The municipality evolved during a series of local government reforms in the 1950s and 1970s. It consists of six original entities and has its present shape since 1977.
Geography
Through the municipality, from north to southeast, runs the river Ljusnan. Among the localities situated at the river are Bollnäs and Arbrå. South of Bollnäs is the confluence of Ljusnan and its biggest tributaryVoxnan.
Nearby the town of Bollnäs are several water areas with fish such as trout, bass and pike. The streams Ljusnan and Voxnan also offer fishing, as does the tributary lake Vågen in Bollnäs.
A total of 1,461 acres (5.91 km2) of the land in the municipality (0.8% of the municipality's area) are considered protected nature, for instance there are six nature reserves within the municipality's borders.[5][6]
Eight areas are included in Natura 2000. Four of these are also nature reserves – Djupsjön/Römmaberget, Galvån, Grossjöberget and Hästhagsberget – and the other four are Andersvallsslåtten, Haga, Myrsjömyrorna and Tomtas.[13]
Outside Växbo, 15 km northeast of Bollnäs, Växbo lin ("Växbo linen"), Växbo kvarn ("Växbo Mill") and Trolldalen is situated. Växbo lin is the only remaining spinnery and weavers of linen in Scandinavia. Växbo kvarn is a water mill from the 19th century (reopened in 1985) where flour is ground using old techniques. Trolldalen displays old tools from the 19th century, tools used for processing linen.[15]
Since 1997, the workgroup Kulturarv Hälsingegårdar has been active with the goal to get 15 villages/farms in Hälsingland declared World Heritage Sites by UNESCO. The villages and farms listed demonstrates examples of the traditional architecture of Hälsingland. On the list are among others Västerby hembygdsby, Växbo kvarn and Trolldalen. In 2006, the County Administrative Board of Gävleborg County handed over the documents concerning the issue to the Swedish National Heritage Board. UNESCO has received the inquiry and will make a decision in July 2009, at the earliest.[16]
Demographics
This is a demographic table based on Bollnäs Municipality's electoral districts in the 2022 Swedish general election sourced from SVT's election platform, in turn taken from SCB official statistics.[17]
In total there were 20,585 Swedish citizens of voting age resident in the municipality.[17] 51.6 % voted for the left coalition and 47.3 % for the right coalition. Indicators are in percentage points except population totals and income.
Timo K. Mukka (1944–1973), Finnish writer, was born in Bollnäs, whereto his family had been evacuated from the Finnish province of Lapland region during the Lapland War.