What are the Hamlet, Illinois Zip Codes for 2020, 2019Primary Zip Codes for HamletZip CodePrimary CitySecondary City61231AledoHamlet, Mercer, Ohio Grove, Old Gilchrist, Shale City, Sunbeam, WanlockCities sharing Zip Codes with HamletZip CodePrimary CitySecondary CityMore Information61231AledoHamlet61231AledoMercer61231AledoOhio Grove61231AledoOld Gilchrist61231AledoShale City61231AledoSunbeam61231AledoWanlockAdvertisements