Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia or SEA, is the geographical southeastern subregion of Asia, consisting of the regions that are south of China, south-east of the Indian subcontinent and north-west of Australia. Southeast Asia is bordered to the north by East Asia, to the west by South Asia and the Bay of Bengal, to the east by Oceania and the Pacific Ocean, and to the south by Australia and the Indian Ocean. Apart from the British Indian Ocean Territory and two out of 26 atolls of Maldives in South Asia, Southeast Asia is the only other subregion of Asia that lies partly within the Southern Hemisphere. The majority of the subregion is still in the Northern Hemisphere. East Timor and the southern portion of Indonesia are the only parts that are south of the Equator. (Source from Wikipedia)
(2020 info) Size – 719.2km2 Population – 5,757,499 Capital – Singapore
2. Brunei
Brunei is a country located on the north coast of the island of Borneo in Southeast Asia. Apart from its South China Sea coast, it is completely surrounded by the Malaysian state of Sarawak. It is separated into two parts by the Sarawak district of Limbang. Brunei is the only sovereign state entirely on Borneo; the remainder of the island is divided between Malaysia and Indonesia. As of 2020, its population was 460,345, of whom about 100,000 live in the capital and largest city, Bandar Seri Begawan. The government is an absolute monarchy ruled by its Sultan, entitled the Yang di-Pertuan, and implements a combination of English common law and sharia law, as well as general Islamic practices.
(2020 info) Size – 5,765km2 Population – 437,479 Capital – Bandar Seri Begawan
3. Myanmar
Myanmar is a country in Southeast Asia. It is the largest country in Mainland Southeast Asia, and has a population of about 54 million as of 2017. Myanmar is bordered by Bangladesh and India to its northwest, China to its northeast, Laos and Thailand to its east and southeast, and the Andaman Sea and the Bay of Bengal to its south and southwest. The country's capital city is Naypyidaw, and its largest city is Yangon (Rangoon).
(2020 info) Size – 676,578km2 Population – 53,708,320 Capital – Nay Pyi Taw
4. Cambodia
Cambodia is a country located in the southern portion of the Indochinese Peninsula in Southeast Asia. It is 181,035 square kilometres (69,898 square miles) in area, bordering Thailand to the northwest, Laos to the north, Vietnam to the east, and the Gulf of Thailand to the southwest. The nation's capital and largest city is Phnom Penh.
(2020 info) Size – 181,035km2 Population – 16,718,965 Capital – Phnom Penh
5. Timor-Leste
East Timor is an island country in Southeast Asia. It comprises the eastern half of the island of Timor, the nearby islands of Atauro and Jaco, and Oecusse, an exclave on the northwestern side of the island surrounded by Indonesian West Timor. Australia is the country's southern neighbour, separated by the Timor Sea. The country's size is 15,007 square kilometres (5,794 sq mi). Dili is its capital.
(2020 info) Size – 14,874km2 Population – 1,267,974 Capital – Dili
(2020 info) Size – 1,904,569km2 Population – 267,670,543 Capital – Jakarta
7. Laos
Laos is a socialist state and the only landlocked country in Southeast Asia. At the heart of the Indochinese Peninsula, Laos is bordered by Myanmar and the People's Republic of China to the northwest, Vietnam to the east, Cambodia to the southeast, and Thailand to the west and southwest. Its capital and largest city is Vientiane.
(2020 info) Size – 236,800km2 Population – 7,061,507 Capital – Vientiane
(2020 info) Size – 329,847km2 Population – 31,528,033 Capital – Kuala Lumpur
(2020 info) Size – 300,000km2 Population – 106,651,394 Capital – Manila
(2020 info) Size – 513,120km2 Population – 69,428,453 Capital – Bangkok
(2020 info) Size – 331,210km2 Population – 95,545,962 Capital – Hanoi