Karvia is a municipality of Finland founded in 1865. It is located in the province of Western Finland and is part of the Satakunta region. The population of Karvia is 2,309 (31 March 2021) and the municipality covers an area of 501.90 km2 (193.78 sq mi) of which 17.90 km2 (6.91 sq mi) is inland water (1 January 2018). The population density is 4.6/km2 (12/sq mi). Twin town of Karvia is Viru-Nigula in Estonia since 1994.
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