Earlville, IL has a population of 1,672 and is the 12,071st largest city in the United States. The population density is 1,392 per sq mi which is 526% higher than the Illinois average and 1436% higher than the national average. The median age in Earlville is 41 which is approximately 10% higher than the Illinois average of 37. In Earlville, 61% of the population over 15 years of age are married, 95% speak English and 4% speak Spanish. 83% of Earlville residents were born in Illinois, 15% were born out of state, 0% were born outside of the United States and 2% were foreign born.