Get to know the 11 ASEAN member states

ASEAN. Flags of ASEAN member-states.

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(1st UPDATE) Here are some basic facts about the 11 countries belonging to the Association of Southeast Asian Nations

Editor’s Note: This story was originally published on May 4, 2026, and republished with updates on November 13, 2026.

MANILA, Philippines – All eyes are on the Philippines as it takes on the role of chair of the Association of Southeast Asian Nations (ASEAN) in 2026.

This places Manila at the forefront of coordinating priorities across Southeast Asia’s leading multilateral bloc, guiding discussions on regional cooperation, stability, and integration.

Established in 1967, ASEAN was formed to promote regional peace, political stability, and economic cooperation among Southeast Asian countries. The Philippines is one of the five founding members, along with Indonesia, Malaysia, Singapore, and Thailand.

Who are the members of ASEAN today? Here are some basic information about the 11 countries.

Philippines

• Year of ASEAN membership: 1967 
• Head of state and government: President Ferdinand Marcos Jr.
• Capital: Manila
• Land area: 299,764 square kilometers
• Population: 112.7 million (2024)
• GDP per capita: $3,984.8 (2024)
• Currency: Philippine peso 

Indonesia

• Year of ASEAN membership: 1967 
• Head of state and government: President Prabowo Subianto
• Capital: Jakarta (Nusantara is currently under transition)
• Land area: 1,811,569 square kilometers
• Population: 288.3 million (2025)
• GDP per capita: $4,925.4 (2024)
• Currency: Indonesian rupiah 

Singapore

• Year of ASEAN membership: 1967 
• Head of state: President Tharman Shanmugaratnam
• Head of government: Prime Minister Lawrence Wong
• Capital: Singapore
• Land area: 744.3 square kilometers
• Population: 6.11 million (2025)
• GDP per capita: $90,674.1 (2024)
• Currency: Singapore dollar

Thailand

• Year of ASEAN membership: 1967 
• Head of state: King Maha Vajiralongkorn
• Head of government: Prime Minister Anutin Charnvirakul 
• Capital: Bangkok
• Land area: 513,115 square kilometers
• Population: 65.95 million (2024)
• GDP per capita: $7,346.6 (2024)
• Currency: Thai baht 

Malaysia

• Year of ASEAN membership: 1967
• Head of state: King Ibrahim Iskandar
• Head of government: Prime Minister Anwar Ibrahim
• Capital: Kuala Lumpur
• Land area: 330,803 square kilometers
• Population: 34.2 million (2024)
• GDP per capita: $11,874.4 (2024)
• Currency: Malaysian ringgit

Brunei

• Year of ASEAN membership: 1984
• Head of state and government: Sultan Hassanal Bolkiah
• Capital: Bandar Seri Begawan
• Land area: 5,765 square kilometers
• Population: 458,600 (2025)
• GDP per capita: $33,153.5 (2024)
• Currency: Brunei dollar 

Vietnam

• Year of ASEAN membership: 1995
• Head of state: President To Lam
• Head of government: Prime Minister Le Minh Hung
• Capital: Hanoi
• Land area: 331,211.6 square kilometers
• Population: 102.3 million (2025)
• GDP per capita: $4,717.3 (2024)
• Currency: Vietnamese dong 

Myanmar

• Year of ASEAN membership: 1997
• Head of state and government: President Min Aung Hlaing (Myanmar’s military junta leaders have been barred from attending ASEAN summits since 2021. Only non-political representatives can participate.)
• Capital: Naypyidaw
• Land area: 677,000 square kilometers
• Population: 51.37 million (2024)
• GDP per capita: $1,359.1 (2024)
• Currency: Myanmar kyat 

Laos

• Year of ASEAN membership: 1997
• Head of state: President Thongloun Sisoulith
• Head of government: Prime Minister Saleumxay Kommasith
• Capital: Vientiane
• Land area: 236,800 square kilometers
• Population: 7.65 million (2024)
• GDP per capita: $2,124.0 (2024)
• Currency: Lao kip 

Cambodia

• Year of ASEAN membership: 1999
• Head of state: King Norodom Sihamoni
• Head of government: Prime Minister Hun Manet
• Capital: Phnom Penh
• Land area: 181,436 square kilometers
• Population: 17.28 million (2024)
• GDP per capita: $2,627.9 (2024)
• Currency: Cambodian riel

Timor-Leste

• Year of ASEAN membership: 2025 
• Head of state: President José Ramos-Horta
• Head of government: Prime Minister Xanana Gusmao
• Capital: Dili
• Land area: 15,007 square kilometers
• Population: 1.34 million (2022)
• GDP per capita: $1,332 (2024)
• Currency: United States dollar