Jämsänkoski

Jämsänkoski is a town in central Finland located near Lake Päijänne and the Jämsänjoki river. Jämsänkoski is the smallest town of Finland, with population of 7,581 (December 31, 2003). It covers an area of 448.67 km² of which 48.02 km² is water. The population density is 16.9 inhabitants per km².

It has a large paper mill which is the largest employer.

Jämsänkoski was founded in 1926 when it separated from the bigger parish of Jämsä. Koskenpää parish was incorporated into Jämsänkoski in the beginning of 1969.

Jämsänkoski has been a township since 1986. It belongs to the administrative district of Western Finland although Central Finland remains the centre for labour and trade.