Lucas is a town in Dunn County, Wisconsin, United States. The population was 658 at the 2000 census. The unincorporated community of Hatchville is located partially in the town. The town is rural, consisting of farms and forest. According to the United States Census Bureau, the town has a total area of 35.7 square miles, all of it land. The bedrock is sandstone, an…Lucas is a town in Dunn County, Wisconsin, United States. The population was 658 at the 2000 census. The unincorporated community of Hatchville is located partially in the town. The town is rural, consisting of farms and forest. According to the United States Census Bureau, the town has a total area of 35.7 square miles, all of it land. The bedrock is sandstone, and the land is relatively flat with an average elevation of 1079 ft..