Rosebery is an outer southern suburb of Palmerston. It is located 26 km SE of the Darwin CBD. Its Local Government Area is the City of Palmerston. This suburb is named after the Fifth Earl of Rosebery, Archibald Philip Primrose, a then British statesman who visited South Australia in 1884. A decade later he became the Prime Minister of the United Kingdom. The Place Names Committee in conjunction with the Palmerston Development Authority decided to perpetuate the Rosebery name as the County of Rosebery fell into disuse and was cancelled on 7 January 1977.