06340 Post Office

Find 06340 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.


Borough Post Office 202 Thames Street Groton CT 06340 860-445-0180


Groton Long Point Post Office 44 Beach Road Groton CT 06340 860-536-1404

Groton Post Office 100 Plaza Court Groton CT 06340 860-445-8154

Noank Post Office 19 Pearl Street Groton CT 06340 860-536-1433

Groton Naval Base Post Office 1 Naval Submarine Base Groton CT 06349 2.5 miles from 06340 860-445-7744

New London Post Office 27 Masonic Street New London CT 06320 2.9 miles from 06340 860-443-4393

West Mystic Post Office 55 West Mystic Avenue Groton CT 06355 3.3 miles from 06340 860-536-0530

Mystic Post Office 23 East Main Street Stonington CT 06355 3.8 miles from 06340 860-536-8143

Old Mystic Post Office 47 Main Street Stonington CT 06378 4.9 miles from 06340 860-536-0510

Quaker Hill Post Office 132 Old Norwich Road Waterford CT 06375 5.1 miles from 06340 860-443-5020

Waterford Post Office 222 Boston Post Road Waterford CT 06385 5.1 miles from 06340 860-443-8407

Gales Ferry Post Office 12 Military Highway Ledyard CT 06335 5.6 miles from 06340 860-464-7681

Ledyard Post Office 764 Colonel Ledyard Highway Ledyard CT 06339 6.4 miles from 06340 860-464-3147

Fishers Island Post Office 1 Oriental Ave Fishers Island NY 06390 6.7 miles from 06340 631-788-7835

Stonington Post Office 20 Broad Street Stonington CT 06378 7.0 miles from 06340 860-535-0454

Montville Post Office 293 Connecticut 163 Montville CT 06353 8.0 miles from 06340 860-848-7665

Niantic Post Office 58 Pennsylvania Avenue East Lyme CT 06357 8.2 miles from 06340 860-739-8211

Uncasville Post Office 1587 Norwich-New London Turnpike Montville CT 06382 8.5 miles from 06340 860-848-8454

East Lyme Post Office 225 Boston Post Road East Lyme CT 06333 9.5 miles from 06340 860-739-2095

Oakdale Post Office 711 Connecticut 163 Montville CT 06370 9.8 miles from 06340 860-848-0453

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.