Mount Vernon is a city located in Illinois. With a 2020 population of 14,721, it is the 163rd largest city in Illinois and the 2335th largest city in the United States. Mount Vernon is currently declining at a rate of -0.43% annually and its population has decreased by -3.64% since the most recent census, which recorded a population of 15,277 in 2010. Mount Vernon reached it's highest population of 17,193 in 1980. Spanning over 15 miles, Mount Vernon has a population density of 1,010 people per square mile.
The average household income in Mount Vernon is $56,771 with a poverty rate of 24.42%. The median rental costs in recent years comes to $674 per month, and the median house value is $76,600. The median age in Mount Vernon is 38.9 years, 36.1 years for males, and 40.7 years for females. For every 100 females there are 84.3 males.