Dolton, IL has a population of 23,113 and is the 1,882nd largest city in the United States. The population density is 5,060 per sq mi which is 2176% higher than the Illinois average and 5485% higher than the national average. The median age in Dolton is 36 which is approximately 3% lower than the Illinois average of 37. In Dolton, 39% of the population over 15 years of age are married, 95% speak English and 3% speak Spanish. 77% of Dolton residents were born in Illinois, 18% were born out of state, 1% were born outside of the United States and 3% were foreign born.