Pielavesi is a municipality of Finland. It is part of the Northern Savonia region. The municipality has a population of 3,993 (31 August 2024) and covers an area of 1,406.51 square kilometres (543.06 sq mi) of which 253.27 km2 (97.79 sq mi) is water. The population density is 3.46 inhabitants per square kilometre (9.0/sq mi). The municipality is unilingually Finnish.
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