Karkkila is located in theUusimaaregion. The municipality has a population of 8,444 (31 December 2024)[2] and it covers an area of 255.32 square kilometres (98.58 sq mi) of which 12.95 square kilometres (5.00 sq mi) is inland water (2018-01-01).[1] The population density is 35 inhabitants per square kilometre (91/sq mi) (31 December 2024).
Originally, Karkkila was a village in the municipality of Pyhäjärvi. In the 14th century, the Pyhäjärvi area belonged to the border area of the parishes ofJanakkala andLohja. In 1507, the Pyhäjärvi area became part of theVihti parish, which was separated from the Lohja parish.[5] Pyhäjärvi became the chapel congregation of the Vihti parish in 1654.[5] The place was originally known asPahajärvi ("bad lake"), but the name became established asPyhäjärvi ("holy lake") in the late 17th or 18th century.[5] It was decided to form Pyhäjärvi as an independent parish by a decision of the Imperial Senate in 1861, but the separation did not happen until 1869.[5] Based on the municipal decree of 1865, Pyhäjärvi began its activities as amunicipality in 1868.[6]
Theborough of Karkkila was formed from the center of Pyhäjärvi by separating it from Pyhäjärvi in 1932.[6] The borough area consisted mainly of the villages of Nyhkälä and Karkkila. The growth and industrialization of Karkkila has been affected by the now closed narrow-gaugeHyvinkää–Karkkila railway.[7] Later, the municipality of Pyhäjärvi was merged with the Karkkila borough in 1969.[6] Until now, the municipality and the borough had belonged to the Pyhäjärvi parish, whose name was changed to the Karkkila parish in connection with the municipal association.[5][8] Officially, the Karkkila borough became atown in 1977.[6]
Karkkila is famous for having a strong support of red parties. Up to the municipal elections in 2012, the Left Alliance had always been the most voted party in Karkkila.[9] Inthe 2022 county election of Finland, the Left Alliance rose to the top again making Karkkila the only municipality in Finland where the majority of votes where given to the Left.[10]
Karkkila was a member of theDouzelage, a uniquetown twinning association of 24 towns across theEuropean Union. This active town twinning began in 1991 and there are regular events, such as a produce market from each of the other countries and festivals.[12][13] Karkkila was replaced byAsikkala as the Finnish town in the association in 2016.
^Joutsi, Jukka."Karkkila" (in Finnish). Svala & Joutsi. Retrieved13 February 2021.
^Hannu Tarmio, Pentti Papunen& Kalevi Korpela:Suomenmaa 6: maantieteellis-yhteiskunnallinen tieto- ja hakuteos, pp. 319–321. Porvoo-Helsinki: WSOY, 1976.ISBN951-0-06465-3. (in Finnish)