
Country: Indonesia With 682,360 people estimated in mid-2025, Banjarmasin is the third most populous city on Borneo. The largest city in South Kalimantan, it spreads across a delta island near the meeting point of the Barito and Martapura rivers. Once the provincial capital and the seat of the Sultanate of Banjar, it remains a major centre of Banjarese culture and one of Kalimantan’s leading cities.
