Putnam County Post Office

Find Putnam County New York 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.


Baldwin Place Post Office 167 US Highway 6 Mahopac NY 10541 845-628-8029


Brewster Post Office 3 Mount Ebo Road North Brewster NY 10509 845-279-0138

Carmel Post Office 29 Fair Street Carmel NY 10512 845-225-4372

Cold Spring Post Office 51 Chestnut Street Cold Spring NY 10516 845-265-3486

Garrison Post Office 1145 New York 9D Garrison NY 10524 845-424-4839

Lake Peekskill Post Office 132 Lake Drive Lake Peekskill NY 10537 845-528-2762

Mahopac Falls Post Office 173 Myrtle Avenue Mahopac NY 10541 845-628-9582

Mahopac Post Office 346 US Highway 6 Mahopac NY 10541 845-628-1061

Patterson Post Office 19 Front Street Patterson NY 12563 845-878-3515

Putnam Valley Post Office 12 Peekskill Hollow Road Putnam Valley NY 10579 845-528-0341

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.