Ostrobothnia is a region in Finland located in the western part of Finland and borders the regions of Central Ostrobothnia, Southern Ostrobothnia, and Satakunta. It is one of the four regions making up the historical province of Ostrobothnia.
Ostrobothnia extends form north of the city of Pori deep into the far north of Finland. In the west of the Gulf of Bothnia serves as its border, and in the east it extends to the Soumenselka ridge.
Ostrobothnia covers an area along the coast from Kristinestad to Pedersore and extends about 150 km to the east. The inhabitants speak Swedish, and in the east of the area Finnish is spoken.
The first towns in Ostrobothnia are believed to have been established in the 17th century. In 1809 Ostrobothnia was separated from Sweden along with the rest of Finland. Ostrobothnia boast of settlement that dates back from 12,000 years back and its population has evolved from hunters and gatherers to agrarian.