Campus, IL has a population of 129 and is the 26,180th largest city in the United States. The population density is 1,398 per sq mi which is 529% higher than the Illinois average and 1443% higher than the national average. The median age in Campus is 31 which is approximately 18% lower than the Illinois average of 37. In Campus, 56% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 96% of Campus residents were born in Illinois, 4% were born out of state, 0% were born outside of the United States and 0% were foreign born.