Hart, TX has a population of 1,183 and is the 14,118th largest city in the United States. The population density is 1,603 per sq mi which is 1553% higher than the Texas average and 1669% higher than the national average. The median age in Hart is 40 which is approximately 17% higher than the Texas average of 34. In Hart, 59% of the population over 15 years of age are married, 35% speak English and 65% speak Spanish. 71% of Hart residents were born in Texas, 9% were born out of state, 1% were born outside of the United States and 20% were foreign born.