Sanborn is a town in Ashland County in the U.S. state of Wisconsin. The population was 1,331 at the 2010 census. The unincorporated communities of Birch, Birch Hill, Diaperville, Franks Field, New Odanah, Odanah, and Sedgwick are located in the town. Long Island, one of the Apostle Islands, is also a part of the town.