Florissant is a city located in Missouri. With a 2020 population of 50,750, it is the 13th largest city in Missouri and the 781st largest city in the United States. Florissant is currently declining at a rate of -0.51% annually and its population has decreased by -2.70% since the most recent census, which recorded a population of 52,158 in 2010. Florissant reached it's highest population of 65,908 in 1970. Spanning over 13 miles, Florissant has a population density of 4,044 people per square mile.
The average household income in Florissant is $63,615 with a poverty rate of 9.93%. The median rental costs in recent years comes to $998 per month, and the median house value is $96,400. The median age in Florissant is 35.5 years, 34.3 years for males, and 37.1 years for females. For every 100 females there are 82.0 males.