| Country | Capital | Population | Joining Year | | 1. Australia | Canberra | 18,751,000 | 1978 | | 2. The Bahamas | Nassau | 294,000 | 1978 | | 3. Bangladesh | Dhaka | 125,629,000 | 1978 | | 4. Barbados | Bridgetown | 266,000 | 1978 | | 5. Belize | Belmopan | 239,000 | 1990 | | 6. Botswana | Gaborone | 1,562,000 | 1978 | | 7. Brunei Darussalam | Bandar Seri Begawan | 315,000 | 1990 | | 8. Cameroon | Yaoundé | 14,303,000 | 1997 | | 9. Canada | Ottawa | 30,301,000 | 1978 | | 10. Cyprus | Nicosia | 753,000 | 1978 | | 11. Fiji | Suva | 790,000 | 1978 | | 12. The Gambia | Banjul | 1,216,000 | 1978 | | 13. Ghana | Accra | 18,460,000 | 1978 | | 14. Grenada | St George's | 96,000 | 1978 | | 15. Guyana | Georgetown | 849,000 | 1991 | | 16. India | New Delhi | 979,673,000 | 1979 | | 17. Jamaica | Kingston | 2,576,000 | 1978 | | 18. Kenya | Nairobi | 29,295,000 | 1978 | | 19. Kiribati | Tarawa | 86,000 | 1985 | | 20. Lesotho | Maseru | 2,058,000 | 1987 | | 21. Malawi | Lilongwe | 10,534,000 | 1979 | | 22. Malaysia | Kuala Lumpur | 22,180,000 | 1979 | | 23. Maldives | Malé | 263,000 | 1998 | | 24. Malta | Valletta | 377,000 | 1978 | | 25. Mauritius | Port Louis | 1,160,000 | 1978 | | 26. Namibia | Windhoek | 1,662,000 | 1991 | | 27. New Zealand | Wellington | 3,792,000 | 1978 | | 28. Nigeria | Abuja | 120,817,000 | 1978 | | 29. Pakistan | Islamabad | 131,582,000 | 1990 | | 30. Papua New Guinea | Port Moresby | 4,603,000 | 1978 | | 31. St Kitts &Nevis | Basseterre | 41,000 | 1991 | | 32. St Lucia | Castries | 152,000 | 1985 | | 33. Samoa | Apia | 169,000 | 1978 | | 34. Sierra Leone | Freetown | 4,855,000 | 1980 | | 35. Singapore | Singapore | 3,164,000 | 1978 | | 36. Solomon | Islands Honiara | 416,000 | 1985 | | 37. South Africa | Pretoria | 41,402,000 | 1994 | | 38. Sri Lanka | Colombo | 18,778,000 | 1978 | | 39. Swaziland | Mbabane | 989,000 | 1978 | | 40. Tanzania | Dar Es Salaam | 32,128,000 | 1979 | | 41. Tonga | Nuku'alofa | 99,000 | 1979 | | 42. Trinidad &Tobago | Port of Spain | 1,285,000 | 1978 | | 43. Tuvalu | Funafuti | 11,000 | 2000 | | 44. Uganda | Kampala | 20,897,000 | 1980 | | 45. United Kingdom | London | 59,055,000 | 1978 | | 46. Zambia | Lusaka | 9,666,000 | 1980 | |
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