State Line Post Office and Federal Building

One of the most unique features of Texarkana is the ONLY U.S. Post Office sitting in two states. This Post Office straddles Texas and Arkansas and has separate zip codes, 71854 for Texarkana, Arkansas and 75501 for Texarkana, Texas. Built in 1932-33 the structure features a base of pink granite from Texas and walls of limestone from Arkansas. Remarkably, Texarkana boasts this to be the most photographed courthouse in the United States, second only to the Supreme Court in Washington.