Plainfield Township is a civil township of Iosco County in the U.S. state of Michigan. The population was 3,350 at the 2020 census, down from 3,799 at the 2010 census.
Communities
- Esmond was the name of a post office in this township from 1886 until 1889.
- Hale is a small community within the township at M-65 and Esmond Road. The Iosco County Fairgrounds are located in Hale.
- Long Lake is a small community within the township on the west end of Long Lake, northwest of Hale at . A post office named Long Lake with the ZIP code 48743 serves an area of the township northwest of the lake.
- Sand Lake is a census-designated place partially located within the township, as well as Grant Township and Wilber Township.
- South Branch is an unincorporated community in the northwest of the township, along the border with Ogemaw County.
Geography
According to the United States Census Bureau, the township has a total area of 107.6 square miles (278.7 km), of which 103.8 square miles (268.8 km) is land and 3.8 square miles (9.9 km) (3.56%) is water.
Demographics
As of the census