USPS deliveries do not, by and large, show up on time, according to a report.
A U.S. Postal Service report ranks the nation's capital No. 1 for late mail delivery.
An inspector general's report found mail is delivered after 5 p.m. more than two-thirds of the time in the District of Columbia and the Maryland suburbs.
The inquiry was prompted by the November death of a part-time mail carrier who was shot in his mail truck in Prince George's County at 7:30 p.m.
Northern Virginia also ranks high among U.S. regions getting late mail, with 69 percent of letter carriers still on their routes at night.
Both regions were well above the 38 percent national average for late deliveries from fiscal 2011 to 2013.
The inquiry was prompted by the November death of a part-time carrier who was shot in his mail truck in Prince George's County at 7:30 p.m.