Middlesex County Post Office

Find Middlesex County Massachusetts post offices and USPS mailing boxes. Post offices provide information on bulk mail services, domestic mail delivery, international shipping, change of address, mail forwarding, PO boxes, and passport services.


Acton Post Office 7 Post Office Square Acton MA 01720 978-263-7744


Arlington Heights Post Office 1347 Massachusetts Avenue Arlington MA 02476 781-643-3888

Arlington Post Office 10 Court Street Arlington MA 02476 781-648-5376

Ashby Post Office 10 Common Rd Ste 2 Ashby MA 01431 978-386-0041

Ashland Post Office 205 Main Street Ashland MA 01721 508-881-5888

Auburndale Post Office 2122 Commonwealth Avenue Newton MA 02466 617-527-1970

Ayer Post Office 1 Columbia Street Ayer MA 01432 978-772-6896

Bedford Post Office 156 Great Road Bedford MA 01730 781-275-3068

Bedford Retail Unit Post Office 168 Great Road Bedford MA 01730 781-275-2083

Belmont Post Office 405 Concord Avenue Belmont MA 02478 617-484-4201

Billerica Post Office 460 Boston Road Billerica MA 01821 978-663-8301

Burlington Post Office 5 Bedford Street Burlington MA 01803 781-270-4449

Cambridge Post Office 770 Massachusetts Avenue Cambridge MA 02139 617-575-8700

Carlisle Post Office 70 Bedford Road Carlisle MA 01741 978-369-6820

Chelmsford Post Office 45 Alpine Lane Chelmsford MA 01824 978-256-2670

Chestnut Hill Post Office 12 Middlesex Road Newton MA 02467 617-566-0941

Cochituate Post Office 148 Commonwealth Road Wayland MA 01778 508-653-6801

Concord Post Office 34 Walden Street Concord MA 01742 978-369-7613

Devens Post Office 240 Barnum Road Devens MA 01434 978-772-3686

Downtown Station Lowell Post Office 20 Market Street Lowell MA 01852 978-454-1222

What Change of Address options are available?

Customers can request a temporary or permanent Change of Address either online or in person at the Post Office using PS Form 3575. The online application for Change of Address has a $1.00 identity validation fee.

Is it possible to insure mail and items sent via the USPS?

Yes. Standard mail can be insured for up to $5,000 for an additional fee. Registered mail items can be insured for up to $50,000.

What is the USPS Office of Inspector General?

The Office of Inspector General (OIG) is a division within the USPS responsible for ensuring the integrity and accountability of the postal service. It conducts investigations to safeguard the postal system and performs audits and reviews.