ZIP Code 45342

45342 is one of Ohio's ZIP codes, delivering to addresses in Miamisburg, Montgomery County.

City: Miamisburg
County: Montgomery County
State: Ohio
Prefix: 453xx

Where this code sits

45342 is part of the 453xx range, the group of codes handled by one mail processing centre. Miamisburg is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Miamisburg page.

Miamisburg Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45342 delivers to without sharing its boundary.

ZIP codes nearest 45342

The ZIP codes whose reference points sit closest to 45342.
ZIP code	Distance	Delivers to
ZIP code 45449	2.7 mi	Dayton, OH
ZIP code 45459	5.2 mi	Dayton, OH
ZIP code 45066	5.2 mi	Springboro, OH
ZIP code 45439	5.4 mi	Dayton, OH
ZIP code 45458	5.5 mi	Dayton, OH
ZIP code 45327	5.8 mi	Germantown, OH
ZIP code 45429	6.6 mi	Dayton, OH
ZIP code 45005	6.9 mi	Franklin, 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 45342, plotted from its record coordinates.

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

Scope ZIP code 45342. 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.