Below is a list of Columbiana County OH zip codes. For your research we have also included Columbiana County Area Code, Time Zone, UTC and the local County FIPS Code. Each Columbiana County Ohio zip code has a center Longitude / Latitude point (the Columbiana County center is -80.776397705078 / 40.77970123291). For your convenience we have also indicated if that zip code in Columbiana County observes Daylight Savings time.