Below is a list of Muskingum County OH zip codes. For your research we have also included Muskingum County Area Code, Time Zone, UTC and the local County FIPS Code. Each Muskingum County Ohio zip code has a center Longitude / Latitude point (the Muskingum County center is -81.988800048828 / 39.954898834229). For your convenience we have also indicated if that zip code in Muskingum County observes Daylight Savings time.