Eastside Carrier Annex Post Office

does not have retail counter services

This USPS post office is located in Buffalo, NY where the date and time is currently: 5/11/2026, 6:03:51 PM

Images

Stamps.com logo
Buy postage online
Discounted USPS and UPS rates of up to 84%.
Promo code
MAIL100
$100 value

Check package rates from 14240

Est. for 10×8×6 in package. Full calculator for exact rates.

Address

1200 William St
Buffalo, NY 14240-9799

Latitude: 42.886485, Longitude: -78.8269299

Get directions or buy postage

See nearby post offices
Buffalo · Closed
8:30 AM – 6:00 PM
0.0 mi
Broadway Buffalo · Closed
9:00 AM – 1:30 PM
0.7 mi
Ellicott · Closed
8:30 AM – 5:30 PM
2.2 mi
Niagara Square · Closed
8:30 AM – 5:00 PM
2.8 mi
South Side Buffalo · Closed
8:30 AM – 5:00 PM
3.0 mi
Central Park · Closed
8:30 AM – 5:00 PM
3.5 mi
Cheektowaga · Closed
8:30 AM – 5:00 PM
4.1 mi
West Side Buffalo · Closed
8:30 AM – 5:00 PM
4.2 mi
Lackawanna · Closed
9:00 AM – 11:00 AM, 12:00 PM – 5:00 PM
4.2 mi
Northside Buffalo · Closed
8:30 AM – 5:00 PM
5.0 mi

Services at Eastside Carrier Annex Post Office

No dedicated parking. Here's what you can do at this location:

Shipping

Carrier Services
Postal carriers deliver and pick up mail and packages along routes serving homes and businesses in this area. You can schedule a free package pickup from your address.

PO Box & Mail

General Delivery
Receive mail without a permanent address. Mail is held at the post office and you pick it up at the counter with a valid ID. Often used by travelers or people between moves.
Hold Mail Pickup
Pick up mail that USPS has been holding while you were away. You can request a hold for up to 30 days through usps.com or at the counter.
Package Pickup (Notice Left)
Pick up a package that couldn't be delivered — the carrier left a slip at your door. Bring the notice and a valid ID.

Other Services

Customer Service Referrals
Staff can help answer questions or direct you to the right resource for issues with mail delivery, address changes, or other USPS services.