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Imizu City Hall
Location of Imizu in Toyama Prefecture
Coordinates: 36°43′50″N 137°4′32″E / 36.73056°N 137.07556°E / 36.73056; 137.07556Coordinates: 36°43′50″N 137°4′32″E / 36.73056°N 137.07556°E / 36.73056; 137.07556
Country Japan
RegionChūbu (Hokuriku)
Prefecture Toyama
 • MayorMotoshi Natsuno
 • Total109.43 km2 (42.25 sq mi)
 (October 1, 2020)
 • Total90,807
 • Density830.0/km2 (2,150/sq mi)
Time zoneUTC+09:00 (JST)
Postal code
• TreeFraxinus japonica
• FlowerDianthus superbus
• Flowering treeHydrangea macrophylla
• FishPasiphaea japonica
Plecoglossus altivelis
Phone number0766-51-6600
Address410-1 Shinkaihotsu, Imizu-shi, Toyama-ken
WebsiteOfficial website
Tonami-yotaka festival held in June
Tonami-yotaka festival held in June

Imizu (射水市, Imizu-shi) is a city located in Toyama Prefecture, Japan. As of 28 February 2018, the city had an estimated population of 93,447 in 37,734 households[1] and a population density of 850 persons per km². Its total area was 109.43 square kilometres (42.25 sq mi).


Imizu is located in the Tonami plains of western Toyama Prefecture, with a coastline on the Sea of Japan to the north. Much of the area is a dispersed settlement typical of this region of Japan. Himi has a humid continental climate (Köppen Cfa) characterized by mild summers and cold winters with heavy snowfall. The average annual temperature in Imizu is 14.0 °C. The average annual rainfall is 2380 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.5 °C, and lowest in January, at around 2.7 °C.[2]

Surrounding municipalities


Per Japanese census data,[3] the population of Imizu has increased over the past 50 years.

Census Year Population
1970 83,631
1980 91,317
1990 92,912
2000 93,513
2010 93,588
2020 90,807


The area of present-day Imizu was part of ancient Etchū Province, and was governed during the Edo period as part of Kaga Domain.

The modern city of Imizu was established on November 1, 2005, from the merger of the city of Shinminato, the towns of Daimon, Kosugi and Ōshima, and the village of Shimo (all from Imizu District). Imizu District was dissolved as a result of this merger.


Imizu has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 22 members.


Businesses headquartered in Imizu

  • Albis, a retail and wholesale company.
  • Toyo Gas Meter


Colleges and universities

Primary and secondary education

Imizu has fifteen public elementary schools and six public middle schools operated by the town government, and three public high schools operated by the Toyama Prefectural Board of Education. The prefectural also operates two vocational schools in Imizu.




Local attractions

Noted people from Imizu


  1. ^ Imizu official home page population data(in Japanese)
  2. ^ Imizu climate data
  3. ^ Imizu population statistics
  4. ^ 小杉丸山遺跡. Cultural Heritage Online (in Japanese). Agency for Cultural Affairs. Retrieved 25 December 2017.
  5. ^ 串田新遺跡 [Kushidashin Iseki] (in Japanese). Agency for Cultural Affairs.
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