Which country in Oceania has the largest population?

Australia has the largest population in Oceania: 28 million people (2025). Next come Papua New Guinea (11 million people) and New Zealand (5.3 million people).

Which country in Oceania has the smallest population?

Nauru, with 12,025 people (2025).

What is the typical population of a country in Oceania?

The median of the 13 countries in Oceania is 219,306 people: half are above it, half below. The median, not the average, because a few countries at the top would drag an average far above almost everyone.

Where do the figures come from?

Mid-year population estimate: everyone living there, whatever their citizenship. Source: World Bank, 2025. Only independent states are ranked; territories are listed separately. A country’s continent follows Natural Earth; the handful of island states it files under the open ocean are placed by their UN subregion.

Countries in Oceania by population

Mid-year population estimate: everyone living there, whatever their citizenship. 13 countries in Oceania, highest first. World Bank, 2025

See it on the map

Highest

27,614,411

Australia

Median country

219,306

half above, half below

Lowest

12,025

Nauru

Countries in Oceania by population, World Bank, 2025
#	Country	People	Region
1	Australia	27,614,411	Australia and New Zealand
2	Papua New Guinea	10,762,817	Melanesia
3	New Zealand	5,324,700	Australia and New Zealand
4	Fiji	933,154	Melanesia
5	Solomon Islands	838,645	Melanesia
6	Vanuatu	335,169	Melanesia
7	Samoa	219,306	Polynesia
8	Kiribati	136,488	Micronesia
9	Micronesia	113,683	Micronesia
10	Tonga	103,742	Polynesia
11	Marshall Islands	36,282	Micronesia
12	Palau	17,663	Micronesia
13	Nauru	12,025	Micronesia

Territories and other places

Not ranked: dependencies of the states above, places whose status is disputed. Highest first.

Place	People	Status
New Caledonia	295,333	Territory of France
French Polynesia	282,465	Territory of France
Guam	168,999	Territory of United States of America
American Samoa	46,029	Territory of United States of America
Northern Mariana Islands	43,541	Territory of United States of America
Cook Islands	14,222	Territory of New Zealand
Wallis and Futuna	11,558	Territory of France
Norfolk Island	2,188	Territory of Australia
Niue	1,821	Territory of New Zealand
Pitcairn Islands	50	Territory of United Kingdom

Questions

Which country in Oceania has the largest population?: Australia has the largest population in Oceania: 28 million people (2025). Next come Papua New Guinea (11 million people) and New Zealand (5.3 million people).
Which country in Oceania has the smallest population?: Nauru, with 12,025 people (2025).
What is the typical population of a country in Oceania?: The median of the 13 countries in Oceania is 219,306 people: half are above it, half below. The median, not the average, because a few countries at the top would drag an average far above almost everyone.
Where do the figures come from?: Mid-year population estimate: everyone living there, whatever their citizenship. Source: World Bank, 2025. Only independent states are ranked; territories are listed separately. A country’s continent follows Natural Earth; the handful of island states it files under the open ocean are placed by their UN subregion.

Source: World Bank. Where the World Bank has no estimate, the population is Wikidata’s. Countries sharing a value share a rank. All sources.