Miami, the county seat of Roberts County, is on U.S. Highway 60 between Canadian and Pampa in the southeastern part of the county. It is in the Red Deer Creek valley, backdropped by a mesa called Mount Moriah. Miami derives its name from an Indian word meaning "sweetheart." The first settler on this site was Marion Armstrong, who in 1879 erected a half-dugout stagecoach stand near Red Deer Creek on the mail route from Mobeetie and Fort Elliott to Las Vegas, New Mexico. The town was platted in 1887 by B. H. Eldridge on the proposed route of the Southern Kansas (later Panhandle and Santa Fe) Railway. Samuel Edge and Mark Huselby purchased several lots and formed the Miami Townsite Company. Supplies for the railroad-construction crews were furnished by daily stages from Mobeetie. By 1888 Miami had 250 inhabitants and three hotels, three grocery stores, two saloons and a cafe, two livery stables, a post office, a mercantile store, a drugstore, and a tin shop.