Banjarmasin

Banjarmasin is the largest city in South Kalimantan, Indonesia, and serves as the third most populous urban center on the island of Borneo. Located within the Barito River's basin, the city area covers 98.37 square kilometres and is bisected by the Martapura River.

The geography of Banjarmasin is defined by its low-lying, flat terrain with a slope of 0.13%, resting upon a geological foundation dominated by clay, sandstone, and alluvial river sediments. Positioned within a swampy region, the city sits generally below water level and features a dendritic drainage pattern formed by smaller connected waterways influenced heavily by tidal action, making the locality prone to tidal flooding.

Administratively, the city is divided into five districts: Central Banjarmasin, South Banjarmasin, North Banjarmasin, East Banjarmasin, and West Banjarmasin. These districts exhibit distinct demographic distributions and densities across the municipal area. Central Banjarmasin is the most densely populated district, with a density of 13,155 residents per square kilometre, while South Banjarmasin records the lowest density at 4,281 residents per square kilometre. Furthermore, nearly half of the municipal population—specifically 47.87%—resides within the South Banjarmasin and North Banjarmasin districts combined.

Geographic Setting and Tourism

Banjarmasin is situated on a delta island near the confluence of the Barito and Martapura rivers in South Kalimantan, Indonesia. The municipality covers an area of 98.37 square kilometers and coordinates at 3.31987 latitude and 114.59075 longitude.

As the largest city in South Kalimantan, the urban center forms part of the broader Banjarbakula agglomeration. The location maintains a local time corresponding to Asia/Makassar and operates using the Indonesian Rupiah currency, while its population reached 657,663 inhabitants during the 2020 Census.

Geographical features define the surrounding delta landscape, which connects directly to major waterways on the island of Borneo. Official statistical records from 2020 indicate that the municipality contained 113 identified potential tourist destinations alongside 129 registered hotels. Visitor counts for that year totaled 109,653 domestic tourists and 251 foreign tourists, reflecting the current scale of the local visitor economy within the provincial territory.

Banjarmasin is the largest city in South Kalimantan, Indonesia, situated on a delta island near the confluence of the Barito and Martapura rivers. The municipality covers a land area of 98.37 square kilometres (37.98 square miles).

Geographically, Banjarmasin lies within the Barito River's basin and is bisected by the Martapura River, displaying a very flat and low-lying terrain with a slope of 0.13%. The foundation of the land is characterized predominantly by clay, sandstone, and alluvial river sediments. A dendritic drainage pattern is formed by several smaller waterways that connect directly to the Barito or Martapura rivers. Because the municipality is situated in a swampy region generally below water level, the local river system is influenced by tides, making the area prone to flooding from tidal bores.

The city proper shares land boundaries with the Barito Kuala Regency to the north and west, as well as the Banjar Regency to the south and east. Administratively, the municipal territory is divided into five districts known as kecamatan: Central Banjarmasin, South Banjarmasin, North Banjarmasin, East Banjarmasin, and West Banjarmasin. Among these divisions, Central Banjarmasin has a density of 13,155 residents per square kilometre, whereas South Banjarmasin records a density of 4,281 residents per square kilometre.

Demographically, Banjarmasin recorded a population of 625,481 during the 2010 Census, which increased to 657,663 inhabitants by the 2020 Census. Official estimates for mid-2025 placed the total population at 682,360 residents, consisting of 341,375 males and 340,985 females. The municipality stands as the third most populous urban settlement on the island of Borneo. Furthermore, the wider urban agglomeration—frequently designated as Banjarbakula, Banjar Raya, or Greater Banjarmasin—spans an area of 6,737.70 square kilometres (2,601.44 square miles) and encompasses Banjarbaru city alongside specific sectors of Banjar Regency, Barito Kuala Regency, and Tanah Laut Regency. This broader urban zone accounted for 2,076,771 inhabitants by mid-2024, representing nearly half of the total population of the South Kalimantan province.