Harris, MO has a population of 47 and is the 28,234th largest city in the United States. The population density is 305 per sq mi which is 253% higher than the Missouri average and 237% higher than the national average. The median age in Harris is 55 which is approximately 43% higher than the Missouri average of 38. In Harris, 62% of the population over 15 years of age are married, 93% speak English and 7% speak Spanish. 72% of Harris residents were born in Missouri, 21% were born out of state, 0% were born outside of the United States and 6% were foreign born.