Sarashina (更級郡; -gun) was a district located in Nagano Prefecture, Japan. The district (郡; gun) was most recently used as an administrative unit in Japan between 1878 and 1921 and is roughly equivalent to the county of the United States. ... Nagano Prefecture (長野県; Nagano-ken) is located on Honshu island, Japan. ...

As of 2003, the district had an estimated population of 1,467 and a density of 31.99 persons per km². The total area was 45.86 km². 2003 (MMIII) was a common year starting on Wednesday of the Gregorian calendar. ... World map of the population density in 2006 Population density is a measurement of population per unit area or unit volume. ... Square kilometre (US spelling: Square kilometer), symbol km², is an SI unit of surface area. ...

Former towns and villages

• Kamiyamada
• Ooka

Oōka (大岡村; -mura) is a village located in Sarashina District, Nagano, Japan. ...

Mergers

• On September 1, 2003, the town of Kamiyamada merged into the city of Chikuma.

• On January 1, 2005, the village of Ooka merged into the city of Nagano. Sarashina District was dissolved as a result.