ZIP Code 16660

16660 is one of Pennsylvania's ZIP codes, delivering to addresses in Mc Connellstown, Huntingdon County.

City: Mc Connellstown
County: Huntingdon County
State: Pennsylvania
Prefix: 166xx

Where this code sits

16660 is part of the 166xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mc Connellstown.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 16660 delivers to without sharing its boundary.

ZIP codes nearest 16660

The ZIP codes whose reference points sit closest to 16660.
ZIP code	Distance	Delivers to
ZIP code 17052	1.2 mi	Mapleton Depot, PA
ZIP code 17066	5.5 mi	Mount Union, PA
ZIP code 16622	5.5 mi	Calvin, PA
ZIP code 17060	5.8 mi	Mill Creek, PA
ZIP code 16654	6.1 mi	Huntingdon, PA
ZIP code 17075	7.2 mi	Newton Hamilton, PA
ZIP code 16652	7.2 mi	Huntingdon, PA
ZIP code 16623	8.1 mi	Cassville, PA

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 16660, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 16660. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.