment can be pulled in any of the three schemes.

Browse these directories

Other business support service activities n.e.c. is the largest activity in Iowa, with 36,680 companies.

Distribution

Company size

By number of employees.

1-4
560,616
5-9
39,786
10-19
12,488
20-49
8,064
50-99
3,462
100-199
1,840
200-499
976
500-999
312
1000+
255

10,181 companies have no disclosed headcount (excluded from the chart).

89% of Iowa companies with a disclosed headcount fall in the 1-4 employee band.

Data coverage

What a Iowa record carries

Share of the state's companies holding each contact field.

24%

with a website

44%

with a phone number

17%

with an email address

Counted against the 638K companies in Iowa. Firmographics — industry, size, address, status — are present on every record.

FAQ

Companies in Iowa — frequently asked questions

There are 638K companies registered in Iowa in the InfobelPRO database, across every sector from sole proprietorships to large enterprises.
By revenue reported to the register, the largest company headquartered in Iowa is Berkshire Hathaway Energy Company, based in Des Moines, in electric power generation, transmission and distribution.
Other business support service activities n.e.c. (36,680 companies), Mixed farming (25,538 companies), Construction of residential and non-residential buildings (21,142 companies) lead the Iowa business base by number of companies.
Registered name and address, industry classification in NACE, SIC and NAICS, company status and legal form, employee band, reported revenue where filed, and contact fields — website, phone and email — where available.
Yes. The Iowa file is available as a bulk export or through the API, filtered by industry, company size, city or revenue. Licensing is on volume and use, not per seat.

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