| # | Company | Employees |
|---|---|---|
| 1 |
Principal Financial Groupprincipal.com
Provides retirement planning, investment management, and insurance products globally to help individuals and businesses build long-term wealth and achieve overall financial security. |
24,405 |
| 2 |
Wells Fargo Home Mortgagewellsfargo.com
A retail mortgage lender providing construction, renovation, home buying, refinancing, jumbo, adjustable-rate, and reverse mortgages to homeowners and homebuyers |
13,964 |
| 3 |
UnityPoint Healthunitypoint.org
Not-for-profit health system providing hospital, clinic, and home health services across Iowa, Illinois, and Wisconsin with patient-centered care. |
10,341 |
| 4 |
MercyOnemercyone.org
Integrated system of hospitals and clinics providing accessible care, training caregivers, and improving community well-being with a dedication to compassion, transformation, and trust |
7,091 |
| 5 |
University of Iowa Health Careuihealthcare.org
Academic medical center delivering innovative education, pioneering research, and exceptional patient care with a focus on collaboration and equity. |
6,789 |
| 6 |
Mercy Cedar Rapidsmercycare.org
Provider of personalized healthcare services with advanced technologies, dedicated staff, and compassionate philosophy for patients and employees in Iowa |
4,878 |
| 7 |
CRST The Transportation Solution, Inc.crst.com
A transportation and logistics company founded in 1955, offering solutions such as team expedited, flatbed, dedicated services, and home delivery |
3,730 |
| 8 |
F&Gfglife.com
Established in 1959, headquartered in Des Moines, Iowa, providing unique life insurance and annuity solutions nationwide with a focus on financial security |
2,406 |
| 9 |
MidAmerican Energy Companymidamericanenergy.com
Energy company serving over 15 million customers in Iowa, Illinois, Nebraska, and South Dakota, providing timely and relevant information on energy-related topics |
2,295 |
| 10 |
TMC Transportationtmctrans.com
A leading employee-owned flatbed carrier and logistics provider offering efficient transportation solutions for a variety of freight nationwide |
2,226 |
| 11 |
Wellmark Blue Cross and Blue Shieldwellmark.com
This company provides health coverage to over 2 million members in Iowa and South Dakota, part of a national network insuring over 100 million people |
2,195 |
| 12 |
EMC Insurance Companiesemcinsurance.com
Provides property and casualty insurance products and services across the United States with a focus on workersโ compensation protection. |
2,149 |
| 13 |
Atheneathene.com
Provides retirement income and savings products, fixed annuities, reinsurance, and institutional pension solutions across multiple countries. |
2,049 |
| 14 |
Genesis Health Systemmercyone.org
Comprehensive healthcare services including hospitals, home health, hospice, primary care, specialty clinics, senior living, and medical equipment across Eastern Iowa and Western Illinois. |
1,652 |
| 15 |
Sammons Financial Group Companiessammonsfinancialgroup.com
A privately held financial group providing life insurance, annuities, and retirement products with a values-based culture and commitment to communities |
1,603 |
| 16 |
UNIVERSITY OF IOWA HOSPITALS &CLINCS
A medical practice company located in Iowa City, Iowa, providing healthcare services at the University of Iowa Hospitals & Clinics on Hawkins Drive |
1,204 |
| 17 |
UnityPoint Health - St. Luke'sunitypoint.org
This company, known for connecting with communities, is no longer active but you can learn more about their mission on their official LinkedIn page |
1,094 |
| 18 |
UFG Insuranceufginsurance.com
An insurance company founded in 1946, offering property and casualty coverage in all 50 states through independent agencies with an A- rating from AM Best |
1,032 |
| 19 |
Iowa Department of Transportationiowadot.gov
A transportation organization in Iowa focused on safety, customer service, leadership, and integrity to improve lives through transportation |
999 |
| 20 |
Heartland Expressheartlandexpress.com
A leading transportation and logistics provider offering collaborative truckload solutions to top shippers, focused on improving customer satisfaction and supply chain value |
975 |
| 21 |
Mary Greeley Medical Centermgmc.org
A 220-bed regional referral center in central Iowa providing high-quality, cost-effective healthcare services with a focus on specialized care and personal touch |
851 |
| 22 |
Iowa Department of Health and Human Serviceshhs.iowa.gov
State government agency in Iowa providing quality programs and services to enhance health and resilience of individuals, families, and communities |
850 |
| 23 |
Broadlawns Medical Centerbroadlawns.org
A leading medical center with over 100 physicians and 1,200 employees, providing high-quality healthcare through various services and training programs |
838 |
| 24 |
Great River Healthgreatriverhealth.org
Regional health care system providing high-quality services in southeast Iowa, west-central Illinois, and northeast Missouri through hospitals, clinics, pharmacies, and medical equipment & supplies |
830 |
| 25 |
Care Initiativescareinitiatives.org
Iowa's largest not-for-profit provider offering transitional health care services including skilled nursing, rehabilitation, long term care, and hospice care |
