A state line runs through the combined courthouse and post office located at zip codes 75504 and 71854 in a town incorporated in the late 1800’s and shared by these two states.
Texas and Arkansas. Texarkana, Texas was incorporated in 1874 and Texarkana, Arkansas was incorporated in 1880. It is often referred to as the bi-city of Texarkana, USA. The dual United States courthouse/post office is located at 500 North State Line Avenue.
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