Highlands, TX has a population of 7,386 and is the 4,989th largest city in the United States. The population density is 1,513 per sq mi which is 1239% higher than the Texas average and 1570% higher than the national average. The median age in Highlands is 35 which is approximately 3% higher than the Texas average of 34. In Highlands, 56% of the population over 15 years of age are married, 68% speak English and 31% speak Spanish. 65% of Highlands residents were born in Texas, 20% were born out of state, 0% were born outside of the United States and 15% were foreign born.