Following the separation (on 18 December 2003) of this regency's then northern districts to create a separate
North Kolaka Regency (
Kabupaten Kolaka Utara), the Kolaka Regency was until 2013 divided into twenty
districts (
kecamatan). On 14 December 2012, the Indonesian Parliament approved the establishment of a new
East Kolaka Regency (
Kabupaten Kolaka Timur), and on 11 January 2013, under Law No. 8 of 2013, the nine eastern
kecamatan were removed to form the new East Kolaka Regency, leaving the eleven western
kecamatan in Kolaka Regency. A twelfth district (Iwoimendaa) has subsequently been added by splitting off the western villages of Wolo District. The twelve districts are tabulated below with their areas and their populations at the 2010 Census and the 2020 Census, together with the official estimates as at mid 2023. The table also includes the location of the district headquarters, the number of
administrative villages or subdisctricts in each district (totaling 100 rural
desa and 35 urban
kelurahan), and their post codes. Notes: (a) including a group of 10 islands off the west coast of Kolaka, of which the largest are
Pulau Padamarang,
Pulau Maniama and
Pulau Buaya. (b) including the 2 offshore islands of
Pulau Laburoko and
Pulau Pisang. (c) the 2010 population of the new Iwoimendaa District is included in the 2010 figure for Wolo District, from which it was subsequently cut out. ==Climate==