There are 8 US Post Offices in Sequoyah County serving a total of 42,786 residents equating to 5,348 residents per post office. It's estimated that approximately 68,291 packages are handled across the 8 county post offices annually. Sequoyah County is a county located in the U.S. state of Oklahoma. As of the 2010 census, the population was 42,391. The county seat is Sallisaw. Sequoyah County was created in 1907 when Oklahoma became a state. It was named after Sequoyah, who created the Cherokee syllabary. Sequoyah County is part of the Fort Smith, AR-OK Metropolitan Statistical Area."