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is a city in DeSoto County, Mississippi, United States. Horn Lake is a suburb of Memphis, Tennessee, which is located just a few miles to the north. As of the 2000 U.S. Census, the city's population was 14,099 (though a 2007 estimate placed the population at 24,133). The city is best known as the future headquarters of the American Contract Bridge League (ACBL).
According to the United States Census Bureau, the city has a total area of 7.2 square miles (18.8 km²), all of it land.