Town Hall Address 100 E Broadway Monmouth, IL 61462 United States- Warren County Website https://www.cityofmonmouth.com/ Zoning (309) 734-4943 100 E Broadway Monmouth, IL 61462 United States Fire District (309) 734-8427 601 Industrial Park Rd Monmouth, IL 61462 United States Town Clerk (309) 734-2141 100 E Broadway Monmouth, IL 61462 United States Tax Collector (309) 734-8536 100 W Broadway Monmouth, IL 61462 United States Town Hall Hours M-F 8am-4:30pm County Warren