Siikajoki

Siikajoki is a municipality of Finland. It is part of the North Ostrobothnia region. The municipality has a population of () and covers an area of of which is water. The population density is . Neighbour municipalities are Hailuoto, Liminka, Lumijoki, Raahe and Siikalatva.

Ruukki is a former municipality of Finland.

Paavola is a former municipality of Finland, now part of Siikajoki. Its center is located by the Siikajoki river. Though lacking rail transport connections, the settlement lies in the crossroads of routes 86 and 807.

1808 battle of the Finnish War

battle on 1808-04-18