Below is a list of Saint Henry OH zip codes. For your research we have also included Saint Henry Area Code, Time Zone, UTC and the local Mercer County FIPS Code. Each Saint Henry Ohio zip code has a center Longitude / Latitude point (the Saint Henry center is -84.628997802734 / 40.421398162842). For your convenience we have also indicated if that zip code in Saint Henry observes Daylight Savings time.