In 1969 the municipality got its present size when "old" Lerum was amalgamated with Skallsjö and Stora Lundby.
In 2007, Lerum Municipality launched a new logotype to be used instead of its official municipal coat of arms which features the head of an ox and three oak leaves.[3] Municipal officials and PR staff felt the coat "outdated". Although no longer used, the coat of arms still has official status. The new logotype features a multi-coloured weaving pattern.
This is a demographic table based on Lerum Municipality's electoral districts in the 2022 Swedish general election sourced from SVT's election platform, in turn taken from SCB official statistics.[4]
In total there were 43,372 residents, including 31,378 Swedish citizens of voting age.[4] 45.1% voted for the left coalition and 54.0% for the right coalition. Indicators are in percentage points except population totals and income.
