Excello, MO has a population of 18 and is the 28,830th largest city in the United States. The population density is 53 per sq mi which is 39% lower than the Missouri average and 42% lower than the national average. The median age in Excello is 0 which is approximately 100% lower than the Missouri average of 38. In Excello, 44% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 56% of Excello residents were born in Missouri, 44% were born out of state, 0% were born outside of the United States and 0% were foreign born.