Oulu sub-region
Oulu sub-region is a subdivision of North Ostrobothnia and one of the sub-regions of Finland since 2009. The Oulu region has a population of, making it the fourth largest region in Finland after Helsinki, Tampere and Turku.
Municipalities
| Coat of arms | Municipality | Population | Land area | Density | Finnish speakers | Swedish speakers | Other speakers |
| Hailuoto | % | % | % | ||||
| Kempele | % | % | % | ||||
| Liminka | % | % | % | ||||
| Lumijoki | % | % | % | ||||
| Muhos | % | % | % | ||||
| Oulu | % | % | % | ||||
| Tyrnävä | % | % | % | ||||
| Total | % | % | % | - |