Texarkana is a city in Bowie County, Texas, United States, located in the Ark-La-Tex region. Together with neighboring Texarkana, Arkansas, it forms the combined city of Texarkana.The population of the Texas city was 36,411 at the 2010 census. The city and its Arkansas counterpart form the core of the Texarkana Metropolitan Statistical Area, encompassing all of Bowie County, Texas, and Miller County, Arkansas.The two cities had a combined population of 66,330 at the 2010 census, and the metropolitan area had a total population of 136,027.exarkana is located at the junction of Interstate 30 and US highways 59, 67, 71, and 82 in extreme northeast Texas on the Texas-Arkansas border, at 33°26′14″N 94°4′3″W﻿ / ﻿33.43722°N 94.06750°W﻿ / 33.43722; -94.06750 (33.437170, -94.067394).