Siikainen
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Siikainen is a municipality of Finland.
It is located in the province of Western Finland and is part of the Satakunta region. The municipality has a population of 1,866 (2003) and covers an area of 490.98 km² of which 30.58 km² is water. The population density is 4.1 inhabitants per km².
The municipality is unilingually Finnish.