Ruukki
# Ruukki

Ruukki is a former municipality of Finland.

It is located in the province of Oulu and is part of the Northern Ostrobothnia region. The municipality had a population of 4,505 (31 December 2006) and covered an area of 772.58 square kilometres (298.29 sq mi) of which 5.79 $km^2$ (2.24 sq mi) is water. The population density was 5.88 inhabitants per square kilometre (15.2/sq mi).

The municipality was unilingually Finnish.

In 2007 municipality of Ruukki joined together with Siikajoki.

