|Region||Chūbu (Kōshin'etsu) (Hokuriku)|
|• Total||299.61 km2 (115.68 sq mi)|
(July 1, 2019)
|• Density||18/km2 (46/sq mi)|
|Time zone||UTC+9 (Japan Standard Time)|
|Address||912 Shimonoseki, Sekikawa-mura, Iwafune-gun, Niigata-ken 959-3265|
Sekikawa (関川村, Sekikawa-mura) is a village located in Niigata Prefecture, Japan. As of 1 July 2019[update], the village had an estimated population of 5,291 in 1920 households, and a population density of 17.7 persons per km². The total area of the village was 299.61 square kilometres (115.68 sq mi).
Sekikawa is located in mountainous northeastern Niigata Prefecture, bordered by Yamagata Prefecture to the east.
Sekikawa has a Humid climate (Köppen Cfa) characterized by warm, wet summers and cold winters with heavy snowfall. The average annual temperature in Sekikawa is 11.2 °C. The average annual rainfall is 1898 mm with September as the wettest month. The temperatures are highest on average in August, at around 24.9 °C, and lowest in January, at around -1.2 °C.
Per Japanese census data, the population of Sekikawa has declined steadily over the past 40 years.
The area of present-day Sekikawa was part of ancient Echigo Province. During the Edo period, much of the area was part of the holdings of Yonezawa Domain under the Tokugawa shogunate. The area was organized as part of Iwafune District, Niigata following the Meiji restoration. The modern village of Sekigawa was established on August 1, 1954 by the merger of the villages of Seki, Shichikatani, and Kukatani. On August 1, 1954, Sekikawa merged with the neighboring village of Onnagawa.
The local economy is dominated by agriculture
Sekikawa has one public elementary school and one public middle school operated by the village government. The village does not have a high school.