Earlville, IA has a population of 835 and is the 16,305th largest city in the United States. The population density is 1,511 per sq mi which is 2666% higher than the Iowa average and 1568% higher than the national average. The median age in Earlville is 45 which is approximately 19% higher than the Iowa average of 38. In Earlville, 67% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 87% of Earlville residents were born in Iowa, 11% were born out of state, 0% were born outside of the United States and 1% were foreign born.