Kiiminki (Swedish: Kiminge) was a municipality of Finland. Along with Haukipudas, Oulunsalo and Yli-Ii municipalities it was merged with the city of Oulu on 1 January 2013. Kiiminki municipality was part of the Oulu province in the Northern Ostrobothnia region. The municipality had a population of 13,320 (31 December 2012) and covered an area of 339.00 square kilometres (130.89 sq mi) of which 326.82 kmÂ² (126.19 sq mi) is water. The population density is 1,093.6/kmÂ² (2,832.4/sq mi).