45 Million
Largest Country: Australia
26.6 Million

Oceania Overview

Trends in Oceania

Oceania is the world’s smallest region and includes countries and territories with a wide range of fertility levels and population growth rates. It includes only three countries with a population of one million or more: Australia, Papua New Guinea, and New Zealand.

Oceania’s population is projected to increase 40% by 2050—to 63 million, up from 45 million in 2023. Australia, which accounts for 60% of the region’s current population, is the source for most of this projected growth (61%). Oceania’s total fertility rate is 2.1, though it ranges greatly among countries and territories, from 1.7 in French Polynesia and 1.6 in Australia and New Zealand to 3.9 in Samoa and the Solomon Islands. The region is home to some of the world’s youngest areas and some of its oldest. In Samoa, Solomon Islands, Nauru, and Vanuatu, nearly 40% of people are under age 15. In Australia and New Zealand, 18% and 19% of the population is under age 15, respectively, and 17% are ages 65 and older.


Oceania Population, mid-2023

In millions

Total Fertility Rate

Lifetime births per woman

Internally Displaced Persons Due to Disasters, End of 2022

Number of Internally Displaced Persons

Data Unavailable

Population Age Structure

Age distribution by sub-region

Projected Population Change, 2023-2050

Percent change in population

World Population Data Sheet

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