The name Kōshin'etsu is a composite formed from the names of old provinces which are adjacent to each other — Kai (now Yamanashi), Shinano (now Nagano) and Echigo (now Niigata). The region is surrounded by the Sea of Japan to its north west, Hokuriku region to its west, Tōkai region to its south west, Kantō region to its south east, and Tōhoku region to its north east. The name for this geographic area is usually combined with Kantō region (as in "Kantō-Kōshin'etsu"); and it is sometimes combined with Hokuriku region (as in "Kantō-Kōshin'etsu-Hokuriku" or "Hokuriku-Kōshin'etsu").
- Nippon Telegraph & Telephone directories categorize phone numbers by region, including the Koshin'etsu area.
- The Japanese Society of Nuclear Medicine categorizes its membership by region, including the Kanto-Koshinetsu region.
- In Japan, the Children's Cancer Registry program is administered by seven National Children's Medical Registration Centers, including Kanto-KoShinEtsu.
The Kōshin'etsu subregion economy is for almost all purposes the same as the Shin'etsu subregion economy. The economy of Kōshin'etsu subregion is large and highly diversified with a strong focus on silverware, electronics, information technology, precision machinery, agriculture and food products, and tourism. It also produces crude oil. Until 1989, the Kōshin'etsu subregion also partook in gold mining, particularly at Sado Island.
Per Japanese census data, and, Kōshin'etsu subregion has had negative population growth since 2000
- Nihon Ginkō. (1990). Bank of Japan Monetary and Economic Studies, Vols. 8-9, p. 129.
- "Abstracts from the 25th Kanto-Koshinetsu regional meeting of the Japanese Society of Nuclear Medicine" (JSNM), Japanese Journal of Nuclear Medicine (Jpn J Nucl Med) 23(10):1503-1511, October 1986.
- "29th Kanto-Koshinetsu-Hokuriku Regional meeting of the Japanese Circulation Society," Japan Circulation Journal (1963), Vol. 27, No. 12, p. 907.
- Nakagawa, Naofumi et al. (2010). The Japanese Macaques, p. 144., p. 144, at Google Books
- Nihon Denshin Denwa Kabushiki Kaisha. (1995). City Source English Telephone Directory: Greater Tokyo, Tokyo/Yokohama/Chiba, Nagoya, Sapporo, Sendai business directory, p. 887.
- Watanabe, Shō et al. (1995). Cancer Treatment and Survival: Site-Specific Registries in Japan, p. 205., p. 205, at Google Books
- Niigata 1995-2020 population statistics
- Kōshin'etsu subregion 1920-2000 population statistics
- Watanabe, Shō, Suketami Tominaga and Tadao Kakizoe. (1995). Cancer Treatment and Survival: Site-Specific Registries in Japan. Tokyo: Japan Scientific Societies Press. ISBN 9780849377785; ISBN 9784762287961; OCLC 32855122