ZIP Code 49128

49128 is one of Michigan's ZIP codes, delivering to addresses in Three Oaks, Berrien County.

City: Three Oaks
County: Berrien County
State: Michigan
Prefix: 491xx

Where this code sits

49128 is part of the 491xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Three Oaks.

Three Oaks Michigan ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 49128 delivers to without sharing its boundary.

269 Area code 269

ZIP codes nearest 49128

The ZIP codes whose reference points sit closest to 49128.
ZIP code	Distance	Delivers to
ZIP code 49116	3.6 mi	Lakeside, MI
ZIP code 49129	4.0 mi	Union Pier, MI
ZIP code 49115	4.4 mi	Harbert, MI
ZIP code 49125	4.9 mi	Sawyer, MI
ZIP code 49119	5.3 mi	New Troy, MI
ZIP code 49113	5.8 mi	Galien, MI
ZIP code 46371	6.6 mi	Rolling Prairie, IN
ZIP code 49117	6.9 mi	New Buffalo, MI

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 49128, plotted from its record coordinates.

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

Scope ZIP code 49128. 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.