North Riverside, IL has a population of 6,983 and is the 5,186th largest city in the United States. The population density is 4,249 per sq mi which is 1811% higher than the Illinois average and 4589% higher than the national average. The median age in North Riverside is 41 which is approximately 10% higher than the Illinois average of 37. In North Riverside, 48% of the population over 15 years of age are married, 67% speak English and 24% speak Spanish. 77% of North Riverside residents were born in Illinois, 11% were born out of state, 1% were born outside of the United States and 11% were foreign born.