Wenona, IL has a population of 1,127 and is the 14,420th largest city in the United States. The population density is 1,528 per sq mi which is 588% higher than the Illinois average and 1587% higher than the national average. The median age in Wenona is 37 which is approximately 2% lower than the Illinois average of 37. In Wenona, 58% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 87% of Wenona residents were born in Illinois, 11% were born out of state, 1% were born outside of the United States and 2% were foreign born.