Claremont, IL has a population of 272 and is the 22,982nd largest city in the United States. The population density is 340 per sq mi which is 53% higher than the Illinois average and 275% higher than the national average. The median age in Claremont is 34 which is approximately 8% lower than the Illinois average of 37. In Claremont, 69% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 73% of Claremont residents were born in Illinois, 26% were born out of state, 1% were born outside of the United States and 0% were foreign born.