2020 Population Census: South Kalimantan Population Totals 4.07 Million

The 2020 Population Census recorded South Kalimantan's population at 4.074 million. This comprises 2.06 million males and 2.01 million females.

The sex ratio in South Kalimantan last year was 102.54. This means there are approximately 102 males for every 100 females.

Population density in South Kalimantan reached 105 people per square kilometer (km²). The average population growth rate in South Kalimantan was 1.13% over the last decade.

By region, Banjarmasin City has the largest population in South Kalimantan, at 657,660. Balangan Regency has the smallest population, at 130,360.

The region with the highest sex ratio in South Kalimantan is Kotabaru Regency, at 107.01. The lowest is Hulu Sungai Utara Regency, at 99.71.

By generation, the majority of South Kalimantan's population (28.32%) is Generation Z (born 1997-2012). 26.59% are Millennials (born 1981-1996).

South Kalimantan's Generation X population (born 1965-1980) accounts for 22.55%. Post-Gen Z (born 2013 and later) makes up 11.29% of the population.

Baby Boomers (born 1946-1964) constitute 10% of the population, while Pre-Boomers (born before 1945) account for 1.25%.