Chapin, IL has a population of 479 and is the 19,802nd largest city in the United States. The population density is 492 per sq mi which is 121% higher than the Illinois average and 443% higher than the national average. The median age in Chapin is 43 which is approximately 16% higher than the Illinois average of 37. In Chapin, 62% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 89% of Chapin residents were born in Illinois, 10% were born out of state, 1% were born outside of the United States and 0% were foreign born.
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The population density in Chapin is 121% higher than Illinois.
The median age in Chapin is 16% higher than Illinois.
In Chapin 98.96% of the population is White.
In Chapin 0.00% of the population is Black or African American.