Hoffman Estates, IL has a population of 51,727 and is the 786th largest city in the United States. The population density is 2,485 per sq mi which is 1018% higher than the Illinois average and 2642% higher than the national average. The median age in Hoffman Estates is 38 which is approximately 1% higher than the Illinois average of 37. In Hoffman Estates, 64% of the population over 15 years of age are married, 57% speak English and 14% speak Spanish. 55% of Hoffman Estates residents were born in Illinois, 13% were born out of state, 1% were born outside of the United States and 31% were foreign born.