When created in 2004, the Indonesian province of West Sulawesi (Provinsie Sulawesi Barat) was divided into five regencies (kabupaten), including the recently created regencies of Mamasa, which had been cut out of Polewali Mamasa Regency on 10 April 2002, and North Mamaju (Mamuju Utara), which had been cut out of Mamuju Regency on 25 February 2003. A sixth regency - Central Mamuju (Mamuju Tengah) - was cut out of the existing Mamuju Regency on 14 December 2012. North Mamuju Regency was renamed as Pasangkayu Regency in March 2018. These regencies are listed below with their areas and their populations at the 2010Biro Pusat Statistik, Jakarta, 2011. and 2020Badan Pusat Statistik, Jakarta, 2021. censuses, together with the official estimates as at mid 2025.Badan Pusat Statistik, Jakarta, 27 February 2026, Provinsi Sulawesi Barat Dalam Angka 2026 (Katalog-BPS 1102001.76) The table also includes the locations of the regency administrative capitals and the Human Development Index for each regency as at 2014.
KodeWilayah Name ofRegency Area inkm2 Pop'nCensus2010 Pop'nCensus2020' Pop'nEstimatemid 2025 Capital HDI2014 estimate 76.05 Majene Regency900.53151,107174,407186,337 Majene 0.637 () 76.04 Polewali Mandar Regency2,074.19396,120478,534507,212 Polewali 0.600 () 76.03 Mamasa Regency3,016.13140,082163,383175,508 Mamasa 0.628 () 76.02 Mamuju Regency4,942.04231,324278,764301,879 Karema, Mamuju 0.647 () 76.01 Pasangkayu Regency2,901.70134,369188,861206,581 Pasangkayu 0.640 () 76.06 Central Mamuju Regency (Mamuju Tengah)2,756.08105,649135,280147,788 Tobadak 0.614 () Total Province16,590.671,158,6511,419,2291,525,335 Mamuju 0.622 ()
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