Isokyrö

Isokyrö
Storkyro
Municipality
Isokyrön kunta
Storkyro kommun
Isokyrö Church
Location of Isokyrö in Finland
Interactive map of Isokyrö
Coordinates: 63°00′N 022°19′E / 63.000°N 22.317°E / 63.000; 22.317
Country Finland
RegionSouth Ostrobothnia
Sub-regionSeinäjoki
Charter1785
Government
 • Municipality managerTero Kankaanpää
Area
 (2018-01-01)
 • Total
356.91 km2 (137.80 sq mi)
 • Land354.13 km2 (136.73 sq mi)
 • Water2.79 km2 (1.08 sq mi)
 • Rank216th largest in Finland
Population
 (2025-06-30)
 • Total
4,296
 • Rank184th largest in Finland
 • Density12.13/km2 (31.4/sq mi)
Population by native language
 • Finnish97.3% (official)
 • Swedish0.7%
 • Others2%
Population by age
 • 0 to 1416.1%
 • 15 to 6455.4%
 • 65 or older28.5%
Time zoneUTC+02:00 (EET)
 • Summer (DST)UTC+03:00 (EEST)
Websiteisokyro.fi

Isokyrö (Finnish: [ˈisoˌkyrø]; Swedish: Storkyro) is a municipality of Finland. It is located in the South Ostrobothnia region, 43 kilometres (27 mi) from Vaasa. The municipality has a population of 4,296 (30 June 2025) and covers an area of 356.91 square kilometres (137.80 sq mi) of which 2.79 km2 (1.08 sq mi) is water. The population density is 12.13 inhabitants per square kilometre (31.4/sq mi).

In the name of the municipality, "iso" means big; "kyrö", on the other hand, is a Tavastian dialect and means a quarry, rocky or rugged terrain for hiding. The municipality is unilingually Finnish.

According to Traficom, Isokyrö is the most motorized municipality in Finland with 718 cars per thousand inhabitants.