Kōriyama

Kōriyama is a city in Fukushima Prefecture, Japan. , the city has an estimated population of 322,996 people in 141760 households, and a population density of 430 persons per km2. The total area of the city is . Kōriyama is designated as a core city and functions as a commercial center for Fukushima Prefecture. Kōriyama is the third largest conurbation in the Tōhoku region. Kōriyama is located in the center of the Nakadōri region of Fukushima Prefecture in the Tōhoku region of Japan. The Adatara Mountains are to the north, Lake Inawashiro is to the west, and the Abukuma Highlands are to the east. The Abukuma River flows through downtown Kōriyama. The downtown area extends to the west of Kōriyama Station. Sukagawa Aizu-Wakamatsu Nihonmatsu Tamura Motomiya Otama Ten-ei Hirata Miharu Ono Inawashiro Kōriyama has a Humid subtropical climate (Köppen Cfa) characterized by hot wet summers and cool, quite dry winters. The average annual temperature in Kōriyama is . The average annual rainfall is with September as the wettest month. The temperatures are highest on average in August, at around , and lowest in January, at around . Per Japanese census data, the population of Kōriyama has increased over the past 60 years. Kōriyama originated as a regional governmental center in the Nara period, when the area was on the frontier of Yamato settlement of the Tōhoku region. The surrounding area developed into shōen controlled by various samurai clans in the Heian and Kamakura periods. Nearby centers, such as Nihonmatsu developed into castle towns, Kōriyama remained as a commercial center and thrived as a post town because of its importance as a traffic focal point into the Edo period and was part of the territory of Nihonmatsu Domain. With the establishment of the modern municipalities system on April 1, 1889, the town of Kōriyama was established within Asaka District. In the early Meiji period, many dispossessed samurai were assigned undeveloped lands in the area to reclaim and as a result, the population grew and region developed into an agricultural center.