Oulainen
- 📍 Location: North Ostrobothnia region,
Ylivieska sub-region - 👥 Population (municipality): 6,832 (Dec 31, 2025)
- 🏛️ Founded:
- 📏 Area: 586.6 km² (land area)
- ⏰ Time zone: EET (UTC +2, DST EEST +3)
- 💰 Currency: Euro (EUR)
Answers to frequently asked questions
What is the population of Oulainen?
The population of Oulainen was 6,832 on Dec 31, 2025 (Statistics Finland), a change of -4.5% since 2020.
Which region is Oulainen in?
Oulainen is in the North Ostrobothnia region, Ylivieska sub-region.
Is Oulainen a city?
Yes, Oulainen has city status.
What are the official languages of Oulainen?
Official language: Finnish (a monolingual Finnish-speaking municipality). Swedish speakers make up 0.1% and speakers of other languages 2.7% of residents (Dec 31, 2025).
How many businesses are there in Oulainen?
Oulainen had 740 business establishments in 2024, including 51 retail outlets (Statistics Finland).
How large is Oulainen?
The land area is 586.6 km² and the population density 11.6 residents per km² (Dec 31, 2025).
How many people in Oulainen live in built-up areas?
75.1% of residents lived in built-up areas (taajama) in 2024; there are 2 such areas (Statistics Finland).