Texarkana is named for three states: Texas, Arkansas and Louisiana. The Texas pink-granite post office straddles the state line between Texas and Arkansas and is in both states-the only federal state post office of its kind.

Stately old brick buildings house government offices and businesses. Also straddling the state line, the Bi-State Justice Center houses courts and jails for two separate states, counties and cities.

The Texarkana area was once part of the Great Southwest Trail, used for hundreds of years by Native American tribes traveling between the villages in the Mississippi Valley and the West and Southwest. The Grand Caddoes settled in the area, finding fertile soil for growing crops. Remnants of their culture surround the Texarkana area. In more recent history, Texarkana was the childhood home of Scott Joplin, "King of Ragtime," and a downtown mural celebrates him.

In extreme northeast Texas on the Arkansas border and just 25 miles from Louisiana, Texarkana is at the junction of I-30 and US Highways 59, 67, 71 and 82.