Brown Township is a civil township of Manistee County in the U.S. state of Michigan. As of the 2020 census, the township population was 704. A post office opened with the name "Portage Creek" on October 5, 1858. The name changed to Norwalk on January 21, 1863, and operated until December 27, 1968.
Geography
According to the United States Census Bureau, the township has a total area of , of which are land and , 1.39%, are water.