Minonk, IL has a population of 2,151 and is the 10,582nd largest city in the United States. The population density is 897 per sq mi which is 304% higher than the Illinois average and 890% higher than the national average. The median age in Minonk is 39 which is approximately 3% higher than the Illinois average of 37. In Minonk, 71% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 89% of Minonk residents were born in Illinois, 11% were born out of state, 0% were born outside of the United States and 0% were foreign born.