Ōkawa-shi

• Name — Ōkawa • Native Name — 大川市 • Settlement Type — City • Subdivision Type — Country • Subdivision Name — Japan • Subdivision Type1 — Region • Subdivision Name1 — Kyushu • Subdivision Type2 — Prefecture • Subdivision Name2 — Fukuoka • Subdivision Type3 — District • Leader Title — Mayor • Leader Name — Yoshiyuki Eto (since October 2024) • Leader Title1 — Vice Mayor • Unit Pref — Metric • Area Total Km2 — 33.62 • Population Total — 31,605 • Population As Of — January 31, 2024 • Population Density Km2 — auto • Timezone1 — JST • Utc Offset1 — +09:00 • Blank Name Sec1 — City hall address • Blank Info Sec1 — 256-1 Sakami, Ōkawa-shi, Fukuoka-ken 831-8601 • Illustration — Chikugo River Lift Bridge

Ōkawa is located in southern Fukuoka Prefecture next to the border with Saga Prefecture. The Chikugo River flows from northeast to southwest through the city, which is relatively flat. At the centre of Ōkawa, the Hanamune River flows into the Chikugo River as a tributary.

Fukuoka Prefecture • Kurume • Ōki • Yanagawa Saga Prefecture • Kanzaki • Saga

Ōkawa has a humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Ōkawa is 16.3 °C. The average annual rainfall is 1946 mm with September as the wettest month. The temperatures are highest on average in August, at around 27.1 °C, and lowest in January, at around 6.0 °C.

Per Japanese census data, the population of Ōkawa is as shown below

The area of Ōkawa was part of ancient Chikugo Province. During the Edo Period the area was divided between of Kurume Domain and Yanagawa Domain. After the Meiji restoration, the town of Ōkawa was established on May 1, 1889 with the creation of the modern municipalities system. It was the location of a dike constructed by Dutch engineer Johannis de Rijke in 1890. It annexed the neighboring villages of Kawaguchi, Onojima, Taguchi, Mimata, and Kimuro on April 1, 1955 and was raised to city status.

Ōkawa has a mayor-council form of government with a directly elected mayor and a unicameral city council of 15 members. Ōkawa, together with the town of Ōki, contributes one member to the Fukuoka Prefectural Assembly. In terms of national politics, the city is part of the Fukuoka 6th district of the lower house of the Diet of Japan.

Ōkawa is noted for its high concentration of furniture-related woodworking manufacturers, which began in the late Muromachi period.

Ōkawa has eight public elementary schools and two public junior high schools operated by the city government and one public high school operated by the Fukuoka Prefectural Board of Education. There is also one private high school. The International University of Health and Welfare has a campus in Ōkawa.

Ōkawa has not had any passenger railway service since the discontinuation of the JNR Saga Line in 1987. The nearest train stations are Nishitetsu Yanagawa Station on the Nishitetsu Tenjin Ōmuta Line in Yanagawa City in the center and southern part of the city, Hatchōmuta Station in Ōki Town and Kamachi Station in Yanagawa in the eastern part of the city, and Daizenji Station in Kurume in the northern part of the city.

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