Regions of Indonesia

This is a list of some of the regions of Indonesia. Many regions are defined in law or regulations by the central government. At different times of Indonesia's history, the nation has been designated as having regions that do not necessarily correlate to the current administrative or physical geography of the territory of the nation.

Geographical units

According to ISO 3166-2:ID, Indonesia is divided into seven geographical units, with each unit consisting of major islands or an island group. These geographical units are as follows:

CodeGeographical unitProvincesPopulation(mid-2025)Badan Pusat Statistik, Jakarta, 2026.Projected(mid-2026)Badan Pusat Statistik, Jakarta, 2026.Largest cityHighest pointSumatraAceh, the Bangka Belitung Islands, Bengkulu, Jambi, Lampung, North Sumatra, Riau, the Riau Islands, South Sumatra, and West Sumatra 62,259,500 62,987,200MedanMount Kerinci3,805 m (12484 ft)JavaBanten, Central Java, East Java, the Special Capital Region of Jakarta, the Special Region of Yogyakarta, and West Java 158,079,100 159,194,600JakartaMount Semeru3,678 m (12067 ft)KalimantanCentral Kalimantan, East Kalimantan, North Kalimantan, South Kalimantan, and West Kalimantan 17,951,300 18,323,800SamarindaMount Bukit Raya2,278 m (7,474 ft)Nusa Tenggara (Lesser Sunda Islands)Bali, West Nusa Tenggara, and East Nusa Tenggara 15,935,000 16,132,100DenpasarMount Rinjani3,726 m (12,224 ft)SulawesiCentral Sulawesi, Gorontalo, North Sulawesi, South Sulawesi, Southeast Sulawesi, and West Sulawesi 21,044,800 21,275,400MakassarLatimojong3,478 m (11,411 ft)Maluku IslandsMaluku and North Maluku 3,344,200 3,386,900AmbonMount Binaiya3,027 m (9,931 ft)Papua (Western New Guinea)Central Papua, Highland Papua, Papua, South Papua, Southwest Papua, and West Papua 5,824,500 5,898,400JayapuraPuncak Jaya4,884 m (16,024 ft)

Eastern Indonesia and Western Indonesia

During the last stages of the Dutch colonial era, the area east of Java and Kalimantan was known as the Great East and later known as Eastern Indonesia. On 24 December 1946, the State of East Indonesia was formed covering the same area (excluding Western New Guinea). It was a component of the United States of Indonesia, and was dissolved into the unitary Republic of Indonesia on 17 August 1950. Currently, Eastern Indonesia consists of 17 provinces: Bali, East Nusa Tenggara, West Nusa Tenggara, Central Sulawesi, Gorontalo, North Sulawesi, South Sulawesi, Southeast Sulawesi, West Sulawesi, Maluku, North Maluku, Central Papua, Highland Papua, Papua, South Papua, Southwest Papua, and West Papua. Meanwhile, the region comprising the other 21 provinces in Sumatra, Java, and Kalimantan is known as Western Indonesia.

Development regions According to the National Development Planning Agency, Indonesia is divided into four main development regions: each is led by the major cities of Medan, Jakarta, Surabaya, and Makassar.

Main development regionCentral cityDevelopment regionProvince(s) Main Development Region A MedanDevelopment Region IAceh and North SumatraDevelopment Region IIRiau, the Riau Islands, and West Sumatra Main Development Region B JakartaDevelopment Region IIIThe Bangka Belitung Islands, Bengkulu, Jambi, and South SumatraDevelopment Region IVLampung, Banten, Central Java, the Special Capital Region of Jakarta, the Special Region of Yogyakarta, and West JavaDevelopment Region VWest Kalimantan Main Development Region C SurabayaDevelopment Region VIEast Java and BaliDevelopment Region VIICentral Kalimantan, East Kalimantan, North Kalimantan, and South Kalimantan Main Development Region D MakassarEast Nusa Tenggara, West Nusa Tenggara, South Sulawesi, Southeast Sulawesi, and West SulawesiDevelopment Region IXCentral Sulawesi, Gorontalo, and North SulawesiDevelopment Region XMaluku, North Maluku, Central Papua, Highland Papua, Papua, South Papua, Southwest Papua, and West Papua

Regions of Indonesia

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