Millington is a town in Shelby County, Tennessee. As of the 2000 U.S. Census, this town had a population of about 10,433. Millington is the home of the Memphis Motorsports Park. It was granted the title "Flag City Tennessee" by the Tennessee State Legislature. Millington is the location of the Naval Support Activity Mid-South, which is located at the former Memphis Naval Air Station, which was closed in 1993. Also at that location is now a civilian General Aviation airport for jets and propeller-driver airplanes.