ZIP Code 45203

45203 is one of Ohio's ZIP codes, delivering to addresses in Cincinnati, Hamilton County.

City: Cincinnati
County: Hamilton County
State: Ohio
Prefix: 452xx

Where this code sits

45203 is part of the 452xx range, the group of codes handled by one mail processing centre. Cincinnati is served by 71 ZIP codes in total; the full list, with the county each falls in, is on the Cincinnati page.

Cincinnati Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45203 delivers to without sharing its boundary.

ZIP codes nearest 45203

The ZIP codes whose reference points sit closest to 45203.
ZIP code	Distance	Delivers to
ZIP code 45202	1.3 mi	Cincinnati, OH
ZIP code 45219	1.5 mi	Cincinnati, OH
ZIP code 45214	1.7 mi	Cincinnati, OH
ZIP code 41016	1.9 mi	Covington, KY
ZIP code 45220	2.5 mi	Cincinnati, OH
ZIP code 41073	2.5 mi	Bellevue, KY
ZIP code 45206	2.5 mi	Cincinnati, OH
ZIP code 41011	2.5 mi	Covington, KY

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 45203, plotted from its record coordinates.

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

Scope ZIP code 45203. 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.