ZIP Code 01731

01731 is one of Massachusetts's ZIP codes, delivering to addresses in Hanscom Afb, Middlesex County.

City: Hanscom Afb
County: Middlesex County
State: Massachusetts
Prefix: 017xx

Where this code sits

01731 is part of the 017xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hanscom Afb.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 01731 delivers to without sharing its boundary.

ZIP codes nearest 01731

The ZIP codes whose reference points sit closest to 01731.
ZIP code	Distance	Delivers to
ZIP code 01730	1.9 mi	Bedford, MA
ZIP code 02421	2.9 mi	Lexington, MA
ZIP code 01773	3.0 mi	Lincoln, MA
ZIP code 02420	3.2 mi	Lexington, MA
ZIP code 02451	4.4 mi	Waltham, MA
ZIP code 01742	4.9 mi	Concord, MA
ZIP code 02452	5.3 mi	Waltham, MA
ZIP code 01803	5.4 mi	Burlington, 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 01731, plotted from its record coordinates.

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

Scope ZIP code 01731. 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.