Nunukan Regency

Nunukan Regency is a regency of North Kalimantan Province in Indonesia. Nunukan Regency shares international borders with the Malaysian states of Sabah to the north and Sarawak to the west, and inter-regency borders with Tana Tidung Regency and Malinau Regency to the south. The regency covers an area of 14,247.50 km2 and it had a population of 140,841 at the 2010 Census; the latest official estimate (as at mid 2019) is 209,922.
Nunukan is also the name of an island within this regency. It has an area of 226 km2. Nunukan town, the capital of the regency, is located on Nunukan Island, which comprises the insular section of Nunukan District (which also includes part of the 'mainland' of Kalimantan) and the whole of the separate Nunukan Selatan District. It is a major port for ferry crossings to Tawau in Sabah state, Malaysia.
Administrative Districts.
At the 2010 Census, the regency was divided into nine districts ("kecamatan"), but subsequently another ten new districts have been created by the division of existing regencies. Sixteen of these are tabulated below with their areas and their 2010 Census populations, together with the most recent official estimates (for mid 2019) The table also includes the number of administrative villages (rural "desa" and urban "kelurahan") in each district, and its postal codes.
Notes: (a) the area and population figures given for Krayan District include the areas and populations of the three most recently-created districts mentioned below, but the number of villages and the post code reflects the reduced district only. The Apokayan region (i.e. Krayan itself, Krayan Selatan, and the three newly-created districts) comprises the entire western section of the Regency, separated from Malaysia by the meandering Kayan River. <br>(b) the 2010 population of Lumbis Ogong District is included in the figure for Lumbis District, from which it was split. (c) the 2010 and 2019 populations of Sembakung Atulai District are included in the figures for Sembakung District, from which it was split. (d) the 2010 populations of Tulin Onsoi District and Sei Menggaris District are included in the figure for Sebuku District, from which they were split. <br>(e) Nunukan District comprises the western half of Nunukan Island (including the town of Nunukan), together with adjacent areas on the 'mainland' of Kalimantan. (f) Nunukan Selatan District comprises the eastern half of Nunukan Island. (g) Sebatik District comprises a southeast portion of Sebatik Island, while Sebatik Barat District comprises a southwest portion (the northern half of this island is part of Malaysian North Borneo, as the international boundary divides this island in two). (h) Since 2010, three additional districts have been created on (the Indonesian portion of) Sebatik Island - Sebatik Timur, Sebatik Tengah and Sebatik Utara - by the division of existing districts. The popululations in these districts in 2010 are included with the figures for Sebatik Barat District and Sebatik District.
The three most recently-added districts have been split away from Krayan District and are not shown separately in the table above because separate area and population figures are not available for them; these three districts are (1) Krayan Barat (West Krayan) with 25 villages and a post code of 77455; (2) Krayan Tengah (Central Krayan) with 11 villages and a post code of 77458; (3) Krayan Timur (East Krayan) with 17 villages and a post code of 77459.
Climate.
Nunukan town, the seat of the regency has a tropical rainforest climate (Af) with moderate rainfall in January and February and heavy rainfall in the remaining months.