ZIP Code 45420

45420 is one of Ohio's ZIP codes, delivering to addresses in Dayton, Montgomery County.

City: Dayton
County: Montgomery County
State: Ohio
Prefix: 454xx

Where this code sits

45420 is part of the 454xx range, the group of codes handled by one mail processing centre. Dayton is served by 43 ZIP codes in total; the full list, with the county each falls in, is on the Dayton page.

Dayton Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45420 delivers to without sharing its boundary.

ZIP codes nearest 45420

The ZIP codes whose reference points sit closest to 45420.
ZIP code	Distance	Delivers to
ZIP code 45419	1.6 mi	Dayton, OH
ZIP code 45430	1.7 mi	Dayton, OH
ZIP code 45410	2.5 mi	Dayton, OH
ZIP code 45429	2.8 mi	Dayton, OH
ZIP code 45409	2.8 mi	Dayton, OH
ZIP code 45469	2.9 mi	Dayton, OH
ZIP code 45432	3.0 mi	Dayton, OH
ZIP code 45440	3.1 mi	Dayton, 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 45420, plotted from its record coordinates.

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

Scope ZIP code 45420. 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.