Fork Township is a civil township of Mecosta County in the U.S. state of Michigan. The population was 1,627 at the 2020 census. Fork Township was organized in 1867. Fork Township occupies the northeast corner of Mecosta County, with Osceola County bordering the township to the north, Isabella County bordering it to the east, and Clare County touching th…Fork Township is a civil township of Mecosta County in the U.S. state of Michigan. The population was 1,627 at the 2020 census. Fork Township was organized in 1867. Fork Township occupies the northeast corner of Mecosta County, with Osceola County bordering the township to the north, Isabella County bordering it to the east, and Clare County touching the township's northeast corner. The village of Barryton is in the southern part of the township. State highway M-66 crosses the township from south to north.