Palos Park, IL has a population of 4,934 and is the 6,540th largest city in the United States. The population density is 779 per sq mi which is 250% higher than the Illinois average and 759% higher than the national average. The median age in Palos Park is 52 which is approximately 38% higher than the Illinois average of 37. In Palos Park, 71% of the population over 15 years of age are married, 84% speak English and 2% speak Spanish. 81% of Palos Park residents were born in Illinois, 10% were born out of state, 0% were born outside of the United States and 9% were foreign born.