Latty, MissouriLatty is an unincorporated community in Washington County, in the U.S. state of Missouri. The community is on Missouri Route 185 approximately 4.5 miles northwest of Potosi.HistoryA post office called Latty was established in 1894, and remained in operation until 1919. The community has the name of Latty Higginbotham, a woman in the neighborhood.