ZIP Code 43346

43346 is one of Ohio's ZIP codes, delivering to addresses in Roundhead, Hardin County.

City: Roundhead
County: Hardin County
State: Ohio
Prefix: 433xx

Where this code sits

43346 is part of the 433xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Roundhead.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 43346 delivers to without sharing its boundary.

ZIP codes nearest 43346

The ZIP codes whose reference points sit closest to 43346.
ZIP code	Distance	Delivers to
ZIP code 45870	5.6 mi	New Hampshire, OH
ZIP code 43331	6.3 mi	Lakeview, OH
ZIP code 45896	6.3 mi	Waynesfield, OH
ZIP code 43310	6.4 mi	Belle Center, OH
ZIP code 43348	7.6 mi	Russells Point, OH
ZIP code 45859	8.3 mi	Mc Guffey, OH
ZIP code 45812	9.2 mi	Alger, OH
ZIP code 43324	9.5 mi	Huntsville, 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 43346, plotted from its record coordinates.

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

Scope ZIP code 43346. 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.