Muscatine, IA has a population of 23,909 and is the 1,826th largest city in the United States. The population density is 1,316 per sq mi which is 2310% higher than the Iowa average and 1353% higher than the national average. The median age in Muscatine is 36 which is approximately 7% lower than the Iowa average of 38. In Muscatine, 55% of the population over 15 years of age are married, 85% speak English and 12% speak Spanish. 70% of Muscatine residents were born in Iowa, 21% were born out of state, 2% were born outside of the United States and 7% were foreign born.