Lewisville, city, Denton County, northeastern Texas; incorporated 1925. A residential suburb of Dallas with diversified industry, Lewisville is situated near the large Dallas-Fort Worth International Airport and Lewisville Lake, a body of water formerly known as the Garza-Little Elm Reservoir. Population 24,273 (1980); 46,521 (1990); 77,737 (2000).
