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Kamiina (上伊那郡 Kamiina-gun) is a district located in Nagano Prefecture, Japan.
As of May, 2008, the district has an estimated Population of 86,453 and a Density of 168 persons/km². The total area is 514.55 km².
There are 3 towns and 3 villages within the district.
On the other hand, if the cities of Ina and Komagane were included, the area will be known as the Kamiina Region.
- 1878 - The district was founded by the division of Ina District. The seat was located at Ina.
- April 1, 1954 - The towns of Ina merged with the villages of Tomigata, Midori, Shura, Higashiharuchika, and Nishiminowa to form the city of Ina.
- July 1, 1954 - The towns of Akaho and Miyada merged with the villages of Ina and Nakazawa to form the city of Komagane.
- January 1, 1955 - The town of Nakaminowa merged with the villages of Minowa and Higashiminowa to form the town of Minowa.
- April 1, 1955-The town of Tatsuno merged with the village of Asahi to form the new town of Tatsuno.
- September 30, 1956 -
- April 1, 1958 - The town of Takatō absorbed the village of Fujisawa.
- August 1, 1958 - The villages of Nanko and Katado merged to form the village of Nakagawa.
- April 1, 1959 - The villages of Inari and Miwa merged to form the town of Hase.
- March 31, 1961 - The town of Tatsuno absorbed the village of Ono.
- April 1, 1965 - The town of Takatō absorbed the village of Kawanan.
- April 1, 1965 - The city of Ina absorbed the village of Nishiharuchika.
- March 31, 2006 - The town of Takatō and the village of Hase merged with the city of Ina (1st) to form the city of Ina (2nd).
Coordinates: 35°47′46″N 137°51′43″E / 35.796°N 137.862°E