ZIP Code 43143

43143 is one of Ohio's ZIP codes, delivering to addresses in Mount Sterling, Madison County.

City: Mount Sterling
County: Madison County
State: Ohio
Prefix: 431xx

Where this code sits

43143 is part of the 431xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mount Sterling.

Mount Sterling Ohio ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 43143 delivers to without sharing its boundary.

ZIP codes nearest 43143

The ZIP codes whose reference points sit closest to 43143.
ZIP code	Distance	Delivers to
ZIP code 43117	5.3 mi	Derby, OH
ZIP code 43146	8.6 mi	Orient, OH
ZIP code 43126	9.0 mi	Harrisburg, OH
ZIP code 43106	9.2 mi	Bloomingburg, OH
ZIP code 43151	11 mi	Sedalia, OH
ZIP code 43164	11 mi	Williamsport, OH
ZIP code 43145	11 mi	New Holland, OH
ZIP code 43116	12 mi	Commercial Point, 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 43143, plotted from its record coordinates.

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

Scope ZIP code 43143. 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.