The area is a political stronghold for the Centre Party which usually gains around 50 percent of the votes.
As the ice receded during the last glacial period parts of Svartrå formed a bay.
Some remains from the Stone Age have been found, such as flint objects and arrow points.
The village was split up due to agricultural reforms in the mid 19th century (laga skifte).
Svartrå has never been home to any major industrial activity, although it has had a few minor sawmills as well as a gravel pit.