Seinäjoki Population 2026
Seinäjoki has a population of 66,848, making it the #16 biggest city in 🇫🇮 Finland, located in South Ostrobothnia. Roughly 1.2% of Finland's population lives here. It is about 9.9× smaller than Helsinki, the country's biggest city.
Population (city proper)
66,848
Rank in Finland
#16
Coordinates
62.79°N, 22.83°E
~50 m elevation · Europe/Helsinki
Distance to capital (Helsinki)
313 km
194 miles, straight line
Other big cities in South Ostrobothnia
Cities near Seinäjoki
FAQ
What is the population of Seinäjoki?
Seinäjoki has a population of 66,848 (city proper, latest official figure via GeoNames), making it the #16 biggest city in Finland.
What region is Seinäjoki in?
Seinäjoki is located in South Ostrobothnia, Finland.
Is Seinäjoki the capital of Finland?
No, the capital of Finland is Helsinki, about 313 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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