Seinäjoki: population and statistics
Seinäjoki has a population of 67,283 (2025) across 1,431.6 km², or 47.0 people per km². It ranks 16 of 308 municipalities by population. Its population is growing: +9.3% between 2015 and 2025.
- 67,283 residents
- 1,431.6 km²
- 47 people/km²
- 51 m
Seinäjoki in numbers
Key points
Among the 18 municipalities in South Ostrobothnia, Seinäjoki ranks No. 1 by population.
Largest business sector: Health and social work, with 26.1% of the area's jobs.
A 1 kWp solar panel tilted at 45° generates about 858 kWh a year here.
Did you know?
- Number 1 in South Ostrobothnia for “Population”.
- Number 1 in South Ostrobothnia for “Population density”.
- “Active companies in the business register (excluding sole traders)”: higher than in 97% of municipalities.
- “Share of residential buildings heated with district heating”: higher than in 96% of municipalities.
- “Persons employed in the area (jobs)”: higher than in 96% of municipalities.
- Its area is roughly equal to 200,503 football pitches.
- Its population density is 2.5 times the national average.
Population of Seinäjoki over time
Seinäjoki had 61,530 residents in 2015 and 67,283 in 2025.
| Year | Population |
|---|---|
| 2020 | 64,130 |
| 2021 | 64,736 |
| 2022 | 65,323 |
| 2023 | 66,160 |
| 2024 | 66,611 |
| 2025 | 67,283 |
All indicators for Seinäjoki
Value for the municipality, then the regional average and the national median (for counts: regional and national totals). The gauge places the municipality between the lowest and highest value in the country.
Population
| Indicator | Seinäjoki | South Ostrobothnia | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged under 15 (2025) | 16.0% | 14.9% | 13.3% | ranked 63 of 302 | |
| Share of people aged 65 and over (2025) | 21.2% | 27.7% | 31.2% | ranked 272 of 302 | |
| Mean age of the population (2025) | 41.7 years | 45.7 | 48.5 | ranked 279 of 302 | |
| Share of Swedish speakers (2025) | 0.2% | 0.3% | 0.3% | ranked 154 of 302 | |
| Share of foreign nationals (2025) | 4.7% | 3.9% | 3.4% | ranked 90 of 302 |
Housing
| Indicator | Seinäjoki | South Ostrobothnia | National | Position? | Rank |
|---|---|---|---|---|---|
| Total dwellings (2025) | 37,601 no. | 109,577 no. | 3,258,449 no. | ranked 17 of 308 | |
| Share of dwellings built before 1940 (2025) | 2.8% | – | 8.2% | ranked 259 of 302 | |
| Share of dwellings built after 2000 (2025) | 39.3% | – | 14.5% | ranked 16 of 302 | |
| Share of dwellings in detached and semi-detached houses (2025) | 38.1% | – | 64.5% | ranked 274 of 302 | |
| Share of dwellings in blocks of flats (2025) | 37.6% | – | 11.1% | ranked 44 of 302 | |
| Share of dwellings not permanently occupied (2025) | 10.4% | – | 16.9% | ranked 253 of 302 | |
| Free-time residential buildings per 1,000 inhabitants (2025) | 11.8 /1,000 inh. | 67.9 /1,000 inh. | 186.3 /1,000 inh. | ranked 284 of 302 |
Energy
| Indicator | Seinäjoki | South Ostrobothnia | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of residential buildings heated with district heating (2025) | 26.5% | – | 3.9% | ranked 13 of 302 | |
| Share of residential buildings heated with electricity (2025) | 33.3% | – | 39.8% | ranked 259 of 302 | |
| Share of residential buildings heated with geothermal heat (2025) | 7.0% | – | 5.5% | ranked 107 of 302 | |
| Share of residential buildings heated with oil or gas (2025) | 19.4% | – | 17.1% | ranked 113 of 302 | |
| Share of residential buildings heated with wood or peat (2025) | 13.8% | – | 29.1% | ranked 244 of 302 |
Economy
| Indicator | Seinäjoki | South Ostrobothnia | National | Position? | Rank |
|---|---|---|---|---|---|
| Business establishments (2024) | 7,413 no. | 26,415 no. | 600,547 no. | ranked 12 of 308 | |
| Business establishments per 1,000 inhabitants (2024) | 111.3 /1,000 inh. | 138.9 /1,000 inh. | 141.7 /1,000 inh. | ranked 226 of 302 | |
| Median disposable cash income per consumption unit (2024) | 29,989 €/year | – | 29,044 €/year | ranked 102 of 302 | |
