Houston, PA has a population of 1,290 and is the 13,593rd largest city in the United States. The population density is 3,140 per sq mi which is 1033% higher than the Pennsylvania average and 3365% higher than the national average. The median age in Houston is 41 which is approximately 1% higher than the Pennsylvania average of 41. In Houston, 55% of the population over 15 years of age are married, 96% speak English and 1% speak Spanish. 86% of Houston residents were born in Pennsylvania, 10% were born out of state, 0% were born outside of the United States and 3% were foreign born.