ZIP Code 45050

45050 is one of Ohio's ZIP codes, delivering to addresses in Monroe, Butler County.

City: Monroe
County: Butler County
State: Ohio
Prefix: 450xx

Where this code sits

45050 is part of the 450xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Monroe.

Monroe Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45050 delivers to without sharing its boundary.

ZIP codes nearest 45050

The ZIP codes whose reference points sit closest to 45050.
ZIP code	Distance	Delivers to
ZIP code 45044	5.4 mi	Middletown, OH
ZIP code 45067	5.7 mi	Trenton, OH
ZIP code 45042	6.4 mi	Middletown, OH
ZIP code 45069	7.2 mi	West Chester, OH
ZIP code 45005	7.3 mi	Franklin, OH
ZIP code 45040	7.8 mi	Mason, OH
ZIP code 45071	7.9 mi	West Chester, OH
ZIP code 45055	8.0 mi	Overpeck, 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 45050, plotted from its record coordinates.

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

Scope ZIP code 45050. 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.