ZIP Code 45172

45172 is one of Ohio's ZIP codes, delivering to addresses in Sinking Spring, Highland County.

City: Sinking Spring
County: Highland County
State: Ohio
Prefix: 451xx

Where this code sits

45172 is part of the 451xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Sinking Spring.

Sinking Spring Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45172 delivers to without sharing its boundary.

ZIP codes nearest 45172

The ZIP codes whose reference points sit closest to 45172.
ZIP code	Distance	Delivers to
ZIP code 45646	3.1 mi	Latham, OH
ZIP code 45660	6.1 mi	Peebles, OH
ZIP code 45624	7.2 mi	Cynthiana, OH
ZIP code 45612	11 mi	Bainbridge, OH
ZIP code 45671	11 mi	Rarden, OH
ZIP code 45133	14 mi	Hillsboro, OH
ZIP code 45679	14 mi	Seaman, OH
ZIP code 45661	14 mi	Piketon, 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 45172, plotted from its record coordinates.

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

Scope ZIP code 45172. 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.