West Kutai Regency () is a regency (kabupaten) in the Indonesian province of East Kalimantan. It previously covered a much greater area, with a population of 165,091 at the 2010 Census, but on 11 January 2013 the five northernmost districts were split off to form a new Mahakam Ulu Regency; the residual area of West Kutai Regency is 20,381.61 km2, and it had a population of 140,097 at the 2010 Census,Biro Pusat Statistik, Jakarta, 2011. and 165,938 at the 2020 Census;Badan Pusat Statistik, Jakarta, 2021. the official estimate as at mid 2025 was 188,163 (comprising 98,861 males and 89,302 females).Badan Pusat Statistik, Jakarta, 27 February 2026, Kabupaten Kutai Barat Dalam Angka 2026 (Katalog-BPS 1102001.6402) The town of Sendawar is the administrative capital. History The regency was split off from Kutai Regency officially on 4 October 1999, with Rama Alexander Asia becoming its first regent. Administrative districts Following the removal of the northern five districts in December 2012 to form the new Mahakam Ulu Regency, the residual West Kutai Regency is divided into sixteen districts (kecamatan), tabulated below with their areas and their 2010Biro Pusat Statistik, Jakarta, 2011. and 2020Badan Pusat Statistik, Jakarta, 2021. Census populations, together with the official estimates as at mid 2025.Badan Pusat Statistik, Jakarta, 27 February 2026, Kabupaten Kutai Barat Dalam Angka 2026 (Katalog-BPS 1102001.6402) The table also includes the locations of the district administrative centres, the number of administrative villages (totaling 190 rural kampung or desa, and 4 urban kelurahan) in each district, and its postal codes.
Kode Wilayah Name ofDistrict (kecamatan) Area in km2 Pop'nCensus2010 Pop'nCensus2020 Pop'nEstimatemid 2025AdmincentreNo. of villagesPostcodes 64.07.12 Bongan 2,305.318,99710,49912,529Muara Kendang1675772 64.07.11 Jempang 744.4711,27911,21112,751Tanjung Isuy1275773 64.07.13 Penyinggahan 192.083,9043,8154,104Penyinggahan Ilir675763 64.07.10 Muara Pahu 1,110.648,2728,3449,195Tanjung Laor1275774 64.07.17 Siluq Ngurai 1,629.104,2925,8806,791Muhur1675771 64.07.09 Muara Lawa 436.566,4837,0338,196Muara Lawa875775 64.07.14 Bentian Besar 1,287.863,0933,2133,708Dilang Puti975778 64.07.08 Damai 2,025.538,47610,54911,938Damai Kota1775777 64.07.16 Nyuatan 1,312.625,3486,3577,127Dempar1075776& 75777 64.07.07 Barong Tongkok 430.5823,93531,74637,801Barong Tongkok21 (a) 75776 64.07.15 Linggang Bigung 5,718.0713,71215,84317,079Linggang Bigung1175576 64.07.06 Melak 179.1110,59615,04116,696Melak Ilir6 (b) 75765 64.07.20 Sekolaq Darat 48.948,39410,30111,606Sekolaq Darat875764 64.07.18 Mook ManaarBulatn 960.577,4788,4099,343Gunung Rampah1675765 (c) 64.07.05 Long Iram (d) 1,657.956,4077,1847,869Long Iram Kota1175766 64.07.19 Tering 342.229,43110,51311,430Tering Lama1575760 Totals 20,381.61140,097165,918188,163Sendawar194
Notes: (a) includes 2 kelurahan - Barong Tongkok and Simpang Raya. (b) includes 2 kelurahan - Melak Ilir and Melak Ulu. (c) except the four villages of Abit, Muara Jawaq, Rembayan and Tondah (which share a postcode of 75774). (d) includes the riverine island of Pulau Kualan.
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