Midland County is one of 83 counties located in the U.S. state of Michigan. As of the 2020 census, the population was 83,494 making it the 24th largest by population in the state. It is the sixth smallest county by area. The county seat is Midland. The name of the county is due to its proximity to the geographical center of the Lower Peninsula. It was founded in 1831; however, it was not until 1855 that the county was effectively organized.