New Haven County Post Office

Find New Haven County Connecticut 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.


Allingtown Post Office 75 Farwell Street West Haven CT 06516 203-937-7718


Amity Retail Store Post Office 1449 Whalley Avenue New Haven CT 06515 203-389-9881

Ansonia Post Office 237 Main Street Ansonia CT 06401 203-734-6818

Baybrook Station Post Office 14 Ocean Avenue West Haven CT 06516 203-931-0899

Beacon Falls Post Office 101 North Main Street Beacon Falls CT 06403 203-729-2341

Branford Post Office 35 Park Place Branford CT 06405 203-488-0663

Cheshire Post Office 210 Maple Avenue Cheshire CT 06410 203-272-3594

Derby Post Office 74 Olivia Street Derby CT 06418 203-734-0735

Devon Post Office 548 Naugatuck Avenue Milford CT 06460 203-876-6180

Downtown Milford Post Office 6 West River Street Milford CT 06460 203-876-6180

East End Post Office 159 Manor Avenue Waterbury CT 06705 203-574-6512

Fair Haven Post Office 230 Grand Avenue New Haven CT 06513 203-773-3538

Federal Post Office 754 Chapel Street New Haven CT 06510 203-782-7007

Guilford Post Office 42 Water Street Guilford CT 06437 203-453-2429

Hamden Post Office 1744 Dixwell Avenue Hamden CT 06514 203-281-4573

Kilby Post Office 369 Washington Avenue New Haven CT 06519 203-782-3717

Lakewood Post Office 797 Lakewood Road Waterbury CT 06704 203-757-7511

Madison Post Office 20 State Street Guilford CT 06437 315-893-1831

Madison Post Office 781 Boston Post Road Madison CT 06443 203-245-2394

Meriden Post Office 190 Center Street Meriden CT 06450 203-235-5755

Middlebury Post Office 590 Middlebury Road Middlebury CT 06762 203-758-2334

Milford Post Office 300 Pepes Farm Road Milford CT 06460 203-876-6180

Mount Carmel Post Office 2514 Whitney Avenue Hamden CT 06518 203-407-5822

Naugatuck Post Office 170 Water Street Naugatuck CT 06770 203-729-5381

New Haven Post Office 50 Brewery Street New Haven CT 06511 203-782-7007

North Branford Post Office 280 Branford Road North Branford CT 06471 203-488-5541

North Haven Post Office 74 Washington Avenue North Haven CT 06473 203-239-0415

Northford Post Office 1447 Middletown Avenue Northford CT 06472 203-484-2761

Orange Post Office 36 Old Tavern Road Orange CT 06477 203-795-3523

Plaza Post Office 41 Wigwam Avenue Waterbury CT 06704 203-759-3642

Prospect Post Office 70 Waterbury Road Prospect CT 06712 203-758-4771

Seymour Post Office 91 Main Street Seymour CT 06483 203-888-3830

Short Beach Post Office 5 Court Street Branford CT 06405 203-488-8500

Southbury Post Office 710 Main Street South Southbury CT 06488 203-264-2779

Stony Creek Post Office 202 Thimble Island Road Branford CT 06405 203-488-5111

Trolley Square Post Office 175 Main Street East Haven CT 06512 203-469-9071

Union City Post Office 505 North Main Street Naugatuck CT 06770 203-720-4199

Wallingford Post Office 4 South Main Street Wallingford CT 06492 203-269-8712

Waterbury Post Office 135 Grand Street Waterbury CT 06702 203-574-6521

West Haven Post Office 589 Campbell Avenue West Haven CT 06516 203-931-9812

Westville Post Office 95 Fountain Street New Haven CT 06515 203-389-8655

Whitneyville Post Office 40 Putnam Avenue Hamden CT 06517 203-230-4712

Wolcott Post Office 803 Wolcott Road Wolcott CT 06716 203-879-1557

Yale Post Office 206 Elm Street New Haven CT 06511 203-773-3454

Yalesville Post Office 314 Main Street Wallingford CT 06492 203-269-6222

About Post Offices

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.