Carroll County Post Office

Find Carroll County Maryland 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.


Finksburg Post Office 2999 Dede Road Finksburg MD 21048 410-526-0420


Hampstead Post Office 4005 Houck Avenue Hampstead MD 21074 410-374-3486

Keymar Post Office 6747 Middleburg Road Keymar MD 21757 410-775-2262

Ladiesburg Post Office 12509 Woodsboro Pike Keymar MD 21757 301-845-2956

Manchester Post Office 3100 Westminster Street Manchester MD 21102 410-374-0586

Mount Airy Post Office 505 Windy Knoll Drive Mount Airy MD 21771 301-829-1199

New Midway Post Office 12048 Woodsboro Pike Keymar MD 21757 301-845-2145

New Windsor Post Office 204 Maple Avenue New Windsor MD 21776 410-635-2151

Sykesville Post Office 1363 Progress Way Sykesville MD 21784 410-795-0350

Taneytown Post Office 13 Middle Street Taneytown MD 21787 410-756-6411

Union Bridge Post Office 111 Penrose Street Union Bridge MD 21791 410-775-2510

Westminster Post Office 345 Woodward Drive Westminster MD 21157 410-848-4805

Woodbine Post Office 7623 Woodbine Road Woodbine MD 21797 410-795-9596

About Carroll County Post Offices

Carroll County Post Offices are branch locations of the customer service postal facilities of the United States Postal Service (USPS) in Carroll County, MD. The USPS is an independent agency of the federal government that provides mail and package delivery services to all states and territories. Carroll County post offices are supported entirely by revenues generated by their own operations. Operational authority over the USPS lies with a Board of Governors and rate setting authority falls under the Postal Rate Commission.

You may contact the Post Office for questions about:
  • Carroll County Post Office hours and locations
  • Mail and package delivery services
  • Carroll County PO Box services
  • Passport applications and renewals
  • Carroll County Post Office jobs and employment
USPS Mail Services

The USPS uses a vast network of Post Offices, Processing and Distribution Centers, Priority Mail Processing Centers, Air Mail Centers, and Bulk Mail Centers to sort, process, distribute, and deliver mail. Carroll County Post Offices serve as one of the primary points of customer contact in the mail delivery process.

Carroll County Mail Delivery Services

Post Offices in Carroll County accept mail and packages from senders, offering a range of mailing and pricing options. The most common form of mail delivery, and one for which the Carroll County USPS has a legal monopoly, is residential first-class mail. First-class mail is designed for envelopes and lightweight packages, and it provides delivery to any location in the U.S. at a flat rate of one first-class mail stamp. Multiple other mailing options are available for letters and packages of any size. Priority mail options provide faster delivery at a higher cost than first-class mail. Carroll County Post Offices sell stamps, shipping supplies, and certain collectors' and gift items. Customers can also choose Registered, Certified, and Return Receipt mail for varying degrees of verification of an item's delivery. Post Offices also sell money orders. Shipping and customs forms are also available at Carroll County Post Offices.

Carroll County PO Boxes

Businesses and residential customers can also use the Post Office to receive their mail instead of choosing delivery to their door. Post Office Boxes, also called P.O. Boxes, are available for rent in multiple sizes for a monthly rental fee.

Carroll County Passport Applications & Renewals

The Carroll County Post Office provides passport services. Passport services in Carroll County may include help with renewing passports, applying for a new passport, changing names on a passport, and processing expedited passport services. Passport acceptance services provided by Carroll County Post Offices often require having a scheduled appointment.