ZIP Code 45843

45843 is one of Ohio's ZIP codes, delivering to addresses in Forest, Hardin County.

City: Forest
County: Hardin County
State: Ohio
Prefix: 458xx

Where this code sits

45843 is part of the 458xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Forest.

Forest Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45843 delivers to without sharing its boundary.

ZIP codes nearest 45843

The ZIP codes whose reference points sit closest to 45843.
ZIP code	Distance	Delivers to
ZIP code 45836	5.2 mi	Dunkirk, OH
ZIP code 43330	6.4 mi	Kirby, OH
ZIP code 43359	6.7 mi	Wharton, OH
ZIP code 45897	7.1 mi	Williamstown, OH
ZIP code 45867	7.8 mi	Mount Blanchard, OH
ZIP code 45835	8.8 mi	Dola, OH
ZIP code 45814	9.6 mi	Arlington, OH
ZIP code 43326	11 mi	Kenton, OH

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 45843, plotted from its record coordinates.

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

Scope ZIP code 45843. 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.