Kilgore, TX has a population of 14,658 and is the 2,887th largest city in the United States. The population density is 790 per sq mi which is 715% higher than the Texas average and 772% higher than the national average. The median age in Kilgore is 33 which is approximately 3% lower than the Texas average of 34. In Kilgore, 56% of the population over 15 years of age are married, 81% speak English and 16% speak Spanish. 70% of Kilgore residents were born in Texas, 19% were born out of state, 0% were born outside of the United States and 10% were foreign born.