Deli Serdang (Jawi: دلي سردڠ) is a regency in the Indonesian province of North Sumatra. It surrounds the city of Medan, and also borders to the west the city of Binjai, which is effectively a bedroom community for Medan. The entire regency lies within the Medan metropolitan area. It occupies an area of 2,502.16 km2 (966.09 sq miles). The capital of the district is Lubuk Pakam, which is located approximately 30 km east of Medan. The national census of 2000 recorded 1,573,987 people, but by 2010 the regency's population increased by 13.76% to 1,790,431, and at the 2020 Census the total was 1,931,441. The official estimate as at mid 2023 was 2,015,429. Kualanamu International Airport is located in this regency, 23 kilometres (14 mi) east of downtown Medan. It is the most populous regency in Indonesia outside the island of Java. Its population is comparable to the country of Latvia.

Neighbouring areas

The external boundaries of the regency are with: The major city of Medan is a semi-enclave within the regency (except in the north, where the city reaches the Malacca Strait at Belawan).

Administrative districts

The regency is divided into twenty-two districts (kecamatan), tabulated below with their areas (in km2) and their 2010 Census and 2020 Census populations, and the official estimates as of mid 2023. The table also includes the locations of the district administrative centres, the number of administrative villages within each district (totaling 380 rural desa, and 14 urban kelurahan), and its post code: Notes: (a) Deli Tua, Deli Tua Barat and Deli Tua Timur. (b) Kenangan and Kenangan Baru. (c) Galang Kota. (d) Pekan Tanjung Morawa. (e) Cemara, Lubuk Pakam I, II Lubuk Pakam Pekan, Lubuk Pakam III, Paluh Kemiri, Petapahan and Syahmad.

London Sumatra (LONSUM) protests

Deli Serdang Regency contains three plantations owned by London Sumatra (LONSUM). On 21 June 2003, farmers and indigenous peoples in a number of villages within the district attempted to re-occupy lands which had been leased to LONSUM by the government. Police fired upon the group, resulting in at least a dozen wounded and four deaths.

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