Stronach Township is a civil township of Manistee County in the U.S. state of Michigan. The population was 834 at the 2020 census. The settlement was first called "Paggeotville" and was renamed when John and Adam Stronach built a sawmill in 1841. A post office opened August 9, 1866 and was discontinued on December 21, 1893. Other sources indicate the post office operated until March 31, 1954 The area is now served by the Manistee post office with ZIP code 49660.
Geography
Stronach is in southern Manistee County and is bordered to the northwest by the city of Manistee, the county seat. The southern border of the township is the Mason County line. According to the U.S. Census Bureau, the township has a total area of , of which are land and , or 0.96%, are water.