Jämsä
- 📍 Location: Central Finland region,
Jämsä sub-region - 🌊 Sea or lake: Päijänne
- 👥 Population (municipality): 19,020 (Dec 31, 2025)
- 🏛️ Founded:
- 📏 Area: 1,571.4 km² (land area)
- ⏰ Time zone: EET (UTC +2, DST EEST +3)
- 💰 Currency: Euro (EUR)
- 🧑🤝🧑 Demonym: jämsäläinen
Answers to frequently asked questions
What is the population of Jämsä?
The population of Jämsä was 19,020 on Dec 31, 2025 (Statistics Finland), a change of -4.4% since 2020.
Which region is Jämsä in?
Jämsä is in the Central Finland region, Jämsä sub-region.
Is Jämsä a city?
Yes, Jämsä has city status.
What are the official languages of Jämsä?
Official language: Finnish (a monolingual Finnish-speaking municipality). Swedish speakers make up 0.1% and speakers of other languages 4.9% of residents (Dec 31, 2025).
How many businesses are there in Jämsä?
Jämsä had 2,306 business establishments in 2024, including 131 retail outlets (Statistics Finland).
How large is Jämsä?
The land area is 1,571.4 km² and the population density 12.1 residents per km² (Dec 31, 2025).
How many people in Jämsä live in built-up areas?
74.9% of residents lived in built-up areas (taajama) in 2024; there are 5 such areas (Statistics Finland).