Crestview Hills, KY has a population of 3,327 and is the 8,296th largest city in the United States. The population density is 1,754 per sq mi which is 1518% higher than the Kentucky average and 1836% higher than the national average. The median age in Crestview Hills is 47 which is approximately 23% higher than the Kentucky average of 39. In Crestview Hills, 55% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 49% of Crestview Hills residents were born in Kentucky, 49% were born out of state, 0% were born outside of the United States and 2% were foreign born.