Maquon, IL has a population of 334 and is the 21,885th largest city in the United States. The population density is 2,058 per sq mi which is 826% higher than the Illinois average and 2171% higher than the national average. The median age in Maquon is 41 which is approximately 10% higher than the Illinois average of 37. In Maquon, 55% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 86% of Maquon residents were born in Illinois, 14% were born out of state, 0% were born outside of the United States and 0% were foreign born.