Mount Vernon is a city located in Missouri. With a 2020 population of 4,534, it is the 146th largest city in Missouri and the 5031st largest city in the United States. Mount Vernon is currently growing at a rate of 0.27% annually but its population has decreased by -0.90% since the most recent census, which recorded a population of 4,575 in 2010. Mount Vernon reached it's highest population of 4,558 in 2010. Spanning over 4 miles, Mount Vernon has a population density of 1,141 people per square mile.
The average household income in Mount Vernon is $48,811 with a poverty rate of 14.80%. The median rental costs in recent years comes to $671 per month, and the median house value is $99,800. The median age in Mount Vernon is 46.6 years, 44.3 years for males, and 48.2 years for females. For every 100 females there are 99.5 males.