Wheaton, IL has a population of 53,568 and is the 750th largest city in the United States. The population density is 4,742 per sq mi which is 2033% higher than the Illinois average and 5134% higher than the national average. The median age in Wheaton is 38 which is approximately 2% higher than the Illinois average of 37. In Wheaton, 60% of the population over 15 years of age are married, 87% speak English and 3% speak Spanish. 62% of Wheaton residents were born in Illinois, 26% were born out of state, 1% were born outside of the United States and 10% were foreign born.