ZIP Code 45303

45303 is one of Ohio's ZIP codes, delivering to addresses in Ansonia, Darke County.

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

Where this code sits

45303 is part of the 453xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Ansonia.

Ansonia Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45303 delivers to without sharing its boundary.

ZIP codes nearest 45303

The ZIP codes whose reference points sit closest to 45303.
ZIP code	Distance	Delivers to
ZIP code 45362	5.5 mi	Rossburg, OH
ZIP code 45390	7.6 mi	Union City, OH
ZIP code 45380	7.7 mi	Versailles, OH
ZIP code 45331	8.0 mi	Greenville, OH
ZIP code 45348	8.3 mi	New Weston, OH
ZIP code 45350	8.3 mi	North Star, OH
ZIP code 45310	9.6 mi	Burkettsville, OH
ZIP code 47390	9.9 mi	Union City, IN

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 45303, plotted from its record coordinates.

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

Scope ZIP code 45303. 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.