Moline, IL has a population of 42,805 and is the 957th largest city in the United States. The population density is 2,555 per sq mi which is 1049% higher than the Illinois average and 2720% higher than the national average. The median age in Moline is 39 which is approximately 5% higher than the Illinois average of 37. In Moline, 57% of the population over 15 years of age are married, 82% speak English and 12% speak Spanish. 64% of Moline residents were born in Illinois, 25% were born out of state, 1% were born outside of the United States and 10% were foreign born.