is a special ward located in Tokyo, Japan. The ward calls itself Katsushika City in English. As of May 1, 2015, the ward has an estimated population of 444,356, and a population density of 12,770 people per km². The total area is 34.80 km². Geography Katsushika Ward is at the east end of Tokyo Metropolis. It is on an alluvial plain and it is low above sea level. The ward office (Katsushika city hall) is located at Tateishi. Boundaries Katsushika has boundaries with three wards of Tokyo: Adachi, Edogawa and Sumida. The cities of Matsudo in Chiba Prefecture, and Misato and Yashio in Saitama Prefecture form the northeast border of the ward. Rivers Major rivers in Katsushika include the Edogawa, Arakawa and Ayasegawa. Nakagawa and Shin-nakagawa flows through the ward. Districts and neighborhoods Kameari-Aoto Area Aoto Kameari Nishikameari Shiratori Kanamachi-Niijuku Area Higashikanamachi Kanamachi Kanamachijōsuijō Niijuku Tōganemachi Minamiayase-Ohanadjaya-Horikiri Area Higashihorikiri Horikiri Kosuge Ohanajaya Mizumoto Area Higashimizumoto Minamimizumoto Mizumoto Mizumotokoen Nishimizumoto Okudo-Shinkoiwa Area Higashishinkoiwa Nishishinkoiwa Okudo Shinkoiwa Shibamata-Takasago Area Hosoda Kamakura Shibamata Takasago Tateishi-Yotsugi Area Higashitateishi Higashiyotsugi Takaramachi Tateishi Yotsugi History Katsushika District was originally a division of Musashi Province. When the province was divided and reconfigured, the district was partitioned between Kita-Katsushika District (within Saitama Prefecture), Higashi-Katsushika District (within Chiba Prefecture) and the remainder was based in Tokyo Prefecture. Minami-Katsushika District conformed today's Katsushika Ward proper, plus Edogawa, Koto and Sumida wards. On October 1, 1932, the former Minami-Katsushika District of what was then known as Tokyo Prefecture, and its seven towns and villages, merged and became part of the old Tokyo City. The special ward was founded on March 15, 1947. Katsushika contains the Kasai Shrine, Narihira Santosen Temple, the "Bound Jizō" of Ōoka Echizen, and Shibamata Taishakuten, selected as one of the 100 Soundscapes of Japan and 100 Landscapes of Japan (Heisei era). Economy Takara Tomy has its headquarters in Katsushika. Government and infrastructure The Tokyo Detention House, a correctional facility, is in the ward. One of Japan's seven execution chambers is located there. Education Colleges and universities Tokyo Seiei College Tokyo University of Science Metropolitan schools Tokyo Metropolitan Government Board of Education operates public high schools. Special school: Katsushika School for the Blind (東京都立葛飾盲学校) Municipal schools Katsushika City Board of Education operates public elementary and junior high schools. Municipal junior high schools: Aoba Junior High School (青葉中学校) Aoto Junior High School (青戸中学校) Ayase Junior High School (綾瀬中学校) Daido