- Chantland MHS Co.
- Charles City Police Department
- Charles Gabus Ford
- Cherokee Regional Medical Center
- CHI Health Mercy Corning
- CHI Health Mercy Council Bluffs
- CHI Health Missouri Valley
- Citizens Savings Bank
- City of Carroll
- Clarinda Co-Op
- Clarinda Regional Health Center
- Clarke College
- Clarke County Hospital
- Clinton National Bank
- Clow Valve Co
- Colwell Volunteer Fire Department
- Community Alert Network
- Community State Bank
- Compass Memorial Healthcare
- Compressor Controls Corp
- Conagra Brands
- Conrad Public Library
- Council Bluffs
- Covenant Medical Center
- Coveris
- Crawford County Memorial Hospital
- Creative Solutions Unlimited, Inc.
- CRST, Inc.
- Curly's Foods
- Dallas County Hospital
- Davis County Hospital
- Decatur County Hospital
- Department of Veteran Affairs Medical Clinic
- Des Moines Asphalt and Paving
- Des Moines Water Works
- Diamond Oil Co.
- DM Services, Inc.
- Dodgen Industries, Inc.
- Donaldson Company, Inc.
- Donate Life Iowa
- Dubuque Bank and Trust
- Eaton Corp
- Eldora Public Library
- Embassy Suites by Hilton Des Moines Downtown
- EMC National Life
- Fairfield Inn and Suites Cedar Rapids
- Fairfield Inn and Suites Des Moines Airport
- FandM Bank
- Farm Service Cooperative
- Farmers and Merchants State Bank