Knoxville, TN

ZIP code 37990 is a special-purpose mailing ZIP associated with Knoxville, Tennessee, rather than a conventional residential area with clear neighborhood boundaries. No major landmarks can be confidently assigned to the ZIP itself. Well-known Knoxville landmarks—including the Sunsphere and World’s Fair Park, Market Square, and the University of Tennessee—are citywide attractions, but are not necessarily within 37990.