Cities and towns

• Pekin
• East Peoria
• Morton
• Washington
• Peoria Heights
• Creve Coeur
• Marquette Heights
• Tremont
• Mackinaw
• Delavan
• North Pekin
• Minier
• South Pekin
• Goodfield
• Hopedale
• Deer Creek
• Green Valley
• Armington

Unincorporated communities

• Heritage Lake