ZIP Code 43066

43066 is one of Ohio's ZIP codes, delivering to addresses in Radnor, Delaware County.

City: Radnor
County: Delaware County
State: Ohio
Prefix: 430xx

Where this code sits

43066 is part of the 430xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Radnor.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 43066 delivers to without sharing its boundary.

ZIP codes nearest 43066

The ZIP codes whose reference points sit closest to 43066.
ZIP code	Distance	Delivers to
ZIP code 43036	5.2 mi	Magnetic Springs, OH
ZIP code 43342	5.6 mi	Prospect, OH
ZIP code 43356	7.4 mi	Waldo, OH
ZIP code 43344	7.8 mi	Richwood, OH
ZIP code 43061	8.2 mi	Ostrander, OH
ZIP code 43015	8.8 mi	Delaware, OH
ZIP code 43322	9.8 mi	Green Camp, OH
ZIP code 43003	12 mi	Ashley, 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 43066, plotted from its record coordinates.

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

Scope ZIP code 43066. 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.