Sydney is the state capital of New South Wales and the most populous city in Australiaand Oceania. Located on Australia's east coast, the metropolis surrounds Port Jackson and extends about 70 km (43.5 mi) on its periphery towards the Blue Mountains to the west, Hawkesbury to the north, and Macarthur to the south. Sydney is made up of 658 suburbs, 40 local government areas and 15 contiguous regions. Residents of the city are known as "Sydneysiders". As of June 2017, Sydney's estimated metropolitan population was 5,131,326, and is home to approximately 65% of the state's population.

Nouméa is the capital and largest city of the French special collectivity of New Caledonia. It is situated on a peninsula in the south of New Caledonia's main island, Grande Terre, and is home to the majority of the island's European, Polynesian (Wallisians, Futunians, Tahitians), Indonesian, and Vietnamesepopulations, as well as many Melanesians, Ni-Vanuatu and Kanaks who work in one of the South Pacific's most industrialised cities. The city lies on a protected deepwater harbour that serves as the chief port for New Caledonia.

At the August 2014 census, there were 179,509 inhabitants in the metropolitan area of Greater Nouméa (French: agglomération du Grand Nouméa), 99,926 of whom lived in the city (commune) of Nouméa proper. 66.8% of the population of New Caledonia live in Greater Nouméa, which covers the communes of Nouméa, Le Mont-Dore, Dumbéa and Païta.

Port Vila is the capital and largest city of Vanuatu and is on the island of Efate.

Its population in the last census (2009) was 44,040, an increase of 35% on the previous census result (29,356 in 1999). In 2009, the population of Port Vila formed 18.8% of the country's population, and 66.9% of the population of Efate.

On the south coast of the island of Efate, in Shefa Province, Port Vila is the economic and commercial centre of Vanuatu. The mayor is Mambo Albert Sandy Daniel, of the Vanua'aku Pati, elected in January 2018; his deputy is Eric Puyo Festa, of the Grin Confederation.

On March 13, 2015, Port Vila bore extensive damage from Cyclone Pam.

Suva is the capital and largest metropolitan city in Fiji. It is located on the southeast coast of the island of Viti Levu, in the Rewa Province, Central Division.

In 1877, it was decided to make Suva the capital of Fiji, as the geography of former main European settlement at Levuka on the island of Ovalau, Lomaiviti province proved too restrictive. The administration of the colony was moved from Levuka to Suva in 1882.

At the 2007 census, the city of Suva had a population of 85,691. Including independent suburbs, the population of the Greater Suva urban area was 172,399 at the 2007 census. Suva, along with the bordering towns of Lami, Nasinu, and Nausori have a total urban population of around 330,000, over a third of the nation's population. This urban complex (not including Lami) is known also as the Suva-Nausori corridor.

Suva is the political, economic, and cultural centre of Fiji. It is also the economic and cultural capital of the Pacific, hosting the majority of regional headquarters of major corporations, as well as international agencies and diplomatic missions in the region. The city also has a thriving arts and performance scene, with a growing reputation as the region’s fashion capital.