Hamilton is an unincorporated community in the northeast corner of the township, where M-40 crosses the Rabbit River at 42°40′38″N 86°00′22″W. The first white settler was Charles Butler, who purchased the entirety of section 6 in 1835. It was at first known as Rabbit River, with a post office operating from May 1851 to September 1852. Aaron Willards platted a village named Rabbit River in 1862, with a second post office opening in July 1864. The post office was renamed "Hamilton" in May 1870. The ZIP code is 49419 and serves much of the township and surrounding areas.