The present municipality was formed in 1969 through the amalgamation of the City of Härnösand with Säbrå (itself created in 1952 when five former entities were merged) and Högsjö.

This is a demographic table based on Härnösand Municipality's electoral districts in the 2022 Swedish general election sourced from SVT's election platform, in turn taken from SCB official statistics.

[3] Residents include everyone registered as living in the district, regardless of age or citizenship status.

Valid voters indicate Swedish citizens above the age of 18 who therefore can vote in general elections.

[3] 59.6% voted for the left coalition and 39.2% for the right coalition.Indicators are in percentage points except population totals and income.