West Kutai Regency
West Kutai Regency is a regency 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 20,384.6 km2, and it had a population of 140,097 at the 2010 Census, and 165,938 at the 2020 Census; the official estimate as at mid 2024 was 186,581. 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, tabulated below with their areas and their 2010 and 2020 Census populations, 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 |
| 64.07.05 | Long Iram | 2,499.5 | 6,407 | 7,184 | 7,788 | Long Iram Kota | 11 | 75766 |
| 64.07.06 | Melak | 179.2 | 10,596 | 15,041 | 16,555 | Melak Ilir | 6 | 75765 |
| 64.07.07 | Barong Tongkok | 405.9 | 23,935 | 31,746 | 37,246 | Barong Tongkok | 21 | 75776 |
| 64.07.08 | Damai | 2,027.5 | 8,476 | 10,549 | 11,850 | Damai Kota | 17 | 75777 |
| 64.07.09 | Muara Lawa | 436.7 | 6,483 | 7,033 | 8,126 | Muara Lawa | 8 | 75775 |
| 64.07.10 | Muara Pahu | 1,110.6 | 8,272 | 8,344 | 9,153 | Tanjung Laor | 12 | 75774 |
| 64.07.11 | Jempang | 744.5 | 11,279 | 11,211 | 12,671 | Tanjung Isuy | 12 | 75773 |
| 64.07.12 | Bongan | 2,305.3 | 8,997 | 10,499 | 12,442 | Muara Kendang | 16 | 75772 |
| 64.07.13 | Penyinggahan | 192.1 | 3,904 | 3,815 | 4,093 | Penyinggahan Ilir | 6 | 75763 |
| 64.07.14 | Bentian Besar | 1,856.1 | 3,093 | 3,213 | 3,700 | Dilang Puti | 9 | 75778 |
| 64.07.15 | Linggang Bigung | 2,299.1 | 13,712 | 15,843 | 17,006 | Linggang Bigung | 11 | 75576 |
| 64.07.16 | Nyuatan | 1,343.3 | 5,348 | 6,357 | 7,092 | Dempar | 10 | 75776 & 75777 |
| 64.07.17 | Siluq Ngurai | 1,629.1 | 4,292 | 5,880 | 6,708 | Muhur | 16 | 75771 |
| 64.07.18 | Mook Manaar Bulatn | 2,964.6 | 7,478 | 8,409 | 9,307 | Gunung Rampah | 16 | 75765 |
| 64.07.19 | Tering | 341.8 | 9,431 | 10,513 | 11,367 | Tering Lama | 15 | 75760 |
| 64.07.20 | Sekolaq Darat | 49.3 | 8,394 | 10,301 | 11,477 | Sekolaq Darat | 8 | 75764 |
| Totals | 20,384.6 | 140,097 | 165,918 | 186,581 | Sendawar | 194 |
Notes: includes 2 kelurahan - Barong Tongkok and Simpang Raya. includes 2 kelurahan - Melak Ilir and Melak Ulu.
except the four villages of Abit, Muara Jawaq, Rembayan and Tondah. includes the riverine island of Pulau Kualan.