Oceania population

Oceania is the smallest region by far, home to barely one percent of humanity, but it is still growing and is projected to keep doing so through 2100. Its numbers combine two very different stories: the immigration-fed growth of Australia and New Zealand, and the high birth rates of Papua New Guinea and the Pacific islands. Together they lift the region from about 47 million people today toward 73 million by the end of the century.

Oceania is home to about 46.9 million people in 2026, roughly 1% of the world total, spread across 23 countries and territories. Its most populous are Australia, Papua New Guinea, New Zealand.

Oceania is still growing and is not projected to peak before 2100. The population rises toward about 72.8 million by 2100, +55.4% versus today. Its share of world population climbs from 1% to roughly 1%, the clearest sign of how the world's demographic centre of gravity is shifting.

These are the UN's medium-variant figures, the central scenario rather than a forecast. The further out they run the wider the plausible range, but the broad shape of Oceania's century is consistent across the main variants.