| Price per m² of old dwellings in housing companies (2025) | 1,960 €/m² | – | 1,110 €/m² | ranked 31 of 220 | |
| Active companies in the business register (excluding sole traders) (2026) | 3,827 per 1,000 inh. | 11,080 per 1,000 inh. | 335,854 per 1,000 inh. | ranked 11 of 308 | |
| Active companies in the register per 1,000 inhabitants (excluding sole traders) (2026) | 56.9 per 1,000 inh. | 58.5 per 1,000 inh. | 53.9 per 1,000 inh. | ranked 130 of 302 | |
| Companies registered in the last 12 months per 1,000 inhabitants (2026) | 3.3 per 1,000 inh. | 2.8 per 1,000 inh. | 2.7 per 1,000 inh. | ranked 96 of 302 |
Employment
| Indicator | Seinäjoki | South Ostrobothnia | National | Position? | Rank |
|---|---|---|---|---|---|
| Persons employed in the area (jobs) (2024) | 33,847 no. | 76,800 no. | 2,423,433 no. | ranked 13 of 308 | |
| Unemployed as a share of the labour force (2024) | 9.0% | 8.8% | 10.8% | ranked 205 of 302 | |
| Employment rate (aged 20–64) (2024) | 77.5% | 77.3% | 75.4% | ranked 105 of 302 |
Tourism
| Indicator | Seinäjoki | South Ostrobothnia | National | Position? | Rank |
|---|---|---|---|---|---|
| Beds in accommodation establishments per 1,000 inhabitants (2025) | 21.1 /1,000 inh. | 27.5 /1,000 inh. | 36.4 /1,000 inh. | ranked 91 of 136 |
Transport
| Indicator | Seinäjoki | South Ostrobothnia | National | Position? | Rank |
|---|---|---|---|---|---|
| Passenger cars per 1,000 inhabitants (2025) | 571 /1,000 inh. | 596 /1,000 inh. | 580 /1,000 inh. | ranked 170 of 302 |
Society
| Indicator | Seinäjoki | South Ostrobothnia | National | Position? | Rank |
|---|---|---|---|---|---|
| At-risk-of-poverty rate (2024) | 12.9% | 13.7% | 14.3% | ranked 191 of 302 |
Education
| Indicator | Seinäjoki | South Ostrobothnia | National | Position? | Rank |
|---|---|---|---|---|---|
| Share of people aged 15 and over with a tertiary-level qualification (2024) | 34.7% | 27.7% | 24.1% | ranked 33 of 302 |
Business sectors: Seinäjoki
Share of each sector in total jobs; “×1.5” means the sector is 1.5 times more common than nationally.
- Health and social work26.1% ×1.4
- Manufacturing14.5% ×1.2
- Wholesale and retail trade11.6% ×1.1
- Construction6.5% ×1.0
- Education6.1% ×0.8
- Transport and storage5.9% ×1.1
- Administrative and support services5.8% ×0.8
- Professional, scientific and technical4.5% ×0.7
Sunshine and temperatures: Seinäjoki
Where is Seinäjoki?
Frequently asked questions
What is the population of Seinäjoki?
Seinäjoki has 67,283 residents (2025), ranking 16 of 308 municipalities.
How big is Seinäjoki?
Seinäjoki covers 1,431.6 km², with a density of 47 people per km².
Is the population of Seinäjoki growing?
Between 2015 and 2025, the population of Seinäjoki went from 61,530 to 67,283, a change of +9.3%.
Where is Seinäjoki?
Seinäjoki is in South Ostrobothnia. Latitude 62.790, longitude 22.840.
Active companies in the business register (excluding sole traders): what is the figure for Seinäjoki?
In Seinäjoki, “Active companies in the business register (excluding sole traders)” stands at 3,827 per 1,000 inh. (2026), ranking 11 of 308 municipalities; the national median is 312 per 1,000 inh..
Share of residential buildings heated with district heating: what is the figure for Seinäjoki?
In Seinäjoki, “Share of residential buildings heated with district heating” stands at 26.5% (2025), ranking 13 of 302 municipalities; the national median is 3.9%.
How much electricity does a solar panel produce in Seinäjoki?
In Seinäjoki, a 1 kWp south-facing system tilted at 45° produces about 858 kWh a year.
Which municipalities border Seinäjoki?
The nearest to Seinäjoki are Ilmajoki (15 km), Lapua (22 km), Kurikka (30 km), Kuortane (34 km), Isokyrö (35 km).
Coat of arms: Public domain, Wikimedia Commons. Coats of arms and flags are shown for identification only; this site is not affiliated with any public authority.
