In which county is ZIP code 63031 located?

ZIP 63031 is listed under St. Louis, MO.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 63031: Florissant, MO

ZIP: 63031

County: St. Louis

Coordinates: 38.80690, -90.34010

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Florissant, MO postal area 63031. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Florissant
ZIP Code	63031
County	St. Louis
State	MO
Latitude / Longitude	38.80690, -90.34010
ZIP Type	Standard
Time Zone	Central Time (CT)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 63031 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 63031 are listed as 38.80690 / -90.34010, useful for GPS and service checks in and around Florissant, MO.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 63031 for mail delivery and general location reference in St. Louis, MO.

Some addresses near Florissant may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Florissant within MO.

Frequently Asked Questions

What is the primary city for ZIP code 63031?

The primary city for this ZIP code is Florissant, located in MO.

In which county is 63031 located?

ZIP code 63031 is situated within St. Louis, MO.

What are the coordinates for 63031?

The approximate center point is 38.80690 (Latitude) and -90.34010 (Longitude).

Is ZIP code 63031 active?

This page lists ZIP 63031 as Listed based on the latest refresh date shown above.

Does ZIP 63031 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

Methodology & Data Notes

How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.

Page updated: 2026-01-08