Census place · GEOID 2924778 · St. Louis County
Florissant, MO ZIP codes
2 ZIP/ZCTAs intersecting this Census place in St. Louis County.
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Florissant (GEOID 2924778). Methodology
Combined population of ZIP/ZCTAs intersecting this place: 92,516 (2 ZIPs).
Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology
Map of Florissant, MO

ZIP/ZCTA overlap with Florissant
Population overlap
Share of each ZIP/ZCTA’s population located within Florissant, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
ZIP codes intersecting Florissant
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 63031 | Florissant | St. Louis County | 50,258 | $71,783 |
| 63033 | Florissant | St. Louis County | 42,258 | $63,979 |
USPS associates these ZIPs with Florissant
These codes list Florissant as a primary or acceptable city. They are not used for the ACS headline.
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 63032 | Florissant | St. Louis County | 628 | — |
| 63034 | Florissant | St. Louis County | 19,557 | $110,491 |