Towanda, IL has a population of 441 and is the 20,338th largest city in the United States. The population density is 582 per sq mi which is 162% higher than the Illinois average and 543% higher than the national average. The median age in Towanda is 44 which is approximately 17% higher than the Illinois average of 37. In Towanda, 59% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 85% of Towanda residents were born in Illinois, 14% were born out of state, 1% were born outside of the United States and 0% were foreign born.