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Sanjō (三条市, Sanjō-shi) is a city located in Niigata Prefecture, Japan. As of 30 September 2018, the city had an estimated population of 98,401 in 36,201 households,[1] and a population density of 228 persons per km². The total area of the city was 431.97 square kilometres (166.78 sq mi).


Sanjō City Hall
Sanjō City Hall
Flag of Sanjō
Official seal of Sanjō
Location of Sanjō in Niigata
Location of Sanjō in Niigata
Sanjō is located in Japan
Coordinates: 37°38′12.4″N 138°57′42″E / 37.636778°N 138.96167°E / 37.636778; 138.96167Coordinates: 37°38′12.4″N 138°57′42″E / 37.636778°N 138.96167°E / 37.636778; 138.96167
RegionChūbu (Kōshin'etsu) (Hokuriku)
 • Total431.97 km2 (166.78 sq mi)
 (September 30, 2018)
 • Total98,401
 • Density230/km2 (590/sq mi)
Time zoneUTC+9 (Japan Standard Time)
• TreeJapanese White Pine, Taxus cuspidata
• FlowerLiliaceae, Iris ensata, Sunflower
• BirdChicken (Shiba jidori)
Phone number0256-34-5511
Address2-3-1 Asahi-chō, Sanjō-shi, Niigata-ken 955-8686
WebsiteOfficial website


Sanjō is located in an inland region of north-central Niigata Prefecture. It is about 2 hours from Tokyo via the Jōetsu Shinkansen or 4 hours on the Kan-Etsu Expressway and Hokuriku Expressway. The Shinano River flows through the west of it from south to north and the Ikarashi-gawa River flows through the centre of the urbanised area.

Surrounding municipalitiesEdit


Sanjō has a Humid climate (Köppen Cfa) characterized by warm, wet summers and cold winters with heavy snowfall. The average annual temperature in Sanjō is 12.2 °C. The average annual rainfall is 2202 mm with September as the wettest month. The temperatures are highest on average in August, at around 25.6 °C, and lowest in January, at around 0.1 °C.[2]


Per Japanese census data,[3] the population of Sanjō peaked at around 1985 and has declined steadily since.

Census Year Population
1970 102,220
1980 109,429
1990 110,228
2000 107,662
2010 102,292


The area of present-day Sanjō was part of ancient Echigo Province. During the Edo period, the area was part of Sanjō Domain, a feudal domain under the Tokugawa shogunate from 1598 to 1651. Afterwards, it was divided between Nagaoka Domain, Murakami Domain and tenryō territory administered directly by the shogunate. After the start of the Meiji period, the area was organised as part of Minamikanbara District, Niigata. The town of Sanjō was created with the establishment of the modern municipalities system on April 1, 1889. It was raised to city status on January 1, 1934. Heavy rain causes extensive flooding in 1961 and in 2004. On May 1, 2005, the town of Sakae, and the village of Shitada (both from Minamikanbara District) were merged into Sanjō.


Sanjō has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 22 members.[4]


Sanjō is traditionally known for its iron crafts, notably knives and scissors.

  • Snow Peak (camping manufacture) is headquartered in Sanjō


Sanjō has 25 public elementary schools and nine public middle schools operated by the city government. There are four public high schools operated by the Niigata Prefectural Board of Education, and the prefecture also operates one special education school.


Sister citiesEdit

Notable people from SanjōEdit


  1. ^ Sanjō city official statistics(in Japanese)
  2. ^ Sanjō climate data
  3. ^ Sanjō population statistics
  4. ^ Sanjō City Assembly homepage(in Japanese)
  5. ^ a b "International Exchange". List of Affiliation Partners within Prefectures. Council of Local Authorities for International Relations (CLAIR). Retrieved 8 December 2015.
  6. ^ Chihiro Kaneko
  7. ^ Tetsuji Morohashi Museum

External linksEdit