Boardman, WisconsinBoardman is an unincorporated community in St. Croix County, Wisconsin, United States, located just southwest of New Richmond on County Road A, in the town of Richmond.HistoryBoardman was named in 1853 for C. A. Boardman, an early settler. A post office called Boardman was established in 1862, and remained in operation until it was discontinued in 1954.