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.
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👉 Regions of Indonesia in the context of Medan
Medan (/mɛˈdɑːn/ meh-DAHN, Indonesian: [ˈmɛdan] , Batak: ᯔᯩᯑᯉ᯳) is the capital and largest city of the Indonesian province of North Sumatra. The nearby Strait of Malacca, Port of Belawan, and Kualanamu International Airport make Medan a regional hub and multicultural metropolis, acting as a financial centre for Sumatra and a gateway to the western part of Indonesia. About 60% of the economy in North Sumatra is backed by trading, agriculture, and processing industries, including exports from its 4 million acres of palm oil plantations. The National Development Planning Agency listed Medan as one of the four main central cities in Indonesia, alongside Jakarta, Surabaya, and Makassar. In terms of population, it is the most populous city in Indonesia outside of the island of Java. Its population as of 2024 is approximately equal to the country of Moldova.
As of the 2020 Census, Medan had a population of 2,435,252 within its city limits; the official population estimate as of mid 2024 was 2,486,283 - comprising 1,237,602 males and 1,248,681 females - and projected to rise to 2,498,293 at mid 2025. When the surrounding urban area is included, the population is over 3.4 million, making it the fourth largest urban area in Indonesia. The Medan metropolitan area—which includes neighbouring Binjai, Deli Serdang Regency, and a part of Karo Regency—is the largest metropolitan area outside of Java, with 4,744,323 residents counted in the 2020 Census, rising to 4,944,979 in mid 2024.
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Regions of Indonesia in the context of Surabaya
Surabaya is the capital city of East Java province and the second-largest city in Indonesia, after Jakarta. Located on the northeastern corner of Java island, on the Madura Strait, it is one of the earliest port cities in Southeast Asia. According to the National Development Planning Agency, Surabaya is one of the four main central cities of Indonesia, alongside Jakarta, Medan, and Makassar. The city covers a land area of 335.93 km, and had a population of 2,874,314 within its city limits at the 2020 census. With 3,018,022 people living in the city as of mid 2024 (comprising 1,494,734 males and 1,523,288 females) and over 10 million in the extended Surabaya metropolitan area, according to the latest official estimate, Surabaya is the second-largest metropolitan area in Indonesia. Surabaya metropolitan is also ASEAN's 6th largest economy ahead of Hanoi. In 2023, the city's GRP PPP was estimated at US$150.294 billion.
The city was settled in the 10th century by the Kingdom of Janggala, one of the two Javanese kingdoms that was formed in 1045 when Airlangga abdicated his throne in favor of his two sons. In the late 15th and 16th centuries, Surabaya grew to be a duchy, a major political and military power as well as a port in eastern Java, probably under the Majapahit empire. At that time, Surabaya was already a major trading port, owing to its location on the River Brantas delta and the trade route between Malacca and the Spice Islands via the Java Sea. During the decline of Majapahit, the lord of Surabaya resisted the rise of the Demak Sultanate and only submitted to its rule in 1530. Surabaya became independent after the death of Sultan Trenggana of Demak in 1546.
Regions of Indonesia in the context of Eastern Indonesia
Eastern Indonesia (or East Indonesia; Indonesian: Indonesia Timur, pronounced [ɪndoˌnes(i)ja ˈt̪imʊr]) is one of the two main geographical regions of Indonesia, the other being Western Indonesia. It comprises four geographical units: Lesser Sunda Islands, Sulawesi, Maluku Islands and Papua. Central Indonesian Time and Eastern Indonesia Time are the national standard time designated for Eastern Indonesia; it falls within the UTC+8 and UTC+9 time zone, respectively.
Eastern Indonesia borders the Southern Philippines and Palau in the North, Papua New Guinea in the East, and Northern Australia in the South.
Regions of Indonesia in the context of Western Indonesia
Western Indonesia (Indonesian: Indonesia Barat; pronounced [ɪndoˌnes(i)ja ˈbarat̪̚]) is one of the two main geographical regions of Indonesia, the other being Eastern Indonesia. It consists of 21 provinces in Java, Kalimantan, and Sumatra. Western Indonesia Time (Indonesian: Waktu Indonesia Barat, WIB; pronounced [ˌwak̚t̪u ɪndoˌnes(i)ja ˈbarat̪̚]) is seven hours ahead (UTC+07:00) of the Coordinated Universal Time (UTC), used in the islands of Sumatra, Java, and the western half of Kalimantan.
Western Indonesia has a land border with East Malaysia to the North and Peninsular Malaysia to the West.