Isojoki

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 (30 June 2025).^[2] 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).^[1] The population density is 2.76/km² (7.1/sq mi). The municipality is unilingually Finnish.

Country Finland

Charter1855

Time zoneUTC+02:00 (EET)

Websiteisojoki.fi

Quick facts Storå, Country ...

Isojoki Storå
Municipality
Isojoen kunta Storå kommun
Isojoki church and bell tower
Coat of arms
Location of Isojoki in Finland
Interactive map of Isojoki
Coordinates: 62°06′50″N 21°57′30″E
Country	Finland
Region	South Ostrobothnia
Sub-region	Suupohja
Charter	1855
Government
• Municipal manager	Juha Herrala
Area  (2018-01-01)[1]
• Total	647.43 km2 (249.97 sq mi)
• Land	642.4 km2 (248.0 sq mi)
• Water	5.05 km2 (1.95 sq mi)
• Rank	134th largest in Finland
Population  (2025-06-30)[2]
• Total	1,771
• Rank	265th largest in Finland
• Density	2.76/km2 (7.1/sq mi)
Population by native language [2]
• Finnish	94.4% (official)
• Swedish	0.8%
• Others	4.7%
Population by age [3]
• 0 to 14	11.3%
• 15 to 64	55.1%
• 65 or older	33.7%
Time zone	UTC+02:00 (EET)
• Summer (DST)	UTC+03:00 (EEST)
Website	isojoki.fi

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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.^{[citation needed]}

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