Willard, MO has a population of 5,447 and is the 6,104th largest city in the United States. The population density is 919 per sq mi which is 964% higher than the Missouri average and 914% higher than the national average. The median age in Willard is 36 which is approximately 7% lower than the Missouri average of 38. In Willard, 66% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 64% of Willard residents were born in Missouri, 34% were born out of state, 1% were born outside of the United States and 1% were foreign born.