Hanover Park, IL has a population of 38,331 and is the 1,083rd largest city in the United States. The population density is 6,047 per sq mi which is 2620% higher than the Illinois average and 6574% higher than the national average. The median age in Hanover Park is 34 which is approximately 9% lower than the Illinois average of 37. In Hanover Park, 58% of the population over 15 years of age are married, 47% speak English and 34% speak Spanish. 56% of Hanover Park residents were born in Illinois, 9% were born out of state, 1% were born outside of the United States and 34% were foreign born.