Here is a list of Supreme Radio Communications, Inc. service area's:
- Brown
- Bureau
- Carroll
- Champaign
- Clark
- Clinton, Iowa
- Coles
- DeWitt
- Douglas
- Edgar
- Ford
- Fulton
- Hancock
- Henderson
- Henry
- Knox
- La Salle
- Lee
- Livingston
- Louisa, Iowa
- Macon
- Marshall
- Mason
- McDonough
- McLean
- Mercer
- Muscatine, Iowa
- Ogle
- Peoria
- Piatt
- Putnam
- Rock Island
- Schuyler
- Scott, Iowa
- Stark
- Tazewell
- Vermilion
- Warren
- Whiteside
- Woodford