| Country | Capital | Population | Size |
|---|---|---|---|
| Australia | Canberra | 21,515,754 | 7,686,850 km² |
| Papua New Guinea | Port Moresby | 6,064,515 | 462,840 km² |
| New Zealand | Wellington | 4,252,277 | 268,680 km² |
| East Timor | Dili | 1,154,625 | 15,007 km² |
| Fiji | Suva | 875,983 | 18,270 km² |
| Solomon Islands | Honiara | 559,198 | 28,450 km² |
| French Polynesia | Papeete | 270,485 | 4,167 km² |
| Vanuatu | Port Vila | 221,552 | 12,200 km² |
| New Caledonia | Noumea | 216,494 | 19,060 km² |
| Samoa | Apia | 192,001 | 2,944 km² |
| Guam | Hagåtña | 159,358 | 549 km² |
| Tonga | Nuku'alofa | 122,580 | 748 km² |
| Micronesia | 107,708 | 702 km² | |
| Kiribati | Tarawa | 92,533 | 811 km² |
| Marshall Islands | Majuro | 65,859 | 181 km² |
| American Samoa | Pago Pago | 57,881 | 199 km² |
| Northern Mariana Islands | Saipan | 53,883 | 477 km² |
| Cook Islands | Avarua | 21,388 | 240 km² |
| Palau | 19,907 | 458 km² | |
| Wallis and Futuna | Mata-Utu | 16,025 | 274 km² |
| Tuvalu | Funafuti | 10,472 | 26 km² |
| Nauru | Yaren District | 10,065 | 21 km² |
| Niue | 2,166 | 260 km² | |
| Norfolk Island | 1,828 | 35 km² | |
| Tokelau | 1,466 | 10 km² | |
| Pitcairn Islands | 46 | 47 km² |