Medan 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 2023 is approximately equal to the country of Moldova.

North Sumatra is a province of Indonesia located in the northern part of the island of Sumatra. Its capital and largest city is Medan. It is bordered by Aceh on the northwest and Riau and West Sumatra on the southeast, with two different coastlines located on the Indian Ocean and the Strait of Malacca, and a maritime border with Malaysia to the east. North Sumatra is Indonesia's fourth most populous province after West Java, East Java, and Central Java, and is also the most populous province outside of Java Island. North Sumatra is also the third-largest province in area on the island of Sumatra after South Sumatra and Riau provinces. It covers an area of 72,460.74 km2, which is approximately the same size as Sierra Leone or Scotland or Maine.