Open daily 10 a.m. to 5:30 p.m.
Admission is always free!
2 Massachusetts Ave., N.E.
Washington, DC 20002
The museum's main entrance is located on the corner of First Street and Massachusetts Avenue NE. Other entrances have variable hours.
These historic images of Owney and his tags are available for your use, for free, including both digital and print publications. Please include a credit line: "Image courtesy of the National Postal Museum, Smithsonian Institution."