Ristijärvi

Ristijärvi
Municipality
Ristijärven kunta
Ristijärvi kommun
Location of Ristijärvi in Finland
Coordinates: 64°30.3′N 028°13′E / 64.5050°N 28.217°E / 64.5050; 28.217
Country Finland
RegionKainuu
Sub-regionKajaani
Charter1867
Government
  Municipal managerPetteri Seppänen
Area
 (2018-01-01)
  Total
897.93 km2 (346.69 sq mi)
  Land835.83 km2 (322.72 sq mi)
  Water62.31 km2 (24.06 sq mi)
  Rank94th largest in Finland
Population
 (2025-03-31)
  Total
1,164
  Rank286th largest in Finland
  Density1.39/km2 (3.6/sq mi)
Population by native language
  Finnish96.3% (official)
  Others3.7%
Population by age
  0 to 1410.2%
  15 to 6451.3%
  65 or older38.5%
Time zoneUTC+02:00 (EET)
  Summer (DST)UTC+03:00 (EEST)
Websitewww.ristijarvi.fi

Ristijärvi is a municipality of Finland. It is part of the Kainuu region. The municipality has a population of 1,164 (31 March 2025), which makes it the smallest municipality in Kainuu in terms of population. It covers an area of 897.93 square kilometres (346.69 sq mi) of which 62.31 km2 (24.06 sq mi) is water. The population density is 1.39 inhabitants per square kilometre (3.6/sq mi). The municipality is unilingually Finnish.

The municipality was named after the Ristijärvi lake, Ristijärvi meaning "Cross Lake", referring to the shape of the lake.