Vietnam, officially the Socialist Republic of Vietnam, is a country in Southeast Asia and the easternmost country on the Indochinese Peninsula. With an estimated 96.2 million inhabitants as of 2019, it is the 15th most populous country in the world. Vietnam shares its land borders with China to the north, and Laos and Cambodia to the west. It shares its maritime borders with Thailand through the Gulf of Thailand, and the Philippines, Indonesia and Malaysia through the South China Sea. Its capital city is Hanoi, and its most populous city is Ho Chi Minh City, also known by its former name of Saigon.