In which county is ZIP code 16635 located?

ZIP 16635 is listed under Blair, PA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 16635: Duncansville, PA

ZIP: 16635

County: Blair

Coordinates: 40.42620, -78.43830

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 16635 in Duncansville, PA. We include verified county details for Blair plus key geographic references used for mapping and logistics.

Primary City	Duncansville
ZIP Code	16635
County	Blair
State	PA
Latitude / Longitude	40.42620, -78.43830
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 16635 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 16635 is commonly represented around 40.42620, -78.43830. These coordinates help identify the general area within Blair, PA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 16635 for mail delivery and general location reference in Blair, PA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Duncansville within PA.

Frequently Asked Questions

What is the primary city for ZIP code 16635?

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

In which county is 16635 located?

ZIP code 16635 is situated within Blair, PA.

What are the coordinates for 16635?

The approximate center point is 40.42620 (Latitude) and -78.43830 (Longitude).

Is ZIP code 16635 active?

This page lists ZIP 16635 as Listed based on the latest refresh date shown above.

Does ZIP 16635 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