Here as in many Texas counties, ghost towns and ghost post offices outnumber living ones. La Plata (formerly Grenada) thrived as county seat and was a major stop on New Mexico-Amarillo Road, 1880s and 90s. Its 28 houses and businesses were removed to Hereford with the county government in 1898. Ayr, which lost county seat to La Plata, 1890, had an early post office and a few frame buildings. Other nonexistent post offices include Escarbada (on XIT Ranch), 1889; Dean, 1892-99; Mirage (probably on LS Ranch), 1891-94; Kelso, 1907-1908. (1969)