ZIP Code 45674

45674 is one of Ohio's ZIP codes, delivering to addresses in Rio Grande, Gallia County.

City: Rio Grande
County: Gallia County
State: Ohio
Prefix: 456xx

Where this code sits

45674 is part of the 456xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Rio Grande.

Rio Grande Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45674 delivers to without sharing its boundary.

ZIP codes nearest 45674

The ZIP codes whose reference points sit closest to 45674.
ZIP code	Distance	Delivers to
ZIP code 45685	1.7 mi	Thurman, OH
ZIP code 45643	6.6 mi	Kerr, OH
ZIP code 45614	6.6 mi	Bidwell, OH
ZIP code 45686	6.8 mi	Vinton, OH
ZIP code 45658	7.7 mi	Patriot, OH
ZIP code 45631	9.3 mi	Gallipolis, OH
ZIP code 45656	11 mi	Oak Hill, OH
ZIP code 45688	14 mi	Waterloo, 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 45674, plotted from its record coordinates.

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

Scope ZIP code 45674. 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.