Midland is a city in Midland County, Michigan, United States, and its county seat. The population was 42,547 at the 2020 census. It is the …Midland is a city in Midland County, Michigan, United States, and its county seat. The population was 42,547 at the 2020 census. It is the principal city of the Midland metropolitan statistical area, part of the larger Saginaw-Midland-Bay City combined statistical area. The city is bordered by Midland Township, though the two are administered separately.