ZIP Code 18843

18843 is one of Pennsylvania's ZIP codes, delivering to addresses in South Montrose, Susquehanna County.

City: South Montrose
County: Susquehanna County
State: Pennsylvania
Prefix: 188xx

Where this code sits

18843 is part of the 188xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to South Montrose.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 18843 delivers to without sharing its boundary.

ZIP codes nearest 18843

The ZIP codes whose reference points sit closest to 18843.
ZIP code	Distance	Delivers to
ZIP code 18801	3.0 mi	Montrose, PA
ZIP code 18816	3.5 mi	Dimock, PA
ZIP code 18825	4.7 mi	Jackson, PA
ZIP code 18813	5.4 mi	Brooklyn, PA
ZIP code 18844	5.7 mi	Springville, PA
ZIP code 18826	6.0 mi	Kingsley, PA
ZIP code 18824	8.9 mi	Hop Bottom, PA
ZIP code 18834	10 mi	New Milford, 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 18843, plotted from its record coordinates.

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

Scope ZIP code 18843. 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.