In which county is ZIP code 19731 located?

ZIP 19731 is listed under New Castle, DE.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 19731: Port Penn, DE

ZIP: 19731

County: New Castle

Coordinates: 39.51290, -75.58520

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 19731 in Port Penn, DE. We include verified county details for New Castle plus key geographic references used for mapping and logistics.

Primary City	Port Penn
ZIP Code	19731
County	New Castle
State	DE
Latitude / Longitude	39.51290, -75.58520
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 19731 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 19731 are listed as 39.51290 / -75.58520, useful for GPS and service checks in and around Port Penn, DE.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 19731 for mail delivery and general location reference in New Castle, DE.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Port Penn within DE.

Frequently Asked Questions

What is the primary city for ZIP code 19731?

The primary city for this ZIP code is Port Penn, located in DE.

In which county is 19731 located?

ZIP code 19731 is situated within New Castle, DE.

What are the coordinates for 19731?

The approximate center point is 39.51290 (Latitude) and -75.58520 (Longitude).

Is ZIP code 19731 active?

This page lists ZIP 19731 as Listed based on the latest refresh date shown above.

Does ZIP 19731 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