AMARILLO, a city of Texas, U.S.A., about 250m. W. of Oklahoma City, at an altitude of 3,660f t. ; the county seat of Potter county. It is on Federal highways 66, 164, 366, 370 and 385 ; and is served by the Rock Island, the Colorado and Southern, and the Panhandle and Santa Fe railways. The population, which in 1890 was only 482, was 15,494 in 1920; and was 43,132 in by the Federal census. Its rapid growth is due to the \develop ment of the entire Texas "Panhandle," of which it is the com mercial centre. The wholesale and jobbing business amounts to $100,000,000 a year; the bank deposits aggregated $25,000,000 in 1927; and the assessed valuation of property was $39,000,000. There are large business buildings and the hotels have 3,000 guest rooms. The building permits issued in 1926 represented values of $16,400,000. A water-supply system sufficient for a city of 100,00o has been undertaken. There are grain elevators, packing houses, creameries, a zinc smelter, an oil refinery and large railway shops. Amarillo was incorporated in 1887 and adopted a commission-manager form of government in 1913.