Florissant is a city in St. Louis County, Missouri, within Greater St. Louis. It is a center class, second-ring northern suburb of St. Louis. Based upon the 2020 United States census, the city had a total population of 52,533, making it the 12th-largest city in Missouri and the largest municipality in St. Louis County.

The exact date the first settlers went to the Valley of Florissant is unknown, but it is one of the oldest settlements in the disclose of Missouri. Some historians tolerate it was fixed about the similar time as St. Louis. The first civil organization was formed in 1786. Spanish history in Havana publicize 40 people and seven plantations were in Florissant at the mature of the 1787 census. The village, called “Fleurissant”, meaning “Blooming” in English, by its French settlers and “St. Ferdinand” by its Spanish rulers, was a typical French village taking into account its commons and common fields. Originally a surgically remove town, and now an inner suburb of St. Louis, the community was centered on (and frequently called after) the parish of St. Ferdinand.

In c. 1809, the Cold Water Cemetery had the first burial, since 2004 it has been listed in the National Register of Historic Places for its social history.

As late as 1889, the town was predominantly French-speaking (while the southern ration of the metropolis was populated by German-speakers). The first train parentage to the Place was constructed in 1878—an development of the extraction which went from St. Louis City to Normandy. The last train to Florissant ran upon November 14, 1931.