Piedmont, MO has a population of 2,401 and is the 10,059th largest city in the United States. The population density is 1,124 per sq mi which is 1201% higher than the Missouri average and 1140% higher than the national average. The median age in Piedmont is 41 which is approximately 6% higher than the Missouri average of 38. In Piedmont, 54% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 79% of Piedmont residents were born in Missouri, 20% were born out of state, 1% were born outside of the United States and 0% were foreign born.