Wikipedia
Haapajärvi
Haapajärvi is a town and municipality of Finland.
It is located in the province of Oulu and is part of the Northern Ostrobothnia region. The town has a population of and covers an area of of which is water. The population density is .
Neighbour municipalities are Haapavesi, Kärsämäki, Nivala, Pihtipudas, Pyhäjärvi, Reisjärvi and Sievi.
The municipality is unilingually Finnish.