Ferris, IL has a population of 118 and is the 26,458th largest city in the United States. The population density is 60 per sq mi which is 73% lower than the Illinois average and 34% lower than the national average. The median age in Ferris is 44 which is approximately 18% higher than the Illinois average of 37. In Ferris, 51% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 69% of Ferris residents were born in Illinois, 31% were born out of state, 0% were born outside of the United States and 0% were foreign born.