ZIP Code 43029

43029 is one of Ohio's ZIP codes, delivering to addresses in Irwin, Union County.

City: Irwin
County: Union County
State: Ohio
Prefix: 430xx

Where this code sits

43029 is part of the 430xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Irwin.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 43029 delivers to without sharing its boundary.

ZIP codes nearest 43029

The ZIP codes whose reference points sit closest to 43029.
ZIP code	Distance	Delivers to
ZIP code 43045	3.9 mi	Milford Center, OH
ZIP code 43084	5.9 mi	Woodstock, OH
ZIP code 43077	6.3 mi	Unionville Center, OH
ZIP code 43044	7.4 mi	Mechanicsburg, OH
ZIP code 43060	8.5 mi	North Lewisburg, OH
ZIP code 43041	8.9 mi	Marysville, OH
ZIP code 43040	9.7 mi	Marysville, OH
ZIP code 43064	10 mi	Plain City, 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 43029, plotted from its record coordinates.

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

Scope ZIP code 43029. 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.