In which county is ZIP code 63631 located?

ZIP 63631 is listed under Washington, MO.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 63631: Caledonia, MO

ZIP: 63631

County: Washington

Coordinates: 37.76390, -90.74090

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Caledonia, MO postal area 63631. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Caledonia
ZIP Code	63631
County	Washington
State	MO
Latitude / Longitude	37.76390, -90.74090
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 63631 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 63631 are listed as 37.76390 / -90.74090, useful for GPS and service checks in and around Caledonia, MO.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 63631 for mail delivery and general location reference in Washington, MO.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Caledonia.

Related ZIP Codes (Nearby)

Explore other postal codes near Caledonia within MO.

Frequently Asked Questions

What is the primary city for ZIP code 63631?

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

In which county is 63631 located?

ZIP code 63631 is situated within Washington, MO.

What are the coordinates for 63631?

The approximate center point is 37.76390 (Latitude) and -90.74090 (Longitude).

Is ZIP code 63631 active?

This page lists ZIP 63631 as Listed based on the latest refresh date shown above.

Does ZIP 63631 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