Sanger is a city in Denton County, Texas, United States. The population was 4,534 at the 2000 census. The 2006 population was 6,200. According to the United States Census Bureau, the city has a total area of 3.2square miles (8.3Square kilometers), of which, 3.1square miles (8.0Square kilometers) of it is land and 0.32% is water. The population in 1980 was 2,574,an increase of 60.6% since 1970. In 1990, the population was 3,508, and the city of Sangers current population is approximately 6,200. As of the census of 2000, there were 1,645 households and 1,220 families residing in the city.Sanger is on the western side of Lake Ray Roberts, one of the newest lakes in Texas. The community is located 20 miles from Texas Motor Speedway and WinStar Casino.