The electorate was created in 1856 for the First Parliament under the name Maneroo, derived from an Aboriginal name for the area, now spelt Monaro. It was renamed Monaro for the second Parliament in February 1858. It elected two members between 1880 and 1894. In 1894, single-member electorates were introduced state-wide and part of the electorate, (including Bombala), was absorbed into Eden-Bombala. In 1913, it absorbed much of the Electoral district of Queanbeyan, including Queanbeyan, which is its major city. In 1920, with the introduction of proportional representation, it was absorbed into Goulburn, along with Bega. It was recreated in 1927.