Below is a list of Oak Grove MI zip codes. For your research we have also included Oak Grove Area Code, Time Zone, UTC and the local Livingston County FIPS Code. Each Oak Grove Michigan zip code has a center Longitude / Latitude point (the Oak Grove center is -83.931701660156 / 42.700298309326). For your convenience we have also indicated if that zip code in Oak Grove observes Daylight Savings time.