Banyuasin Regency

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Banyuasin Regency (Musi: Ayomasen) is a regency of South Sumatra Province in Indonesia. The Regency was formed on 10 April 2002 from the coastal and eastern areas formerly part of the Musi Banyuasin Regency. It takes its name from the main river which drains that area, the Banyuasin River. Pangkalan Balai is the regency seat. The regency borders Musi Banyuasin Regency, Jambi province and Bangka Strait to the north, Bangka Strait to the east, Ogan Komering Ilir Regency, Muara Enim Regency, and the city of Palembang (which it almost surrounds on most sides) to the south, and Musi Banyuasin Regency to the west. It has a land area of 12,258.59 km2 and had a population of 749,107 at the 2010 census and 836,914 at the 2020 census; the official estimate as at mid 2025 was 910,632 (comprising 465,361 males and 445,271 females). Much of the regency is coastal lowland, but in the south it also includes many suburban areas within the Palembang metropolitan area.