Banggai Sea Regency () is a regency in the province of Central Sulawesi, Indonesia. The regency was established on 14 December 2012, partitioned from the Banggai Islands Regency. It comprises the southern part of the Banggai Islands archipelago, including the main island of Banggai itself (including 40 offshore islets), the islands of Labobo and Bangkurung to the southwest of Banggai Island, and the numerous small Bowokan Islands (Kepulauan Bokan) to the southeast; it does not include the larger island of Peleng to the north (between Banggai Island and the mainland of Sulawesi) which substantially comprises the residual Banggai Islands Regency.
The new Banggai Sea Regency covers a land area of 725.67 km2 (and an associated marine area of 12,156.78 km2), and the districts now comprising the new Regency had a population of 62,183 at the 2010 CensusBiro Pusat Statistik, Jakarta, 2011. and 70,435 at the 2020 Census;Badan Pusat Statistik, Jakarta, 2021. the official population estimate as at mid 2025 was 78,618 (comprising 39,718 males and 38,900 females).Badan Pusat Statistik, Jakarta, 27 February 2026, Kabupaten Banggai Laut Dalam Angka 2026 (Katalog-BPS 1102001.7211)
Administration The new Banggai Sea Regency is composed of seven districts (kecamatan), tabulated below with their areas and their 2010 Census and 2020 Census populations, together with the official estimates as at mid 2025.Badan Pusat Statistik, Jakarta, 27 February 2026, Kabupaten Banggai Laut Dalam Angka 2026 (Katalog-BPS 1102001.7211) The table also includes the location of the district headquarters, the number of administrative villages in each district (in total, 63 rural desa and 3 urban kelurahan), and its postal codes.
Kode Wilayah Name ofDistrict (kecamatan) Area inkm2 Pop'nCensus2010 Pop'nCensus2020 Pop'nEstimatemid 2025AdmincentreNo.of villagesPostcodes 72.11.04 Bangkurung (island) 116.558,1968,9289,591Lantibung12 (a)94892 72.11.05 Labobo (island) (b) 85.655,3416,0366,430Mansaleang894893 72.11.02 Banggai Utara (North Banggai) 58.056,0077,0427,670Lokotoy694896 72.11.01 Banggai (district) (c) 86.9519,97722,59126,099Lompio1094891 72.11.07 Banggai Tengah (Central Banggai) 68.196,3627,9029.134Adean894895 72.11.06 Banggai Selatan (South Banggai) 81.204,8095,8036,680Matanga694890 72.11.03 Bokan Kepulauan (d) (Bowokan Islands) 229.0811,57112,13313,014Bungin1694894 Totals 725.6762,26370,43578,618 66
Notes: (a) including three kelurahan - Dodung, Lompio, and Tano Bonunungan. (b) including 10 small offshore islands. (c) including 42 small offshore islands. (d) the Bowokan Islands to the southeast of Banggai Island, comprises 91 islands of which the largest is Pulau Salue Besar (Greater Salue Island, formerly Melilis Island); smaller islands include Timpaus, Telapo and Kemal Karaeng.
Climate Banggai has a tropical rainforest climate (Af) with moderate rainfall from September to December and heavy to very heavy rainfall from January to August.
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