They originally formed the Mdona Hyera District (Kecamatan Mdona Hyera) within the regency, but by 2023 were renamed "Luang Sermata Islands" District.
Other small and generally unpopulated islands form part of the district, including Liakra and Matumara Islands off Luang, Letutun and Lailawan to the west of the main group, Amoertaun and Meatiaram even further to the west, and Metimarang to the southwest.
Sermata Island had 4,003 inhabitants in mid 2023,[1] resident in nine villages - Elo, Rumkisar, Lelang, Mahaleta, Romdara, Rotnama, Batugajah, Pupliora and Regoha.
The whole district covers a land area of 232.29 km2, and had 6,365 inhabitants in mid 2023.
[2] The Luang Sermata Islands District comprises eleven rural villages (desa), all sharing the postcode 97652, listed below with their areas and their populations as officially estimated for mid 2023,[3] together with their postcodes.