In which county is ZIP code 17123 located?

ZIP 17123 is listed under Dauphin, PA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 17123: Harrisburg, PA

ZIP: 17123

County: Dauphin

Coordinates: 40.26750, -76.88370

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Harrisburg, PA postal area 17123. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Harrisburg
ZIP Code	17123
County	Dauphin
State	PA
Latitude / Longitude	40.26750, -76.88370
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 17123 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 17123 is commonly represented around 40.26750, -76.88370. These coordinates help identify the general area within Dauphin, PA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 17123 for mail delivery and general location reference in Dauphin, PA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Harrisburg within PA.

Frequently Asked Questions

What is the primary city for ZIP code 17123?

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

In which county is 17123 located?

ZIP code 17123 is situated within Dauphin, PA.

What are the coordinates for 17123?

The approximate center point is 40.26750 (Latitude) and -76.88370 (Longitude).

Is ZIP code 17123 active?

This page lists ZIP 17123 as Listed based on the latest refresh date shown above.

Does ZIP 17123 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