Florissant, MO ZIP codes
Florissant, Missouri has 4 ZIP codes, including 1 PO Box ZIP. They are in St. Louis County.
- Population in these ZIPs
- 112,160
- Avg. median income
- $74,800population-weighted
- Typical home value
- $202,500population-weighted
- Metro area
- St. Louis, MO-IL
Loading map…
Click anywhere on the map to see which ZIP code it's in.
Florissant, MO ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 63031 | St. Louis County | 50,196 | $70,811 | $177,400 |
| 63032 PO Box | St. Louis County | — | — | — |
| 63033 | St. Louis County | 43,056 | $66,776 | $198,800 |
| 63034 | St. Louis County | 18,908 | $103,905 | $277,300 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Florissant
- Hazelwood 2 mi
- Saint Ann 4 mi
- Bridgeton 5 mi
- Maryland Heights 7 mi
- West Alton 9 mi
- Saint Louis 10 mi
- Portage Des Sioux 11 mi
- Saint Charles 11 mi
- Saint Peters 15 mi
- Fenton 15 mi
- Chesterfield 16 mi
- Ballwin 17 mi
Frequently asked questions
What is the ZIP code for Florissant, MO?
Florissant, MO has 4 ZIP codes: 63031, 63032, 63033 and 63034.
What county is Florissant, Missouri in?
Florissant ZIP codes are in St. Louis County.
Which Florissant ZIP codes are PO Boxes?
63032 is a PO Box or single-organization ZIP code; it has no residential delivery area.