It is located in the province of Western Finland and is part of the Central Finland region. The municipality has a population of 20,589 (31 January 2019)[2] and covers an area of 1,823.90 square kilometres (704.21 sq mi) of which 252.57 km2 (97.52 sq mi) is water.[1] There are all together around 465 lakes in Jämsä. The largest lakes are Päijänne, Koljonselkä and Lake Kuorevesi.[6] The population density is 13.1 inhabitants per square kilometre (34/sq mi).

Jämsän kaupunki
Jämsä stad
Jämsänkoski Rapids

Coat of arms
Location of Jämsä in Finland
Coordinates: 61°52′N 025°11′E
Country Finland
RegionCentral Finland
Sub-regionJämsä sub-region
  Town managerTapani Mattila
  Total1,823.90 km2 (704.21 sq mi)
  Land1,571.34 km2 (606.70 sq mi)
  Water252.57 km2 (97.52 sq mi)
Area rank39th largest in Finland
  Rank52nd largest in Finland
  Density13.1/km2 (34/sq mi)
Population by native language
  Finnish98.8% (official)
Population by age
  0 to 1415.9%
  15 to 6462.7%
  65 or older21.4%
Time zoneUTC+02:00 (EET)
  Summer (DST)UTC+03:00 (EEST)
Municipal tax rate[5]21%

Jämsä is a town and municipality of Finland.

The municipality is Finnish.

The municipality of Kuorevesi was consolidated with Jämsä in 2001. The municipality of Längelmäki was partly consolidated with Jämsä in 2007. The municipality of Jämsänkoski was consolidated with Jämsä in the beginning of 2009.

It is the center of Finnish aeronautics industry – the aircraft factory and aeronautical engineering offices of Patria is located at Halli Airport in Jämsä.

Since 1994, the ski slope at Himos has been used as a super special stage at the Rally Finland.

Twin cities


  1. "Area of Finnish Municipalities 1.1.2018" (PDF). National Land Survey of Finland. Retrieved 30 January 2018.
  2. "Suomen virallinen tilasto (SVT): Väestön ennakkotilasto [verkkojulkaisu]. Tammikuu 2019" (in Finnish). Statistics Finland. Retrieved 15 March 2019.
  3. "Population according to language and the number of foreigners and land area km2 by area as of 31 December 2008". Statistics Finland's PX-Web databases. Statistics Finland. Retrieved 29 March 2009.
  4. "Population according to age and gender by area as of 31 December 2008". Statistics Finland's PX-Web databases. Statistics Finland. Retrieved 28 April 2009.
  5. "List of municipal and parish tax rates in 2011". Tax Administration of Finland. 29 November 2010. Retrieved 13 March 2011.
  6. "Jämsä". Järviwiki. Finland's Environmental Administration. 2012. Retrieved 27 February 2012.
  7. "Ystävyyskaupungit" (in Finnish). Suomalais-venäläinen kauppakamari. Archived from the original on 19 September 2012. Retrieved 7 May 2012.
  8. "Jämsä" (in Finnish). Suomen kaupunkiopas. Retrieved 7 May 2012.

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