Kiiminki is located about north-east 20 kilometers (12 mi) from the Oulu city centre, in the province of Oulu and is part of the Northern Ostrobothnia region. The municipality has a population of 13,293 (30 September 2012) and covers an area of 339.00 square kilometers (130.89 sq mi) of which 326.82 km2 (126.19 sq mi) is water. The population density is 40.67 inhabitants per square kilometre (105.3 /sq mi)