Postal reference / United States

01940Lynnfield, Massachusetts

ZIP code 01940 is a United States postal code for Lynnfield, Massachusetts. Its county association is Essex County. The map reference point is at 42.5327, -71.0339.

State / territory: Massachusetts
Recorded place name: Lynnfield
County association: Essex
Estimated coordinate: 42.5327, -71.0339
View on OpenStreetMap
ZIP prefix: 019 · 38 ZIP codes share it
Data source: GeoNames postal reference, snapshot September 26, 2026

GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.

Area

Land area: 10.077 sq mi (2023 Census Gazetteer)

Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.

Need the last four digits?

ZIP+4 depends on the full delivery address. A five-digit code alone cannot determine its extension.

Find ZIP+4

Explore Massachusetts

Browse the other 684 ZIP codes recorded for Massachusetts, sorted by code with place and county.

Massachusetts directory

Nearby ZIP code reference points

ZIP code	Place	State	County association	Miles
01880	Wakefield	MA	Middlesex	2.8
01960	Peabody	MA	Essex	3.7
01825	North Reading	MA	Middlesex	3.7
01867	Reading	MA	Middlesex	3.8
01949	Middleton	MA	Essex	4.4
01864	North Reading	MA	Middlesex	4.6
01904	Lynn	MA	Essex	4.6
01889	North Reading	MA	Middlesex	4.7

Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.

Verify a mailing address

For mailing, confirm the complete street or PO Box address with USPS. A place record does not confirm delivery eligibility or the ZIP+4 extension.

Open USPS address lookup

Keep exploring

Massachusetts ZIP codes ZIP code radius finder County by ZIP code