Mooresville, MO has a population of 142 and is the 25,855th largest city in the United States. The population density is 792 per sq mi which is 817% higher than the Missouri average and 774% higher than the national average. The median age in Mooresville is 30 which is approximately 21% lower than the Missouri average of 38. In Mooresville, 46% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 80% of Mooresville residents were born in Missouri, 20% were born out of state, 0% were born outside of the United States and 0% were foreign born.