Sussex County Post Office

Find Sussex County New Jersey 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.


Andover Post Office 5 Lenape Road Andover NJ 07821 973-786-5651


Augusta Post Office 33 U.s. 206 Frankford NJ 07822 973-579-1081

Branchville Post Office 1 Broad Street Branchville NJ 07826 973-948-3580

Franklin Post Office 270 Route 23 Franklin NJ 07416 973-827-0570

Glenwood Post Office 958 Route 517 Glenwood NJ 07418 973-764-2616

Greendell Post Office 243 Kennedy Road Green NJ 07839 973-383-6499

Hamburg Post Office 28 Main Street Hamburg NJ 07419 973-827-0571

Highland Lakes Post Office 177 Breakneck Road Highland Lakes NJ 07422 973-764-9086

Hopatcong Post Office 32 Durban Avenue Hopatcong NJ 07843 973-398-1046

Lafayette Post Office 96 Highway 15 Lafayette NJ 07848 973-383-5757

Layton Post Office 122 County Rd 560 Layton NJ 07851 973-948-4359

Mc Afee Post Office 40 New Jersey 94 McAfee NJ 07462 973-827-8071

Middleville Post Office 904 County Road 521 Newton NJ 07860 973-383-8544

Montague Post Office 264 Clove Road Montague NJ 07827 973-293-7444

Newton Post Office 39 Main Street Newton NJ 07860 973-383-1970

Ogdensburg Post Office 328 Main Street Ogdensburg NJ 07439 973-827-8328

Sparta Post Office 2 Main Street Sparta NJ 07871 973-729-7444

Stanhope Post Office 4 Kelly Place Stanhope NJ 07874 973-347-2338

Stillwater Post Office 912 Main Street Stillwater NJ 07875 973-383-7747

Stockholm Post Office 2741 Route 23 Hardyston NJ 07460 973-697-8732

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.