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is a city in Shelby County, Tennessee, United States. As of the 2000 census, the city had a population of 10,433. It is the home of Memphis Motorsports Park. It was granted the title "Flag City Tennessee" by the Tennessee state legislature.
According to the United States Census Bureau, the city has a total area of 15.6 square miles (40.4 km²), of which, 15.6 square miles (40.3 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.13%) is water.
The city is located in the Memphis Metropolitan Area, about 9 miles north of Memphis, Tennessee.
Millington is situated on the southeastern edge of the New Madrid Seismic Zone, an area with a high earthquake risk.
The city is close to Meeman-Shelby Forest State Park, Fort Pillow State Park and the Mississippi River.