| Flag |
Member |
Population |
Terrain |
Coastline (km) |
 |
American Samoa |
68,200 (2007) |
five volcanic islands with rugged peaks and limited coastal plains, two coral atolls (Rose Island, Swains Island) |
116 |
 |
Commonwealth of the Northern Marianas |
79,100 (2005) |
southern islands are limestone with level terraces and fringing coral reefs; northern islands are volcanic |
1,482 |
 |
Cook Islands |
21,100 (2007) |
low coral atolls in north; volcanic, hilly islands in south |
120 |
 |
Fiji |
833,897 (2007) |
mountainous of volcanic origin, coral atolls |
1,129 |
 |
French Polynesia |
256,200 (2007) |
mixture of rugged high islands and low islands with reefs |
2,525 |
 |
Guam |
173,456 (2007) |
volcanic origin, surrounded by coral reefs; relatively flat coralline limestone plateau (source of most fresh water), with steep coastal cliffs and narrow coastal plains in north, low hills in center, mountains in south |
125.5 |
 |
Kiribati |
92,533 (2007) |
low-lying coral atolls |
1,143 |
 |
Marshall Islands |
52,701 (2007) |
low coral limestone and sand islands |
370 |
 |
Federated State of Micronesia |
110,500 (2005) |
low coral atolls, volcanic, mountainous |
6,112 |
 |
Nauru |
13,287 (2006) |
sandy beach, coral reefs, phosphate plateau |
30 |
 |
New Caledonia |
240,390 (2007) |
coastal plains with interior mountains |
2,254 |
 |
Niue |
1,679 (2007) |
limestone cliffs, central plateau |
64 |
 |
Palau |
21,196 (2007) |
low coral islands, mountainous main island |
1,519 |
 |
Papua New Guinea |
5,887,000 (2007) |
narrow coastal plains, mountains |
5,152 |
 |
Samoa |
179,186 (2006) |
narrow coastal plains, interior mountains |
403 |
 |
Solomon Islands |
186,649 (2007) |
low coral atolls, rugged mountains |
5,313 |
 |
Timor-Leste |
947,000 (2005) |
mountainous |
706 |
 |
Tonga |
114,689 (2006) |
coral formation, volcanic |
419 |
 |
Tuvalu |
11,000 (2006) |
low-lying and narrow coral atolls |
24 |
 |
Vanuatu |
221,417 (2007) |
narrow coastal plains, mountains of volcanic origin |
2,528 |
