Lombard, IL has a population of 44,025 and is the 928th largest city in the United States. The population density is 4,300 per sq mi which is 1835% higher than the Illinois average and 4647% higher than the national average. The median age in Lombard is 39 which is approximately 5% higher than the Illinois average of 37. In Lombard, 57% of the population over 15 years of age are married, 81% speak English and 6% speak Spanish. 70% of Lombard residents were born in Illinois, 16% were born out of state, 1% were born outside of the United States and 14% were foreign born.