It was a part of the Oulu Province, but now located in the region of Northern Ostrobothnia.

It differs from other old northern Ostrobothnian parishes in the sense that it was not formed on a river valley.

Brahe purchased the Salo parish in 1652 and renamed the town to Brahestad (Raahe) after himself.

The municipal system (separation of administrative and religious units) was implemented in 1865, and the Salo parish became two municipalities: Salon kappeliseurakunta or modern Saloinen and Salon emäseurakunta or Pattijoki.

Salon emäseurakunta was still called Salo Ol until 1920, when it was renamed Pattijoki.