81003619 is a postcode in the Sumida ward of Tokyo, Japan. The area consists of the central neighborhoods of Honjo and Mukojima, and is known for its abundance of shrines, temples, and historical sites, including the historical Yanaka Cemetery. The area is home to many stores, restaurants, and entertainment establishments, as well as numerous theaters and museums. It is also home to two of Japan's largest parks, the Sumida Park and the Tokyo Sky Tree Park.