The only metropolises of this continent are located in Australia, with the exception of Auckland (New Zealand), on the other hand only three countries have more than one million inhabitants and therefore there are also few cities.60% of the population of Oceania lives in Australia and this is reflected in the ranking of the most populous cities, with six of the top ten urban centers found in this nation.
The first capital is only in 8th place, as both major Australian cities and New Zealand's only metropolis do not have this status.
| City | Urban aggl. | Population | Urban area | Country | Other cities in urban area |
| Sydney | 4,836,000 | 4,699,000 | 2,194 Kmē | Australia | |
| Melbourne | 4,709,000 | 4,586,000 | 2,880 Kmē | Australia | |
| Brisbane | 3,039,000 | 2,288,000 | 2,647 Kmē | Australia | Gold Coast |
| Perth | 2,101,000 | 2,044,000 | 1,720 Kmē | Australia | |
| Auckland | 1,537,000 | 1,537,000 | 541 Kmē | New Zealand | |
| Adelaide | 1,271,000 | 1,245,000 | 855 Kmē | Australia | |
| Honolulu | 864,000 | 343,000 | 440 Kmē | Hawaii (United States) | |
| Port Moresby | 514,000 | 514,000 | 240 Kmē | Papua New Guinea | |
| Canberra | 474,000 | 474,000 | 402 Kmē | Australia | |
| Wellington | 441,000 | 216,000 | 194 Kmē | New Zealand | Lower Hutt |
| Christchurch | 396,000 | 396,000 | 202 Kmē | New Zealand | |
| Newcastle | 349,000 | 349,000 | 296 Kmē | Australia | |
| Central Coast | 325,000 | 325,000 | 334 Kmē | Australia | |
| Sunshine Coast | 284,000 | 284,000 | 321 Kmē | Australia | |
| Wollongong | 280,000 | 280,000 | 237 Kmē | Australia | |
| Hobart | 197,000 | 197,000 | 248 Kmē | Australia | |
| Suva | 186,000 | 94,000 | 40 Kmē | Fiji | Nasinu |
| Hamilton | 185,000 | 185,000 | 119 Kmē | New Zealand | |
| Nouméa | 182,000 | 94,300 | 46 Kmē | New Caledonia (France) | Dumbéa |
| Geelong | 180,000 | 180,000 | 169 Kmē | Australia | |
| Townsville | 174,000 | 174,000 | 261 Kmē | Australia | |
| Honiara | 170,000 | 130,000 | 22 Kmē | Solomon Islands | |
| Tauranga | 162,000 | 162,000 | 168 Kmē | New Zealand | |
| Cairns | 153,000 | 153,000 | 254 Kmē | Australia |
* data on urban agglomerations updated to 2023 (estimates), those on population according to official data or more recent estimates of the national statistical services, when different from urban agglomerations.