Seinäjoki is a city located in Southern Ostrobothnia, Finland. Seinäjoki originated around the Östermyra bruk iron and gunpowder factories founded in 1798. Seinäjoki became a municipality in 1868, köping in 1931 and town in 1960. In May 2007 it was agreed that the smaller neighbouring municipalities of Nurmo and Ylistaro will me...