819 |
| 26 |
Mercy Medical Center - Des Moinesmercyone.org
A not-for-profit Catholic health care provider in Des Moines operating multiple hospitals, employing 7,000 staff members and serving as a major referral center |
817 |
| 27 |
GreenState Credit Uniongreenstate.org
Financial cooperative offering diverse services with over $10 billion in assets and 400,000 members, open to those in Iowa and Illinois Counties |
805 |
| 28 |
The Iowa Cliniciowaclinic.com
A large multi-specialty physician group in Central Iowa offering leading-edge healthcare and exceptional customer service through partnership with local medical centers |
763 |
| 29 |
MidWestOne Bankmidwestone.bank
A community bank offering personal banking, small business banking, wealth management, mortgage services, and more in multiple states(Member FDIC) |
734 |
| 30 |
Bankers Trustbankerstrust.com
A leading financial institution offering commercial and consumer banking services, innovative financial solutions, community support, and numerous awards for excellence |
684 |
| 31 |
Veridian Credit Unionveridiancu.org
A financial cooperative in Iowa offering consumer financial services, with branches in Iowa, East Nebraska, and the Twin Cities metro area |
613 |
| 32 |
SHAZAM Network - ITS, Inc.shazam.net
This company is a pioneer in PIN-debit transactions, offering payment processing and technology solutions for community banks and credit unions |
581 |
| 33 |
Central Bankmycentral.bank
Established in 1877, the company provides financial solutions, supports local organizations, and offers services such as banking, home loans, trust, and insurance |
580 |
| 34 |
Medical Associates Clinicmahealthcare.com
A leading multispecialty group practice clinic in Iowa providing superior healthcare with over 190 providers and various specialty services in multiple locations |
556 |
| 35 |
Berkshire Hathaway Energybrkenergy.com
A sustainable energy company with a $1338 billion portfolio serving 12 million customers with low-cost, safe, and reliable service Headquarters in Iowa |
480 |
| 36 |
Lincoln Savings Bankmylsb.com
Established in 1902, we are a community bank dedicated to supporting local communities through charitable giving and personalized financial services |
266 |
| 37 |
Windstream
Provider of Unified Communications as a Service (UCaaS) solutions for businesses to streamline communication channels and enhance collaboration among teams |
263 |
| 38 |
BHE Renewablesbherenewables.com
A renewable energy company with a large US portfolio focusing on generation from wind, water, solar, and geothermal sources Headquartered in Des Moines, Iowa |
255 |
| 39 |
LifeServe Blood Centerlifeservebloodcenter.org
A non-profit blood center serving hospitals in Iowa, Nebraska, and South Dakota, providing essential blood products and saving lives through volunteer donations |
235 |
| 40 |
Express Logistics, Inc.exp-logistics.com
Specializes in LTL, truckload, and intermodal freight solutions, focusing on efficient product transportation and strong client partnerships. |
217 |
| 41 |
ImOn Communicationsimon.net
ImOn Communications provides data, voice, Internet, cable TV, and phone services to businesses and residents in Iowa, with a focus on advanced technology and local community support |
177 |
| 42 |
MRHCmrhcia.com
A comprehensive healthcare center offering diagnostic radiology, emergency care, inpatient treatment, skilled nursing services, and a range of medical services in Manning |
134 |
| 43 |
First American Bank1934.bank
Privately owned community bank with locations in Iowa and southwest Florida offering personal and private banking services, mortgages, and FDIC insurance |
70 |
| 44 |
R.I.A. Federal Credit Unionriafcu.com
A financial institution offering products and services to improve the financial well-being of its community, with a focus on customer satisfaction |
64 |
| 45 |
Ohnward Bank & Trustohnwardbank.bank
Locally owned bank providing innovative financial solutions for customers, supporting community growth, and offering equal employment opportunities |
51 |
| 46 |
South Story Bank & Trustsouthstorybank.com
A dedicated financial partner offering a wide range of services, including banking, loans, and financial management, to ensure clients' success |
43 |
| 47 |
AY Trucking LLCaytruckingllc.com
Specializing in full truckload, expedited, dedicated, and drop and hook dry van services to drive success in the transportation industry |
33 |
| 48 |
Security Savings Bank South Dakotabankwithssb.com
Established in 1920, the company offers a range of financial services including business banking, personal banking, wealth management, and insurance solutions |
21 |
| 49 |
Farmers State Bank of Yalesecure.yalebankiowa.com
A longstanding financial institution offering a range of banking services including accounts, CDs, IRAs, loans, with a focus on community support and growth |
14 |
| 50 |
First Trust and Savings Bank (Coralville, IA)ft-sb.com
Providing top-notch banking services with a personalized touch to customers in their local communities and around the globe |
1 |
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.
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