ZIP Code 45171

45171 is one of Ohio's ZIP codes, delivering to addresses in Sardinia, Brown County.

City: Sardinia
County: Brown County
State: Ohio
Prefix: 451xx

Where this code sits

45171 is part of the 451xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Sardinia.

Sardinia Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45171 delivers to without sharing its boundary.

ZIP codes nearest 45171

The ZIP codes whose reference points sit closest to 45171.
ZIP code	Distance	Delivers to
ZIP code 45155	4.6 mi	Mowrystown, OH
ZIP code 45697	7.8 mi	Winchester, OH
ZIP code 45154	9.2 mi	Mount Orab, OH
ZIP code 45168	9.3 mi	Russellville, OH
ZIP code 45121	9.8 mi	Georgetown, OH
ZIP code 45679	11 mi	Seaman, OH
ZIP code 45618	11 mi	Cherry Fork, OH
ZIP code 45130	11 mi	Hamersville, 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 45171, plotted from its record coordinates.

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

Scope ZIP code 45171. 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.