Lake Reisenji and Mount Iizuna
Lake Reisenji and Mount Iizuna
Flag of Iizuna
Official seal of Iizuna
Location of Iizuna in Nagano Prefecture
Location of Iizuna in Nagano Prefecture
Iizuna is located in Japan
Coordinates: 36°45′17.2″N 138°14′7.9″E / 36.754778°N 138.235528°E / 36.754778; 138.235528Coordinates: 36°45′17.2″N 138°14′7.9″E / 36.754778°N 138.235528°E / 36.754778; 138.235528
RegionChūbu (Kōshin'etsu)
 • Total75.00 km2 (28.96 sq mi)
 (March 2019)
 • Total11,115
 • Density150/km2 (380/sq mi)
Time zoneUTC+9 (Japan Standard Time)
• TreeSakura
• FlowerApple
Phone number026-253-2511
Address2795-1 Mure, Iizuna-machi, Kamiminochi-gun, Nagano-ken 389-1293
WebsiteOfficial website
Iizuna Town Hall

Iizuna (飯綱町, Iizuna-machi) is a town located in the Kamiminochi District of norther Nagano Prefecture, Japan. As of 31 March 2019, the town had an estimated population of 11,115 in 4187 households,[1] and a population density of 150 persons per km2. the total area of the town is 75.00 square kilometres (28.96 sq mi).


Iizuna is located in northern Nagano Prefecture. It is 13.9 km from east to west and 15.6 km in the south north. The Yaja River that flows from the Mount Reisenji forms the western border of the town which is located on its river terrace. The Torii River flows through the center of town. The Madarao River flows from Shinano, and flows on the north side of this town. It joins the Chikuma River via the Nakano city in the east.


The village has a climate characterized by hot and humid summers, and cold winters (Köppen climate classification Cfa). The average annual temperature in Iizuna is 11.3 °C. The average annual rainfall is 1254 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 -1.5 °C.[2]

Surrounding municipalities


Per Japanese census data,[3] the population of Iizuna was relatively stable throughout the late 20th century but has declined in recent decades.

Historical population
1940 12,533—    
1950 15,503+23.7%
1960 13,845−10.7%
1970 12,473−9.9%
1980 12,000−3.8%
1990 12,830+6.9%
2000 13,062+1.8%
2010 11,865−9.2%
2020 10,296−13.2%


The area of present-day Iizuna was part of ancient Shinano Province. During the Edo period, Mure developed as a post station on the Hokkoku Kaidō highway.

The modern town was created through a merger of the villages of Samizu and Mure on October 1, 2005. Its name comes from Mount Iizuna which dominates the town's western sky.


The economy of Iizuna is agricultural, primarily rice cultivation and horticulture.


Iizuna has four public elementary schools and one public middle school operated by the town government, and one high school operated the Nagano Prefectural Board of Education.

High school

  • Nagano Prefectural Hokubu High School.[4]

Junior high school

  • Iizuna Junior High School

Elementary schools

  • Iizuna Choritsu Murehigashi Elementary School
  • Iizuna Choritsu Murehinishi Elementary School
  • Iizuna Choritsu Samizudaiichi Elementary School
  • Iizuna Choritsu Samizudaini Elementary School




Local attractions


  1. ^ Iizuna Town official statistics(in Japanese)
  2. ^ Iizuna climate data
  3. ^ Iizuna population statistics
  4. ^ 長野県北部高等学校 (in Japanese). Retrieved 2019-05-01.

External links

  • Media related to Iizuna, Nagano at Wikimedia Commons
  • Official Website (in Japanese)

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