In which county is ZIP code 18331 located?

ZIP 18331 is listed under Monroe, PA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 18331: Gilbert, PA

ZIP: 18331

County: Monroe

Coordinates: 40.90890, -75.43140

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 18331 in Gilbert, PA. We include verified county details for Monroe plus key geographic references used for mapping and logistics.

Primary City	Gilbert
ZIP Code	18331
County	Monroe
State	PA
Latitude / Longitude	40.90890, -75.43140
ZIP Type	Standard
Time Zone	Eastern Time (ET)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 18331 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 18331 are listed as 40.90890 / -75.43140, useful for GPS and service checks in and around Gilbert, PA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 18331 for mail delivery and general location reference in Monroe, PA.

This ZIP may extend beyond the city core into nearby communities within Monroe.

Related ZIP Codes (Nearby)

Explore other postal codes near Gilbert within PA.

Frequently Asked Questions

What is the primary city for ZIP code 18331?

The primary city for this ZIP code is Gilbert, located in PA.

In which county is 18331 located?

ZIP code 18331 is situated within Monroe, PA.

What are the coordinates for 18331?

The approximate center point is 40.90890 (Latitude) and -75.43140 (Longitude).

Is ZIP code 18331 active?

This page lists ZIP 18331 as Listed based on the latest refresh date shown above.

Does ZIP 18331 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