Below is a list of Casstown OH zip codes. For your research we have also included Casstown Area Code, Time Zone, UTC and the local Miami County FIPS Code. Each Casstown Ohio zip code has a center Longitude / Latitude point (the Casstown center is -84.129501342773 / 40.054500579834). For your convenience we have also indicated if that zip code in Casstown observes Daylight Savings time.