Ellisville, MO has a population of 9,188 and is the 4,198th largest city in the United States. The population density is 2,092 per sq mi which is 2322% higher than the Missouri average and 2209% higher than the national average. The median age in Ellisville is 45 which is approximately 17% higher than the Missouri average of 38. In Ellisville, 66% of the population over 15 years of age are married, 93% speak English and 2% speak Spanish. 64% of Ellisville residents were born in Missouri, 31% were born out of state, 1% were born outside of the United States and 4% were foreign born.