Capron, IL has a population of 1,868 and is the 11,427th largest city in the United States. The population density is 2,411 per sq mi which is 984% higher than the Illinois average and 2561% higher than the national average. The median age in Capron is 33 which is approximately 12% lower than the Illinois average of 37. In Capron, 48% of the population over 15 years of age are married, 57% speak English and 43% speak Spanish. 59% of Capron residents were born in Illinois, 22% were born out of state, 0% were born outside of the United States and 19% were foreign born.