Calumet Park, IL has a population of 8,320 and is the 4,566th largest city in the United States. The population density is 7,479 per sq mi which is 3264% higher than the Illinois average and 8155% higher than the national average. The median age in Calumet Park is 39 which is approximately 4% higher than the Illinois average of 37. In Calumet Park, 37% of the population over 15 years of age are married, 93% speak English and 7% speak Spanish. 79% of Calumet Park residents were born in Illinois, 16% were born out of state, 0% were born outside of the United States and 5% were foreign born.