ZIP Code 01243

01243 is one of Massachusetts's ZIP codes, delivering to addresses in Middlefield, Hampshire County.

City: Middlefield
County: Hampshire County
State: Massachusetts
Prefix: 012xx

Where this code sits

01243 is part of the 012xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Middlefield.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 01243 delivers to without sharing its boundary.

413 Area code 413

ZIP codes nearest 01243

The ZIP codes whose reference points sit closest to 01243.
ZIP code	Distance	Delivers to
ZIP code 01098	4.5 mi	Worthington, MA
ZIP code 01011	5.4 mi	Chester, MA
ZIP code 01223	5.6 mi	Becket, MA
ZIP code 01235	6.0 mi	Hinsdale, MA
ZIP code 01084	7.5 mi	West Chesterfield, MA
ZIP code 01026	8.7 mi	Cummington, MA
ZIP code 01050	9.4 mi	Huntington, MA
ZIP code 01012	9.8 mi	Chesterfield, MA

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 01243, plotted from its record coordinates.

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

Scope ZIP code 01243. 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.