Hewitt is a city in Todd County, Minnesota, United States, along the Wing River. The population was 266 at the 2010 census. It was 251 by the …Hewitt is a city in Todd County, Minnesota, United States, along the Wing River. The population was 266 at the 2010 census. It was 251 by the time of the 2020 Decennial Census. Hewitt was platted in 1891, and named for Henry Hewitt, an early settler. A post office has been in operation at Hewitt since 1891. The Hewitt Public School, built in 1911, is listed on the National Register of Historic Places.