ZIP Code 42320

42320 is one of Kentucky's ZIP codes, delivering to addresses in Beaver Dam, Ohio County.

City: Beaver Dam
County: Ohio County
State: Kentucky
Prefix: 423xx

Where this code sits

42320 is part of the 423xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Beaver Dam.

Beaver Dam Kentucky ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 42320 delivers to without sharing its boundary.

ZIP codes nearest 42320

The ZIP codes whose reference points sit closest to 42320.
ZIP code	Distance	Delivers to
ZIP code 42354	3.2 mi	Mc Henry, KY
ZIP code 42333	6.5 mi	Cromwell, KY
ZIP code 42347	6.8 mi	Hartford, KY
ZIP code 42328	7.6 mi	Centertown, KY
ZIP code 42369	7.7 mi	Rockport, KY
ZIP code 42370	8.5 mi	Rosine, KY
ZIP code 42349	9.9 mi	Horse Branch, KY
ZIP code 42338	13 mi	Dundee, KY

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 42320, plotted from its record coordinates.

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

Scope ZIP code 42320. 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.