Below is a list of Riga MI zip codes. For your research we have also included Riga Area Code, Time Zone, UTC and the local Lenawee County FIPS Code. Each Riga Michigan zip code has a center Longitude / Latitude point (the Riga center is -83.825103759766 / 41.809299468994). For your convenience we have also indicated if that zip code in Riga observes Daylight Savings time.