Gibraltar is a town in Door County, Wisconsin, United States. The population was 1,228 at the 2020 census. The unincorporated communities of Fish Creek and Juddville are located in the town. According to the United States Census Bureau, the town has a total area of 151.4 square miles, of which, 33.8 square miles of it is land and 11…Gibraltar is a town in Door County, Wisconsin, United States. The population was 1,228 at the 2020 census. The unincorporated communities of Fish Creek and Juddville are located in the town. According to the United States Census Bureau, the town has a total area of 151.4 square miles, of which, 33.8 square miles of it is land and 117.6 square miles of it is water.