Lebanon is a town in Waupaca County, Wisconsin, United States. The population was 1,648 at the 2000 census. The unincorporated comm…Lebanon is a town in Waupaca County, Wisconsin, United States. The population was 1,648 at the 2000 census. The unincorporated community of Carmel is located in the town. The ghost town of Nowell was also located in the town.