Below is a list of Putnam County OH zip codes. For your research we have also included Putnam County Area Code, Time Zone, UTC and the local County FIPS Code. Each Putnam County Ohio zip code has a center Longitude / Latitude point (the Putnam County center is -84.143203735352 / 41.00830078125). For your convenience we have also indicated if that zip code in Putnam County observes Daylight Savings time.