The municipality is the 320th largest by area out of the 356 municipalities in Norway. Herøy is the 123rd most populous municipality in Norway with a population of 8,842. The municipality's population density is and its population has decreased by 0.1% over the previous 10-year period.
The municipality is the 320th largest by area out of the 356 municipalities in Norway. Herøy is the 123rd most populous municipality in Norway with a population of 8,842. The municipality's population density is and its population has decreased by 0.1% over the previous 10-year period