According to the United States Census Bureau, the city has a total area of 3.7square miles (9.6
Square kilometers). As of the census of 2000, there were 3,116 people, 1,143households, and 873families residing in the city. The population density was 835.7people per square mile (322.5Square kilometers). There were 1,185 housing units at an average density of 317.8 per square mile (122.7Square kilometers). West Lake Hills is a city in Travis County, Texas, United States. The population was 3,116 at the 2000 census, and 3,021 in the 2005 census estimate. The city of West lake Hills is a relatively Wealthy suburb of Austin, located on the west side of Austin on the edge of the Hill Country. The city developed rapidly in the 1970s and 1980s with many sprawling luxury homes set in the hills on the south side of the Colorado River.