Florissant, MO ZIP Codes
Florissant, Missouri has 4 ZIP codes: 3 for street addresses (, and ) and 1 for PO boxes ().
Your street decides which one you use.
Which Florissant ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Florissant ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
63032 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: Florissant city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Florissant ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 63031 | street delivery Carr |
| 63032 | PO boxes at the Florissant post office Florissant |
| 63033 | street delivery Florissant |
| 63034 | street delivery Florissant |
Why your mail may say Florissant when you live outside it
Florissant ZIP codes also cover Old Jamestown, Hazelwood and Black Jack, so a letter addressed to Florissant can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. St. Louis County property records show which city you are in.
Florissant ZIP code questions
What is the main ZIP code for Florissant?
63033, the ZIP code of the main Florissant post office at 2200 N Highway 67.
Which Florissant ZIP codes are for PO boxes only?
63032. Mail to it goes to boxes at the post office, not to street addresses.
What county is Florissant in?
St. Louis County.
ZIP codes for towns near Florissant
More towns near Florissant: O'Fallon, Wildwood, Oakville, O'Fallon, Belleville, Wentzville, Springfield, Quincy, Jefferson City.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections