| Flag | Country | Capital | Largest city | Area(km2) | Population(2024) | Density(/km2) | GDP per cap.(PPP) | HDI | Currency | Official languages | Leaders | Accession |
| | ChinaPeople's Republic of China | Beijing | Shanghai (metropolitan area)Chongqing (city proper) | 9,640,011 | a1,374,820,000 | 139.6 | 26,310 | 0.788 | Renminbi (Chinese yuan, ¥)(CNY) | Standard Chinese written in simplified characterssee also languages of China | Paramount Leader and Head of State: Xi Jinping Head of Government: Li Qiang | 1996-04-26 |
| | KazakhstanRepublic of Kazakhstan | Astana | Almaty | 2,724,900 | d17,670,900 | 5.94 | 41,366 | 0.802 | Kazakhstani tenge (₸) (KZT) | Kazakh (National)Russian | Head of State: Kassym Jomart Tokayev Head of Government: Ojlas Bektenov | 1996-04-26 |
| | KyrgyzstanKyrgyz Republic | Bishkek | 199,900 | f6,008,600 | 27.4 | 7,773 | 0.701 | Kyrgyzstani som (som)(KGS) | Kyrgyz (National)Russian | Head of State and Government: Sadyr Japarov | 1996-04-26 |
| | RussiaRussian Federation | Moscow | 17,075,400 | b146,519,759 | 8.3 | 47,299 | 0.821 | Russian rouble (₽) (RUB) | Russian also see Languages of Russia | Head of State: Vladimir Putin Head of Government: Mikhail Mishustin | 1996-04-26 |
| | TajikistanRepublic of Tajikistan | Dushanbe | 143,100 | e8,352,000 | 48.6 | 5,533 | 0.679 | Tajikistani somoni (SM)(TJS) | Tajik Persian | Head of State: Emomali Rahmon Prime Minister: Kokhir Rasulzoda | 1996-04-26 |
| | UzbekistanRepublic of Uzbekistan | Tashkent | 447,400 | c31,022,500 | 61.4 | 11,596 | 0.727 | Uzbekistani soum (soum)(UZS) | Uzbek | Head of State: Shavkat Mirziyoyev Head of Government: Abdulla Aripov | 2001-06-15 |
| | IndiaRepublic of India | New Delhi | Mumbai | 3,287,263 | 1,450,936,000 | 488 | 11,158 | 0.685 | Indian rupee (₹) (INR) | Hindi (Devanagari script)&, English . Also see Languages of India | Head of State: Droupadi Murmu Head of Government: Narendra Modi | 2017-06-09 |
| | PakistanIslamic Republic of Pakistan | Islamabad | Karachi | 881,913 | b 241,499,431 | 273.8 | $6,715 | 0.540 | Pakistani rupee (Rs)(PKR) | Urdu (National)English | Head of State: Asif Ali Zardari Head of Government: Shehbaz Sharif | 2017-06-09 |
| | IranIslamic Republic of Iran | Tehran | 1,648,195 | c79,011,700 | 48.0 | 19,607 | 0.780 | Iranian rial (Rl) (IRR) | Persian | Supreme Leader and Head of State:Ali Khamenei Head of Government: Masoud Pezeshkian | 2023-07-04 |
| | BelarusRepublic of Belarus | Minsk | | 207,595 | c9,498,700 | 45.8 | 32,098 | 0.801 | Belarusian rubel (Rbl) (BYR) | BelarusianRussian | Head of State and Government: Alexander Lukashenko Prime Minister: Roman Golovchenko | 2024-07-04 |