Hamilton, MO has a population of 1,747 and is the 11,821st largest city in the United States. The population density is 1,245 per sq mi which is 1341% higher than the Missouri average and 1274% higher than the national average. The median age in Hamilton is 43 which is approximately 13% higher than the Missouri average of 38. In Hamilton, 57% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 79% of Hamilton residents were born in Missouri, 21% were born out of state, 0% were born outside of the United States and 0% were foreign born.