Lumijoki is a municipality of Finland. It is located in the Northern Ostrobothnia region. The municipality has a population of () and covers an area of of which is water. The population density is . Neighbouring municipalities are Hailuoto, Liminka, Oulu and Siikajoki. The municipality is unilingually Finnish. History Lumijoki literally means "snow river", most likely through Lumijärvi, the lake from which the river Lumijoki once began from. Toponyms with the word lumi usually refer to areas where the snow stays for longer than in nearby areas. The village was first mentioned in 1548, when it was a part of the Liminka parish. It gained chapel rights in 1640, eventually becoming an independent parish and municipality in 1867. References External links Municipality of Lumijoki – Official website Populated coastal places in Finland Municipalities of North Ostrobothnia Populated places established in 1867