ZIP Code 04237

04237 is one of Maine's ZIP codes, delivering to addresses in Hanover, Oxford County.

City: Hanover
County: Oxford County
State: Maine
Prefix: 042xx

Where this code sits

04237 is part of the 042xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hanover.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 04237 delivers to without sharing its boundary.

207 Area code 207

ZIP codes nearest 04237

The ZIP codes whose reference points sit closest to 04237.
ZIP code	Distance	Delivers to
ZIP code 04217	7.0 mi	Bethel, ME
ZIP code 04219	7.8 mi	Bryant Pond, ME
ZIP code 04226	7.8 mi	East Andover, ME
ZIP code 04276	8.2 mi	Rumford, ME
ZIP code 04286	9.6 mi	West Bethel, ME
ZIP code 04257	10 mi	Mexico, ME
ZIP code 04216	12 mi	Andover, ME
ZIP code 04275	12 mi	Roxbury, ME

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 04237, plotted from its record coordinates.

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

Scope ZIP code 04237. 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.