The present municipality was created during the local government reform in the early 1970s. In 1971 the City of Vänersborg became a municipality of unitary type and three years later it was amalgamated with three surrounding municipalities. The number of original local government entities (as of 1863) is eight.
This is a demographic table based on Vänersborg 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 39,574 residents, including 30,181 Swedish citizens of voting age.[3] 47.4% voted for the left coalition and 51.3% for the right coalition. Indicators are in percentage points except population totals and income.