is a city located in Tokyo Metropolis, Japan. , the city had an estimated population of 74,972 in 36,376 households, and a population density of 7300 persons per km2. The total area of the city was . Geography Kiyose City is roughly in the shape of a wedge, bordered by Saitama Prefecture to the north, east and south and separated from the city of Tokorozawa by the Yanase River. The city has considerable green space, with around 46% of its area remaining rural. Kiyose is located on a flat tableland about 15 km from the northeastern edge of Musashino Plateau. The city measures approximately 6.5 km northeast to southwest and 2 km northwest to southeast, with the west side slightly higher than the east. Average altitude above sea level ranges from 65 meters at Takeoka in the west to 20 meters at Shitajuku in the northeastern side. The city area is mostly diluvial soil except for a small area of alluvial soil by Yanase River, which runs on the edge of the region. Surrounding municipalities Saitama Prefecture Niiza Tokorozawa Tokyo Metropolis Higashikurume Higashimurayama Climate Kiyose has a Humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Kiyose is 14.0 °C. The average annual rainfall is 1647 mm with September as the wettest month. The temperatures are highest on average in August, at around 25.7 °C, and lowest in January, at around 2.3 °C. Demographics Per Japanese census data, the population of Kiyose increased rapidly in the 1950s and 1960s with the development of many large-scale public housing projects. History Archaeologists have found evidence of human settlement in the Kiyose area dating from over 20 thousand years ago, during the last glacial maximum. During the Muromachi period, the area came under the control of from Saku in Shinano Province (now Nagano Prefecture). The Oishi clan constructed Taki-no-Jo Castle, but it was lost during battles with Toyotomi Hideyoshi. The village of Kiyose was created within Kitatama District, Kanagawa by the merger of the hamlets of , , , , , and with the establishment of the modern municipalities system on April 1, 1889. In 1893, Kitatama was transferred from Kanagawa Prefecture to Tokyo. In 1954, Kiyose was elevated to town statu and to city status on October 1, 1970. Kiyose was noted for many sanatoria for tuberculosis patients. Whilst