Ceresco, also known as the Wisconsin Phalanx, was a commune founded in Fond du Lac County, Wisconsin in 1844 by followers of the communitarian socialist ideas of Charles Fourier. About 180 people lived in the Association at its peak, farming nearly 2,000 acres. It was one of the three longest-lived Fourierist Associations in the United States, dissolving in 1850, and was unique for having assets which exceeded liabilities at the time of its termination. In 1858 the remaining inhabitants of Ceresco were annexed by the nearby town of Ripon, Wisconsin.