Florissant, Missouri

Florissant population, 2020 to 2024

Florissant lost 1,169 residents from July 2020 to July 2024, a change of -2.2%. In the latest year it moved by -33. Among 135 Missouri places of 5,000 or more, that growth ranks 121st; the median place changed by +1.2%. The median place of 5,000+ in Missouri has 12,239 people, so Florissant is 4.2 times that size.

Florissant covers 12.55 square miles of land and 0.31 of water, for 4,087 people per square mile of land. The median Missouri place of 5,000+ has 1,448, so Florissant is denser than the typical town.

What county Florissant is in

All of Florissant's residents live in St. Louis County, which had 992,929 residents in 2024. Florissant holds 5.2% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Florissant

2 ZIP Code Tabulation Areas (ZCTAs) overlap Florissant by at least 10% of the ZCTA's or the city's land: 63031, 63033. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Florissant is

The Census internal point of Florissant is at 38.799700, -90.327100. Jefferson City, the capital, is 100.7 miles W in a straight line. The nearest larger place is St. Charles, MO (72,458 people), 10.1 miles away. The nearest city of 100,000 or more is St. Louis, MO, 12.2 miles away.

Daylight in Florissant

At 38.80° N, Florissant gets about 14 h 53 min of daylight around the June solstice and 9 h 27 min around the December solstice, a swing of 5 h 26 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Florissant

The eight nearest incorporated places of 1,000+ in Missouri, measured between internal points. The closest is Calverton Park, 2.5 miles away, with 1,134 people.