Isojoki
- 📍 Location: South Ostrobothnia region,
Suupohja sub-region - 👥 Population (municipality): 1,771 (Dec 31, 2025)
- 🏛️ Founded:
- 📏 Area: 642.4 km² (land area)
- ⏰ Time zone: EET (UTC +2, DST EEST +3)
- 💰 Currency: Euro (EUR)
Answers to frequently asked questions
What is the population of Isojoki?
The population of Isojoki was 1,771 on Dec 31, 2025 (Statistics Finland), a change of -8.0% since 2020.
Which region is Isojoki in?
Isojoki is in the South Ostrobothnia region, Suupohja sub-region.
Is Isojoki a city?
No, Isojoki is a municipality without city status.
What are the official languages of Isojoki?
Official language: Finnish (a monolingual Finnish-speaking municipality). Swedish speakers make up 0.9% and speakers of other languages 5.1% of residents (Dec 31, 2025).
How many businesses are there in Isojoki?
Isojoki had 403 business establishments in 2024, including 8 retail outlets (Statistics Finland).
How large is Isojoki?
The land area is 642.4 km² and the population density 2.8 residents per km² (Dec 31, 2025).
How many people in Isojoki live in built-up areas?
44.1% of residents lived in built-up areas (taajama) in 2024; there are 1 such areas (Statistics Finland).