The first municipality named Forshaga was a market town (köping) which was detached from Grava in 1944. The local government reform of the 1970s made Forshaga a unitary municipality in 1971 and in 1974 Ullerud was added to it.
Forshaga was known in the 14th century as a location for salmonfishing in the riverKlarälven. Salmon was used both locally and transported to monasteries in southern Sweden. Forshaga is still known for its rich fishing waters, which attract hobby sport fishers from all over the country.
This is a demographic table based on Forshaga Municipality's electoral districts in the 2022 Swedish general election sourced from SVT's election platform, in turn taken from SCB official statistics.[3]
In total there were 11,590 residents, including 8,824 Swedish citizens of voting age.[3] 49.7% voted for the left coalition and 49.2% for the right coalition. Indicators are in percentage points except population totals and income.