FLATONIA, TEXAS. Flatonia is on Interstate Highway 10, U.S. Highway 90, and the main line of the Southern Pacific Railroad twelve miles west of Schulenburg in southwestern Fayette County. It was established on April 8, 1874, on land acquired from William Alexander Faries (Ferris, Farris) by the Galveston, Harrisburg and San Antonio Railway and named for pioneer merchant F. W. Flato. At that time residents of the original Flatonia settlement, one mile southeast, and Oso, three miles northeast, loaded their homes and businesses on wagons and moved to the new location on the tracks. The post office that had been established at old Flatonia in 1870 was moved to the new town without changing its name.