Plum Springs, KY has a population of 446 and is the 20,257th largest city in the United States. The population density is 1,491 per sq mi which is 1276% higher than the Kentucky average and 1546% higher than the national average. The median age in Plum Springs is 41 which is approximately 5% higher than the Kentucky average of 39. In Plum Springs, 56% of the population over 15 years of age are married, 97% speak English and 3% speak Spanish. 77% of Plum Springs residents were born in Kentucky, 22% were born out of state, 0% were born outside of the United States and 1% were foreign born.