Amarillo (/ˌæməˈrɪloʊ/ am-ə-RIL-o) is the 14th-most populous city in the state of Texas, in the United States. It is also the largest city in the Texas Panhandle, and the seat of Potter County. A portion of the city extends into Randall County. The population was 190,695 at the 2010 census (105,486 in Potter County, and 85,209 in Randall). The Amarillo metropolitan area has an estimated population of 236,113 in four counties.