Kilgore, TX has a population of 14,658 people with a median age of 33.3 and a median household income of $56,870. Between 2015 and 2016 the population of Kilgore, TX grew from 14,442 to 14,658, a 1.5% increase and its median household income declined from $58,643 to $56,870, a 3.02% decrease.