Crainville, IL has a population of 1,456 and is the 12,870th largest city in the United States. The population density is 862 per sq mi which is 288% higher than the Illinois average and 851% higher than the national average. The median age in Crainville is 36 which is approximately 3% lower than the Illinois average of 37. In Crainville, 60% of the population over 15 years of age are married, 96% speak English and 0% speak Spanish. 74% of Crainville residents were born in Illinois, 22% were born out of state, 1% were born outside of the United States and 3% were foreign born.