New Haven Township is a civil township of Gratiot County in the U.S. state of Michigan. The population was 1,064 at the 2020 census.

Communities

  • Gardenville was the name of a post office in the western part of the township from 1895 until 1902.
  • New Haven Center is an unincorporated community in the township at . A post office operated there from September 1863 until December 1904.
  • Sethton is an unincorporated community in the township at . It was at first a trading point in the township, named for Seth Gardner. A post office operated from June 1882 to October 1885 and again from August 1887 to December 1904.