Nyūzen (入善町, Nyūzen-machi) is a town in Shimoniikawa District, Toyama Prefecture, Japan. As of 1 May 2018, the town had an estimated population of 25,007 in 8970 households [1] and a population density of 350 persons per km2. The total area of the town was 71.25 square kilometres (27.51 sq mi).

Nyūzen Town Hall
Nyūzen Town Hall
Flag of Nyūzen
Official seal of Nyūzen
Location of Nyūzen in Toyama Prefecture
Location of Nyūzen in Toyama Prefecture
Nyūzen is located in Japan
Coordinates: 36°56′0.7″N 137°30′7.4″E / 36.933528°N 137.502056°E / 36.933528; 137.502056Coordinates: 36°56′0.7″N 137°30′7.4″E / 36.933528°N 137.502056°E / 36.933528; 137.502056
Country Japan
RegionChūbu (Hokuriku)
Prefecture Toyama
 • MayorHaruhito Sasajima
 • Total71.25 km2 (27.51 sq mi)
 (October 1, 2020)
 • Total23,875
 • Density335.1/km2 (868/sq mi)
Time zoneUTC+09:00 (JST)
Postal code
• FlowerTulip
Phone number0765-72-1100
Address3255 Nyūzen, Nyūzen-machi, Shimoniikawa-gun,
WebsiteOfficial website


With the Sea of Japan to the north, and Kurobe River to the west, Nyūzen is in the center of an alluvial fan. The town is known for its jumbo watermelons, as well as its tulips which became the official town flower in 1983.[2]

Groundwater bubbles forth from various manmade and natural springs in the town. Of special interest is a flat area near the coast the name of which translates to: The Japanese Swamp Cedars of Sugisawa (杉沢の沢スギ, Sugisawa no Sawasugi) where a large volume of flowing spring water has created a rare ecosystem that is protected as a natural monument.

Surrounding municipalitiesEdit


Per Japanese census data,[3] the population of Nyūzen has been declining over the past 50 years.

Census Year Population
1970 27,638
1980 29,163
1990 29,625
2000 28,276
2010 27,182
2020 23,875


The town has a Humid subtropical climate (Köppen Cfa) characterized by hot summers and cold winters with heavy snowfall. The average annual temperature in Nyūzen is 13.6 °C. The average annual rainfall is 2225 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.3 °C, and lowest in January, at around 2.5 °C.[4]


The area of present-day Nyūzen was part of ancient Etchū Province. The area was organised as part of Shimoniikawa District, Toyama after the Meiji restoration. The town of Nyūzen was created with merger of seven villages in Shimoniikawa District on October 1, 1953.


Nyūzen has six public elementary schools and two public middle schools operated by the town government, and one public high school operated by the Toyama Prefectural Board of Education.




  National Route 8

Sister city relationsEdit

Local attractionsEdit


  1. ^ Nyūzen town official statistics page(in Japanese)
  2. ^ "Special Products of Nyūzen" (in Japanese). Archived from the original on 2008-06-01. Retrieved 2008-04-11.
  3. ^ Nyūzen population statistics
  4. ^ Nyūzen climate data
  5. ^ http://www.forestgrove-or.gov/archived-news/delegation-returns-from-nyuzen-japan.html
  6. ^ じょうべのま遺跡. Cultural Heritage Online (in Japanese). Agency for Cultural Affairs. Retrieved 25 December 2017.

External linksEdit