Henrietta, MO has a population of 345 and is the 21,697th largest city in the United States. The population density is 591 per sq mi which is 584% higher than the Missouri average and 552% higher than the national average. The median age in Henrietta is 44 which is approximately 15% higher than the Missouri average of 38. In Henrietta, 54% of the population over 15 years of age are married, 94% speak English and 0% speak Spanish. 79% of Henrietta residents were born in Missouri, 16% were born out of state, 0% were born outside of the United States and 5% were foreign born.