Bulungan Regency

Bulungan Regency, formerly known as Bulongan, is a regency of North Kalimantan Province in Indonesia. It covers an area of 13,181.92 km² and had a population of 112,663 at the 2010 Census and 151,844 at the 2020 Census; the official estimate as at mid 2024 was 172,106. The administrative centre is at Tanjung Selor.

History

The modern iteration of Bulongan Regency was established on 26 June 1959, replacing the earlier Special Region of Bulongan which was governed by the Sultanate of Bulungan. It was then one of the founder regencies of East Kalimantan during its establishment in 1956. It is unknown when exactly this regency changed its spelling into the current one.
Bulungan was originally co-extensive with what subsequently became the province of North Kalimantan. On 8 October 1997 the town of Tarakan was cut out of the regency to become an independent city. Two years later, on 4 October 1999, the remaining territory of the regency was split to create two additional regencies - Malinau Regency and Nunukan Regency. On 17 July 2007, three more districts was split from Bulungan Regency to form a new regency, Tana Tidung Regency.
Bulangan Regency had originally been part of the East Kalimantan province, but in 2012 it - together with the areas carved out of it in 1997, 1999 and 2007 - became part of the newly created North Kalimantan province. Tanjung Selor in Bulungan Regency was designated as the province's capital.

Administrative districts

The regency is divided into ten districts, tabulated below with their areas and their populations at the 2010 Census and the 2020 Census, together with the official estimates as at mid 2024. The table also includes the locations of the district administrative centres, the number of administrative villages in each district, and its postal codes.

Kode Wilayah	Name of District	Area in km²	Pop'n Census 2010	Pop'n Census 2020	Pop'n Estimate mid 2024	Admin centre	No. of villages	Post codes
65.01.07	Peso	3,142.79	4,327	4,400	4,259	Long Bia	10	77261
65.01.08	Peso Hilir	1,639.71	3,484	4,134	4,158	Long Tungu	6	77262
65.01.02	Tanjung Palas Barat	1,064.51	5,832	6,416	9,967	Long Beluah	5	77217
65.01.01	Tanjung Palas	1,755.74	14,032	17,556	16,632	Gunung Putih	9	77211; 77214-77216
65.01.05	Tanjung Selor	677.77	39,439	56,569	69,515	Tanjung Selor Hilir	9	77211 & 77212
65.01.04	Tanjung Palas Timur	1,277.81	8,651	18,020	21,530	Tanah Kuning	8	77215
65.01.06	Tanjung Palas Tengah	624.95	7,527	11,567	12,389	Salim Batu	3	77216
65.01.03	Tanjung Palas Utara	806.34	8,954	10,651	11,961	Karang Agung	6	77218
65.01.09	Sekatak	1,993.98	9,278	10,842	12,590	Sekatak Buji	22	77263
65.01.10	Bunyu	198.32	11,139	11,689	12,106	Bunyu Barat	3	77281
	Totals	13,181.92	112,663	151,844	172,106	Tanjung Selor	81

Notes: including 5 offshore islands.
comprising 4 kelurahan and 5 desa. including 7 offshore islands.
comprising 3 kelurahan and 6 desa. including 65 offshore islands. including 10 offshore islands.