What are the Cayuga, Wisconsin Zip Codes for 2020, 2019Primary Zip Codes for CayugaZip CodePrimary CitySecondary City54546MellenCayuga, Cosy Valley, MorseCities sharing Zip Codes with CayugaZip CodePrimary CitySecondary CityMore Information54546MellenCayuga54546MellenCosy Valley54546MellenMorseAdvertisements