Menasha is a city in Calumet and Winnebago counties in the U.S. state of Wisconsin. The population was 18,268 at the 2020 census. Of this, 15,144 were in Winnebago County, and 2,209 were in Calumet County. The city's name comes from the Winnebago word meaning "thorn" or "island". In the Menominee language, it is known as Menāēhsaeh, meaning "little island". It is part of the Fox Cities region of Wisconsin. Doty Island is located partially in Menasha, which it shares with Neenah.