West Lake Hills, TX has a population of 3,309 and is the 8,321st largest city in the United States. The population density is 914 per sq mi which is 843% higher than the Texas average and 909% higher than the national average. The median age in West Lake Hills is 47 which is approximately 36% higher than the Texas average of 34. In West Lake Hills, 76% of the population over 15 years of age are married, 87% speak English and 7% speak Spanish. 50% of West Lake Hills residents were born in Texas, 39% were born out of state, 4% were born outside of the United States and 7% were foreign born.