Niigata Prefecture contains the administrative territorial entity Sado
Niigata Prefecture (新潟県, Niigata-ken) is a prefecture in the Chūbu region of Honshu of Japan. Niigata Prefecture has a population of 2,227,496 (1 July 2019) and is the fifth-largest prefecture of Japan by geographic area at 12,584.18 km2 (4,858.78 sq mi). Niigata Prefecture borders Toyama Prefecture and Nagano Prefecture to the southwest, Gunma Prefecture to the south, Fukushima Prefecture to the east, and Yamagata Prefecture to the northeast.
Niigata is the capital and largest city of Niigata Prefecture, with other major cities including Nagaoka, Jōetsu, and Sanjō. Niigata Prefecture contains the Niigata Major Metropolitan Area centered on Niigata with a population of 1,395,612, the largest metropolitan area on the Sea of Japan coast and the twelfth-largest in Japan. Niigata Prefecture is part of the historic Hokuriku region and features Sado Island, the sixth largest island of Japan in area following the four main islands and Okinawa Island.Geography
Niigata Prefecture stretches about 240 km (149 mi) along the Sea of Japan, from the southwest to the northeast, with a coastal plain between the mountains and the sea. It also includes Sado Island. Niigata Prefecture could be placed in either the Hokuriku or the Kōshinetsu, both of which are considered parts of the Chūbu region.
The prefecture is generally divided into four geographical areas: Jōetsu region (上越) in the south, Chūetsu (中越) in the center, Kaetsu (下越) in the north, and Sado Island. The mouth of the Shinano River, the longest river in Japan, is located in Niigata Prefecture.
As of 1 April 2014, 25% of the total land area of the prefecture was designated as Natural Parks, namely Bandai-Asahi, Chūbu-Sangaku, Nikkō, and Oze National Parks; Echigo Sanzan-Tadami and Sado-Yahiko-Yoneyama Quasi-National Parks; and thirteen Prefectural Natural Parks.
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