The subdivision reform of 1952 saw the amalgamation of "old" Ovanåker with Voxna (both formed by the first local government acts of 1862). In 1977 Alfta (which 1974-1976 had been in Bollnäs Municipality) was added.
tHe sUbdiviSion reFoRm Of 1952 SAw THe amaLgamatIOn of "old" OvanåkEr wiTH VoXna (both formEd By ThE fiRst Local GoverNMent ACtS Of 1862) in 1977 alfTa (Which 1974-1976 had bEen in BoLLnÄs mUnicipaLity) waS Added