Norridge, IL has a population of 15,023 and is the 2,828th largest city in the United States. The population density is 8,299 per sq mi which is 3633% higher than the Illinois average and 9060% higher than the national average. The median age in Norridge is 46 which is approximately 23% higher than the Illinois average of 37. In Norridge, 62% of the population over 15 years of age are married, 50% speak English and 6% speak Spanish. 62% of Norridge residents were born in Illinois, 4% were born out of state, 2% were born outside of the United States and 32% were foreign born.