ZIP Code 45390

45390 is one of Ohio's ZIP codes, delivering to addresses in Union City, Darke County.

City: Union City
County: Darke County
State: Ohio
Prefix: 453xx

Where this code sits

45390 is part of the 453xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Union City.

Union City Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45390 delivers to without sharing its boundary.

ZIP codes nearest 45390

The ZIP codes whose reference points sit closest to 45390.
ZIP code	Distance	Delivers to
ZIP code 47390	2.3 mi	Union City, IN
ZIP code 47382	7.5 mi	Saratoga, IN
ZIP code 45303	7.6 mi	Ansonia, OH
ZIP code 45362	11 mi	Rossburg, OH
ZIP code 45331	11 mi	Greenville, OH
ZIP code 45352	11 mi	Palestine, OH
ZIP code 47394	12 mi	Winchester, IN
ZIP code 45348	12 mi	New Weston, 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 45390, plotted from its record coordinates.

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

Scope ZIP code 45390. 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.