Below is a list of Onward IN zip codes. For your research we have also included Onward Area Code, Time Zone, UTC and the local Cass County FIPS Code. Each Onward Indiana zip code has a center Longitude / Latitude point (the Onward center is -86.194801330566 / 40.694900512695). For your convenience we have also indicated if that zip code in Onward observes Daylight Savings time.