Cortland County Post Office

Find Cortland 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.


Blodgett Mills Post Office 2320 Main Street Cortland NY 13045 607-753-1467


Cincinnatus Post Office 2763 Lower Cincinnatus Road Cincinnatus NY 13040 607-863-4340

Cortland Post Office 88 Main Street Cortland NY 13045 607-753-0266

Homer Post Office 2 South Main Street Homer NY 13077 607-749-3071

Killawog Post Office 614 Jennings Creek Road Marathon NY 13803 607-849-3969

Little York Post Office 6002 Route 281 Homer NY 13077 607-749-4868

Marathon Post Office 12 Main Street Marathon NY 13803 607-849-3817

Mc Graw Post Office 16 East Main Street McGraw NY 13101 607-836-6776

Preble Post Office 1968 Preble Road Preble NY 13141 607-749-2027

Truxton Post Office 3706 Route 13 Truxton NY 13158 607-842-6483

Willet Post Office 1300 Lower Cincinnatus Road Cincinnatus NY 13040 607-863-3755

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.