ZIP Code 45888

45888 is one of Ohio's ZIP codes, delivering to addresses in Uniopolis, Auglaize County.

City: Uniopolis
County: Auglaize County
State: Ohio
Prefix: 458xx

Where this code sits

45888 is part of the 458xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Uniopolis.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45888 delivers to without sharing its boundary.

ZIP codes nearest 45888

The ZIP codes whose reference points sit closest to 45888.
ZIP code	Distance	Delivers to
ZIP code 45884	3.2 mi	Saint Johns, OH
ZIP code 45895	5.3 mi	Wapakoneta, OH
ZIP code 45806	5.4 mi	Lima, OH
ZIP code 45896	6.7 mi	Waynesfield, OH
ZIP code 45870	7.7 mi	New Hampshire, OH
ZIP code 45804	8.7 mi	Lima, OH
ZIP code 45819	9.3 mi	Buckland, OH
ZIP code 45805	10 mi	Lima, 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 45888, plotted from its record coordinates.

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

Scope ZIP code 45888. 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.