ZIP Code 18923

18923 is one of Pennsylvania's ZIP codes, delivering to addresses in Fountainville, Bucks County.

City: Fountainville
County: Bucks County
State: Pennsylvania
Prefix: 189xx

Where this code sits

18923 is part of the 189xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Fountainville.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 18923 delivers to without sharing its boundary.

ZIP codes nearest 18923

The ZIP codes whose reference points sit closest to 18923.
ZIP code	Distance	Delivers to
ZIP code 18916	2.0 mi	Danboro, PA
ZIP code 18917	2.1 mi	Dublin, PA
ZIP code 18949	2.6 mi	Plumsteadville, PA
ZIP code 18901	3.8 mi	Doylestown, PA
ZIP code 18902	4.0 mi	Doylestown, PA
ZIP code 18931	4.1 mi	Lahaska, PA
ZIP code 18933	4.1 mi	Lumberville, PA
ZIP code 18991	4.1 mi	Warminster, 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 18923, plotted from its record coordinates.

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

Scope ZIP code 18923. 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.