In 2026, the estimated population of all ASEAN states amounted to an estimated 700million inhabitants, with Indonesia having the largest population at 287.2 million.
ASEAN opportunity
The Association of Southeast Asian Nations was founded by five states (Thailand, Indonesia, the Philippines, Malaysia, and Singapore) in 1967 to improve economic and political stability and social progress among the member states. It was originally modelled after the European Union. Nowadays, after accepting more members, their agenda also includes an improvement of cultural and environmental conditions. ASEAN is now an important player on the global stage with numerous alliances and business partners, as well as more contenders wanting to join.
The major player in the South
Indonesia is not only a founding member of ASEAN, it is also its biggest contributor in terms of gross domestic product and is also one of the member states with a positive trade balance. In addition, it has the highest number of inhabitants by far. About a third of all people in the ASEAN live in Indonesia – and it is also one of the most populous countries worldwide. Among the ASEAN members, it is certainly the most powerful one, not just in numbers, but mostly due to its stable and thriving economy.
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IMF. (April 14, 2026). Estimated population of ASEAN member states in 2026 (in millions) [Graph]. In Statista. Retrieved May 08, 2026, from https://www.statista.com/statistics/796222/total-population-of-the-asean-countries/
IMF. "Estimated population of ASEAN member states in 2026 (in millions)." Chart. April 14, 2026. Statista. Accessed May 08, 2026. https://www.statista.com/statistics/796222/total-population-of-the-asean-countries/
IMF. (2026). Estimated population of ASEAN member states in 2026 (in millions). Statista. Statista Inc.. Accessed: May 08, 2026. https://www.statista.com/statistics/796222/total-population-of-the-asean-countries/
IMF. "Estimated Population of Asean Member States in 2026 (in Millions)." Statista, Statista Inc., 14 Apr 2026, https://www.statista.com/statistics/796222/total-population-of-the-asean-countries/
IMF, Estimated population of ASEAN member states in 2026 (in millions) Statista, https://www.statista.com/statistics/796222/total-population-of-the-asean-countries/ (last visited May 08, 2026)
Estimated population of ASEAN member states in 2026 (in millions) [Graph], IMF, April 14, 2026. [Online]. Available: https://www.statista.com/statistics/796222/total-population-of-the-asean-countries/
