News Release, United States Postal Service

Maryland Area Post Offices Will Observe Normal Hours July 15, Self-Service Kiosk Offer Customers 24/7 Access

MARYLAND — The Postal Service is ready to assist customers with their tax mailing needs. Post Offices in Maryland and the Washington, DC metro area will remain open during normal business hours for the July 15 federal tax filing deadline this year.

Below is a list of Maryland and Washington, DC, area Post Offices with early opening hours and normal business hours later than 5 p.m.:

OfficeLocationHours of Operation
National Capital Post Office2 Massachusetts Ave. NE
Washington, DC 20002
9 a.m.-7p.m.
Friendship Station4005 Wisconsin Ave. NW
Washington, DC 20016
8 a.m.-6 p.m.
Union Station Post Office50 Massachusetts Ave. NE
Washington, DC 20002
7:30 a.m.-5 p.m.
Suburban MD Post Office16501 Shady Grove Road
Gaithersburg, MD 20898
7:30 a.m.-7 p.m.

The Postal Service has many options for last-minute tax filers. The Postal Service has 32 Self-Service Kiosks located throughout the Washington, DC, metro area. Customers can locate a 24-hour Self-Service Kiosk or obtain directions to the closest Self-Service Kiosk location by visiting

Customers can weigh and mail their tax returns, or regular mail and packages at any Self-Service Kiosk. Customers can also use the Self-Service Kiosk for most retail services, including renewing PO Boxes, purchasing stamps, weighing packages and calculating postage for Priority Express Mail, Priority Mail, and First-Class Mail. All Self-Service Kiosks accept debit and credit cards only. Kiosk locations can be found on

The Postal Service also offers these tax mailing tips:

  • On July 15, mail early in the day at any Post Office, station, branch or collection box.
  • If depositing returns in a collection box on Wednesday, July 15, double-check the pick-up schedule on the label. Please remember that mail must be deposited before the last collection time at the Post Office or collection box on July 15 to receive a July 15 postmark.
  • Stamped packages weighing more than 13 ounces must be presented in person to a Post Office clerk to comply with FAA regulations.
  • Make sure your return is signed and dated with all schedules and supporting documents enclosed.
  • Affix the appropriate postage, especially since the item may weigh more than an ounce. Have a postal retail associate weigh and rate the item for you. Tax agencies will not pay postage due and your short-paid return will be returned to sender – and you may miss the deadline (tip: 5 pages equal approximately one ounce).
  • It is very important that your envelope has a return address. Short-paid items without a return address will be sent to the postal mail recovery office for determination of the sender, delaying its return.
  • Tax forms are no longer available at Post Offices. Check local libraries or online at (Federal forms) and (state forms).

Please remember that mail must be deposited before the last collection time at the Post Office or collection box on July 15 to receive a July 15 postmark.

Expecting a tax refund by mail this year? Consider enrolling in Informed Delivery, a free feature that allows you to preview your mail and manage packages securely online. Sign up for Informed Delivery at

The Postal Service does not receive tax dollars for operating expenses; it relies entirely on the sale of postage, products and services to fund its operations.