We just got an update from the USPS on additional postal service disruptions in the D.C. area on Inauguration Day. On top of the zip codes and retail post office locations we already told you about, the 20036 zip code will also experience partial or non-delivery, and the following post office locations will also be closed: 800 K Street NW and 437 L’Enfant Plaza SW. Remember also that there is no mail service on Monday, January 19, in observance of the Martin Luther King Jr. holiday.