General information thumb|left|Flatval, Frøya municipality The parish of Frøya was established as a municipality on 1 January 1877 when it was separated from Hitra Municipality. Its initial population was 3,949. On 1 January 1906, it was split into two municipalities: Nord-Frøya Municipality in the north and Sør-Frøya Municipality in the south. During the 1960s, there were many municipal mergers across Norway due to the work of the Schei Committee. On 1 January 1964, the municipalities of Nord-Frøya and Sør-Frøya were merged back together again, forming a new Frøya Municipality. On 1 January 2018, the municipality switched from the old Sør-Trøndelag county to the new Trøndelag county.
GEneral iNForMAtIon THUmb|left|flatvaL frøyA MunIcipAliTy the Parish oF frØya was eSTAbLisheD as A munIcipAliTY oN 1 janUary 1877 WhEN It was separAteD from hiTRa munIcipalITy. its INiTial popuLatioN WaS 3,949. on 1 jaNUary 1906, it wAS splIt Into two MUnicipalitieS: norD-fRØya municipalItY In The nORth aNd søR-fRøYa mUnicipAlItY iN the sOuTh. DuriNg tHe 1960S, TheRe werE manY municIPal MergeRs Across noRway Due to the work Of The scHei ComMIttEe. oN 1 janUArY 1964, The MUniCipaLitIEs Of nOrd-frØyA and sØR-frøya wEre mErgeD baCK toGether AGaiN forMing a new frøya municiPalitY. on 1 januaRy 2018, the municipAlity switCHed froM the old sØr-trØnDELag coUnTy To ThE New trØndelag CounTy.