Carlyle, IL has a population of 3,303 and is the 8,328th largest city in the United States. The population density is 975 per sq mi which is 338% higher than the Illinois average and 976% higher than the national average. The median age in Carlyle is 39 which is approximately 5% higher than the Illinois average of 37. In Carlyle, 56% of the population over 15 years of age are married, 92% speak English and 4% speak Spanish. 78% of Carlyle residents were born in Illinois, 19% were born out of state, 0% were born outside of the United States and 3% were foreign born.