Mahakam Ulu Regency

Mahakam Ulu Regency
Kabupaten Mahakam Ulu
Regency
A cliff above the Mahakam river
A cliff above the Mahakam river
Official seal of Mahakam Ulu Regency
Seal
Location within East Kalimantan
Location within East Kalimantan
Mahakam Ulu Regency is located in Kalimantan
Mahakam Ulu Regency
Mahakam Ulu Regency
Location in Kalimantan and Indonesia
Mahakam Ulu Regency is located in Indonesia
Mahakam Ulu Regency
Mahakam Ulu Regency
Mahakam Ulu Regency (Indonesia)
Coordinates: 0°30′N 115°17′E / 0.5°N 115.28°E / 0.5; 115.28
CountryIndonesia
ProvinceEast Kalimantan
CapitalUjoh Bilang
Established14 December 2012
Government
 • RegentAngela Idang Belawan
 • Vice RegentSuhuk
Area
 • Total
5,913.1 sq mi (15,314.8 km2)
Population
 (mid 2025 estimate)
 • Total
39,962
 • Density6.7582/sq mi (2.6094/km2)
 [1]
Time zoneUTC+8 (ICST)
Area code(+62) 545
HDI (2022)Increase 0.687 (Medium)[2]
Websitemahakamulukab.go.id

Mahakam Ulu Regency (Indonesian pronunciation: [maˈhakam ˈulu], lit. 'Upper Mahakam') is a regency (kabupaten) in the province of East Kalimantan, Indonesia. As the name implies, it comprises the upper valley of the Mahakam River. It covers a land area of 15,314.8 km2. The regency was established on 14 December 2012, formed from the former northern districts of West Kutai Regency.[3] The districts now forming the regency held a combined population of 24,994 at the 2010 Census;[4] the population for the new regency at the 2020 Census was 32,513;[5] the official estimate as at mid 2025 was 39,962 (comprising 21,328 males and 18,634 females).[1] The administrative capital is at Ujoh Bilang, which had 5,474 inhabitants as at mid 2024.[6]

Mahakam Ulu shares borders with Kapuas Hulu (West Kalimantan) to the west; Murung Raya, North Barito (Central Kalimantan), and West Kutai to the south, Kutai Kartanegara to the east, and Malinau to the north. It is also the only regency in East Kalimantan to share an international land border with the Malaysian state of Sarawak (Kapit), to the north. Mahakam Ulu is also notorious for being geographically isolated from the rest of East Kalimantan. As a result, the public services and transportation access are still minimal.[7]

Administrative districts

Map of districts in Mahakam Ulu

The regency is divided into five districts (kecamatan), tabulated below with their areas and their populations at the 2010 Census[4] and 2020 Census,[5] together with the official estimates as at mid 2025.[1]

Notable settlements include the twin villages of Tiong Ohang and Tiong Bu'u in Long Apari District.[8] The table also includes the locations of the district administrative centres, the number of administrative villages (all classed as kampung or desa) in each district, and its post code.

Kode
Wilayah		Name of
District
(kecamatan)		Area
in
km2		Pop'n
Census
2010		Pop'n
Census
2020		Pop'n
Estimate
mid 2025		Admin
centre		No.
of
villages		Post
code
64.11.03Laham901.82,2752,7493,289Laham575779
64.11.02Long Hubung530.96,4058,6049,412Long Hubung1175770
64.11.01Long Bagun4,971.27,88614,46217,017Ujoh Bilang1175767
64.11.05Long Pahangai3,420.24,3264,9785,406Long Pahangai1375768
64.11.04Long Apari5,490.74,1024,2174,748Long Ohang1075769
Totals15,314.824,99435,01039,962Ujoh Bilang50

References

  1. 1 2 3 Badan Pusat Statistik, Jakarta, 27 February 2026, Kabupaten Mahakam Ulu Dalam Angka 2026 (Katalog-BPS 1102001.6411)
  2. ↑ "Indeks Pembangunan Manusia 2021-2022". Badan Pusat Statistik Indonesia (in Indonesian). Retrieved 2022-12-01.
  3. ↑ DPR Sahkan 7 Kabupaten Baru. www.kompas.com. Sabtu, 15 December 2012. Accessed 30 December 2012
  4. 1 2 Biro Pusat Statistik, Jakarta, 2011.
  5. 1 2 Badan Pusat Statistik, Jakarta, 2021.
  6. ↑ Badan Pusat Statistik, Kecamatan Long Bagun 26 September 2025, Katalog-BPS 1102001.6411030.
  7. ↑ "Sulitnya Menembus Daerah Perbatasan Mahakam Ulu, Biar Mudah maka Bandara Ujoh Bilang Segera Dibangun". nusantarainfo.com. Retrieved 2025-01-24.
  8. ↑ "Jembatan Gantung Tiong Ohang-Tiong Bu'u, Urat Nadi Kehidupan Antar Kampung di Mahulu". Tribun Kaltim (in Indonesian). Retrieved 2020-09-09.


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