What Countries Make up Southeast Asia?

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The countries of maritime Southeast Asia are Indonesia, East Malaysia, East Timor, Philippines and Singapore. Cambodia, Laos, West Malaysia, Myanmar, Vietnam and Thailand are the countries of mainland Southeast Asia. Christmas Island and the Cocos Islands are territories of Southeast Asia, although they are both governed by Australia. Andaman and Nicobar Islands are administrative subdivisions of Southeast Asian countries.

The southeastern subregion of Asia is located south of China, east of India and north of Australia. Brunei and Singapore are the two smallest countries of Southeast Asia, with Brunei measuring 5,765 square kilometers and Singapore at 724 square kilometers. In 2012, the countries with the top three largest populations were Indonesia, the Philippines and Vietnam; Indonesia having approximately 244 million people, the Philippines having 96 million and Vietnam having 90 million.

The two geographically largest Southeast Asian countries are Myanmar and Indonesia. Myanmar measures 676,000 square kilometers, and Indonesia measures square 1,904,569 kilometers. The top 10 largest cities of Southeast Asia are Bandung, Bangkok, Cebu, Hanoi, Ho Chi Minh City, Jakarta, Kuala Lumpur, Manila, Medan and Quezon City.