ZIP Code 43903

43903 is one of Ohio's ZIP codes, delivering to addresses in Amsterdam, Jefferson County.

City: Amsterdam
County: Jefferson County
State: Ohio
Prefix: 439xx

Where this code sits

43903 is part of the 439xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Amsterdam.

Amsterdam Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 43903 delivers to without sharing its boundary.

ZIP codes nearest 43903

The ZIP codes whose reference points sit closest to 43903.
ZIP code	Distance	Delivers to
ZIP code 43970	3.7 mi	Wolf Run, OH
ZIP code 43908	5.1 mi	Bergholz, OH
ZIP code 43925	5.4 mi	East Springfield, OH
ZIP code 43984	6.2 mi	New Rumley, OH
ZIP code 43986	7.1 mi	Jewett, OH
ZIP code 43988	9.0 mi	Scio, OH
ZIP code 43976	9.1 mi	Hopedale, OH
ZIP code 43932	9.2 mi	Irondale, 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 43903, plotted from its record coordinates.

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

Scope ZIP code 43903. 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.