Cambodia
Land area : 181,035 sq km
Population : 14,100,000 (mid-2006)
Yunnan Province, China
Land area : 394,000 sq km
Population : 44,152,000 (2004)
Guangxi Zhuang Autonomous Region, China
Land area : 236,700 sq km
Population : 48,890,000 (2004)
Lao PDR
Land area : 237,000 sq km
Population : 6,100,000 (mid-2006)
Myanmar
Land area : 677,000 sq km
Population : 51,000,000 (mid-2006)
Thailand
Land area : 513,000 sq km
Population : 65,200,000 (mid-2006)
Vietnam
Land area : 331,691 sq km
Population : 84,200,000 (mid-2006)
Sources: U.N. Human Development Report 2006, United Nations Economic and Social Commission for Asia and the Pacific, Population Reference Bureau, Asian Development Bank Key Indicators Report, Yunnan Government.