ZIP Code 45688

45688 is one of Ohio's ZIP codes, delivering to addresses in Waterloo, Lawrence County.

City: Waterloo
County: Lawrence County
State: Ohio
Prefix: 456xx

Where this code sits

45688 is part of the 456xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Waterloo.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45688 delivers to without sharing its boundary.

ZIP codes nearest 45688

The ZIP codes whose reference points sit closest to 45688.
ZIP code	Distance	Delivers to
ZIP code 45658	6.3 mi	Patriot, OH
ZIP code 45659	8.4 mi	Pedro, OH
ZIP code 45696	9.3 mi	Willow Wood, OH
ZIP code 45645	11 mi	Kitts Hill, OH
ZIP code 45678	11 mi	Scottown, OH
ZIP code 45685	12 mi	Thurman, OH
ZIP code 45675	13 mi	Rock Camp, OH
ZIP code 45656	13 mi	Oak Hill, 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 45688, plotted from its record coordinates.

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

Scope ZIP code 45688. 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.