ZIP Code 45320

45320 is one of Ohio's ZIP codes, delivering to addresses in Eaton, Preble County.

City: Eaton
County: Preble County
State: Ohio
Prefix: 453xx

Where this code sits

45320 is part of the 453xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Eaton.

Eaton Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45320 delivers to without sharing its boundary.

ZIP codes nearest 45320

The ZIP codes whose reference points sit closest to 45320.
ZIP code	Distance	Delivers to
ZIP code 45381	6.2 mi	West Alexandria, OH
ZIP code 45311	9.2 mi	Camden, OH
ZIP code 45330	9.2 mi	Gratis, OH
ZIP code 45338	9.8 mi	Lewisburg, OH
ZIP code 45321	10 mi	Eldorado, OH
ZIP code 47324	11 mi	Boston, IN
ZIP code 45347	11 mi	New Paris, OH
ZIP code 45382	11 mi	West Manchester, 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 45320, plotted from its record coordinates.

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

Scope ZIP code 45320. 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.