Marble Hill, MO has a population of 1,721 and is the 11,915th largest city in the United States. The population density is 1,040 per sq mi which is 1104% higher than the Missouri average and 1048% higher than the national average. The median age in Marble Hill is 36 which is approximately 6% lower than the Missouri average of 38. In Marble Hill, 54% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 72% of Marble Hill residents were born in Missouri, 28% were born out of state, 0% were born outside of the United States and 1% were foreign born.