This is a list of services that we provide within and to the 48733 Zipcode. 48733 is inside of Fairgrove, MI, and it's within Tuscola County, MI. 48733 is located in Fairgrove, MI. Visit the Fairgrove, MI municipality page for more information about the city. Fairgrove is a village in Tuscola County, Michigan, known for its farming heritage. The village was first settled in the mid-19th century. Fairgrove is part of Michigan's Thumb region, famous for its agricultural communities. The village celebrates its history with annual community events. The surrounding area offers scenic farmland and rural tranquility.