The Hills, TX has a population of 2,562 and is the 9,699th largest city in the United States. The population density is 2,382 per sq mi which is 2357% higher than the Texas average and 2529% higher than the national average. The median age in The Hills is 45 which is approximately 33% higher than the Texas average of 34. In The Hills, 77% of the population over 15 years of age are married, 90% speak English and 4% speak Spanish. 38% of The Hills residents were born in Texas, 53% were born out of state, 1% were born outside of the United States and 9% were foreign born.