ZIP Code 45133

45133 is one of Ohio's ZIP codes, delivering to addresses in Hillsboro, Highland County.

City: Hillsboro
County: Highland County
State: Ohio
Prefix: 451xx

Where this code sits

45133 is part of the 451xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hillsboro.

Hillsboro Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45133 delivers to without sharing its boundary.

ZIP codes nearest 45133

The ZIP codes whose reference points sit closest to 45133.
ZIP code	Distance	Delivers to
ZIP code 45142	11 mi	Lynchburg, OH
ZIP code 45155	12 mi	Mowrystown, OH
ZIP code 45159	12 mi	New Vienna, OH
ZIP code 45132	12 mi	Highland, OH
ZIP code 45135	13 mi	Leesburg, OH
ZIP code 45172	14 mi	Sinking Spring, OH
ZIP code 45624	14 mi	Cynthiana, OH
ZIP code 45679	14 mi	Seaman, 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 45133, plotted from its record coordinates.

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

Scope ZIP code 45133. 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.