ZIP Code 45374

45374 is one of Ohio's ZIP codes, delivering to addresses in Troy, Miami County.

City: Troy
County: Miami County
State: Ohio
Prefix: 453xx

Where this code sits

45374 is part of the 453xx range, the group of codes handled by one mail processing centre. Troy is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Troy page.

Troy Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45374 delivers to without sharing its boundary.

ZIP codes nearest 45374

The ZIP codes whose reference points sit closest to 45374.
ZIP code	Distance	Delivers to
ZIP code 45373	1.4 mi	Troy, OH
ZIP code 45359	6.1 mi	Pleasant Hill, OH
ZIP code 45339	6.6 mi	Ludlow Falls, OH
ZIP code 45312	6.8 mi	Casstown, OH
ZIP code 45371	7.6 mi	Tipp City, OH
ZIP code 45356	7.6 mi	Piqua, OH
ZIP code 45383	7.8 mi	West Milton, OH
ZIP code 45318	8.3 mi	Covington, 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 45374, plotted from its record coordinates.

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

Scope ZIP code 45374. 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.