Grandwood Park, IL has a population of 5,471 and is the 6,087th largest city in the United States. The population density is 3,379 per sq mi which is 1420% higher than the Illinois average and 3629% higher than the national average. The median age in Grandwood Park is 36 which is approximately 3% lower than the Illinois average of 37. In Grandwood Park, 62% of the population over 15 years of age are married, 75% speak English and 8% speak Spanish. 54% of Grandwood Park residents were born in Illinois, 28% were born out of state, 2% were born outside of the United States and 15% were foreign born.