Isojoki

Isojoki
Storå
Municipality
Isojoen kunta
Storå kommun
Isojoki church and bell tower
Isojoki church and bell tower
Coat of arms of Isojoki
Location of Isojoki in Finland
Location of Isojoki in Finland
Interactive map of Isojoki
Coordinates: 62°06′50″N 21°57′30″E / 62.11389°N 21.95833°E / 62.11389; 21.95833
Country Finland
RegionSouth Ostrobothnia
Sub-regionSuupohja
Charter1855
Government
 • Municipal managerJuha Herrala
Area
 (2018-01-01)
 • Total
647.43 km2 (249.97 sq mi)
 • Land642.4 km2 (248.0 sq mi)
 • Water5.05 km2 (1.95 sq mi)
 • Rank134th largest in Finland
Population
 (2025-12-31)
 • Total
1,771
 • Rank265th largest in Finland
 • Density2.76/km2 (7.1/sq mi)
Population by native language
 • Finnish94% (official)
 • Swedish0.9%
 • Others5.1%
Population by age
 • 0 to 1411.3%
 • 15 to 6455.1%
 • 65 or older33.7%
Time zoneUTC+02:00 (EET)
 • Summer (DST)UTC+03:00 (EEST)
Websiteisojoki.fi Edit this at Wikidata
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Isojoki (Swedish: Storå; lit. "Big River") is a municipality of Finland. It is part of the South Ostrobothnia region. The city of Pori is located 83 kilometres (52 mi) south of Isojoki. Neighbouring municipalities are Honkajoki, Karijoki, Kauhajoki, Kristinestad, Merikarvia and Siikainen. The population of Isojoki is 1,771 (31 December 2025). The municipality covers an area of 642.4 km2 (248.0 sq mi), of which 5.05 km2 (1.95 sq mi) is inland water (1 January 2018). The population density is 2.76/km2 (7.1/sq mi). The municipality is unilingually Finnish.

Although the area is not very high, one of the highest hills of southern Finland is located here (Lauhanvuori). Many Finns from this area have emigrated to Minnesota, in the USA, as well as Michigan.

Industry: wood, potato, machinery

Tourism: Lauhanvuori National Park (hotel, viewtower, big smoke sauna, historical nature with many relics from ice-age)

Nature: Mostly Forest, swamp and agriculture