Maroa, IL has a population of 1,724 and is the 11,909th largest city in the United States. The population density is 967 per sq mi which is 335% higher than the Illinois average and 967% higher than the national average. The median age in Maroa is 40 which is approximately 8% higher than the Illinois average of 37. In Maroa, 60% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 82% of Maroa residents were born in Illinois, 17% were born out of state, 0% were born outside of the United States and 1% were foreign born.