ZIP Code 45646

45646 is one of Ohio's ZIP codes, delivering to addresses in Latham, Pike County.

City: Latham
County: Pike County
State: Ohio
Prefix: 456xx

Where this code sits

45646 is part of the 456xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Latham.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 45646 delivers to without sharing its boundary.

ZIP codes nearest 45646

The ZIP codes whose reference points sit closest to 45646.
ZIP code	Distance	Delivers to
ZIP code 45172	3.1 mi	Sinking Spring, OH
ZIP code 45624	6.5 mi	Cynthiana, OH
ZIP code 45660	6.8 mi	Peebles, OH
ZIP code 45612	9.6 mi	Bainbridge, OH
ZIP code 45671	9.8 mi	Rarden, OH
ZIP code 45661	11 mi	Piketon, OH
ZIP code 45642	15 mi	Jasper, OH
ZIP code 45681	16 mi	South Salem, 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 45646, plotted from its record coordinates.

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

Scope ZIP code 45646. 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.