Pleasant Valley, MO has a population of 3,043 and is the 8,745th largest city in the United States. The population density is 2,424 per sq mi which is 2706% higher than the Missouri average and 2576% higher than the national average. The median age in Pleasant Valley is 41 which is approximately 7% higher than the Missouri average of 38. In Pleasant Valley, 53% of the population over 15 years of age are married, 96% speak English and 2% speak Spanish. 62% of Pleasant Valley residents were born in Missouri, 35% were born out of state, 1% were born outside of the United States and 1% were foreign born.