Below is a list of Oregonia OH zip codes. For your research we have also included Oregonia Area Code, Time Zone, UTC and the local Warren County FIPS Code. Each Oregonia Ohio zip code has a center Longitude / Latitude point (the Oregonia center is -84.096397399902 / 39.45240020752). For your convenience we have also indicated if that zip code in Oregonia observes Daylight Savings time.