McCurtain occupies a large portion of southeast Oklahoma which it has held since before statehood - 16th November 1907 - when it became one of only seven original counties still existing today with their boundaries just as they did prior to becoming a full State Of Oklahoma.. Its county seat is located in Idabel alongside other major towns like Broken Bow, Eagletown, Millerton and Valliant sprinkled throughout its 6 500 km² (2510 sq mi) expanse.. According to data from the United States Census Bureau estimates; 33 151 people lived within McCurtain come 2019 making McCurtain by far one of less densely populated counties running along sideOklahoma's boundary lines.