Hartford, KY has a population of 2,732 and is the 9,294th largest city in the United States. The population density is 973 per sq mi which is 798% higher than the Kentucky average and 974% higher than the national average. The median age in Hartford is 36 which is approximately 8% lower than the Kentucky average of 39. In Hartford, 61% of the population over 15 years of age are married, 96% speak English and 3% speak Spanish. 83% of Hartford residents were born in Kentucky, 14% were born out of state, 1% were born outside of the United States and 2% were foreign born.