ZIP Code 01879

01879 is one of Massachusetts's ZIP codes, delivering to addresses in Tyngsboro, Middlesex County.

City: Tyngsboro
County: Middlesex County
State: Massachusetts
Prefix: 018xx

Where this code sits

01879 is part of the 018xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Tyngsboro.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 01879 delivers to without sharing its boundary.

ZIP codes nearest 01879

The ZIP codes whose reference points sit closest to 01879.
ZIP code	Distance	Delivers to
ZIP code 01863	2.9 mi	North Chelmsford, MA
ZIP code 01827	4.0 mi	Dunstable, MA
ZIP code 01854	4.4 mi	Lowell, MA
ZIP code 01826	4.9 mi	Dracut, MA
ZIP code 01851	5.1 mi	Lowell, MA
ZIP code 03062	5.1 mi	Nashua, NH
ZIP code 01853	5.7 mi	Lowell, MA
ZIP code 01850	5.7 mi	Lowell, 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 01879, plotted from its record coordinates.

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

Scope ZIP code 01879. 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.