Australia is a country in Australia/New Zealand, Oceania. In 2025 it has about 27.0 million people (UN estimate), the 55th most people of the 193 UN member states.
UN member since 1945Population: 55th
Australiaオーストラリア
Region
Australia/New Zealand, Oceania
Population
about 27.0 million (55th)
Area
7,692,024 km² (6th)
UN member since
November 1, 1945
Ranks are among the 193 UN member states, from most people and from largest area.
Australia in numbers
In 2025 the population is about 27.0 million, the 55th most people of the 193 UN member states. That is about 1/4 of Japan’s (about 123 million).
The area is 7,692,024 km², the 6th largest of the 193. That is about 20 times Japan’s area.
If we work out the number of people per square kilometer (population density), it is about 3.5.
Joining the United Nations
Australia joined the United Nations on November 1, 1945.
It was a member before Japan joined in 1956.
Think about it
Q1Compare Australia’s population rank and area rank. What do you notice?
Q2Find Australia on a map or globe. Which countries are around it?
Q3Choose one thing you want to know more about Australia, and look it up.
There is no single right answer. Talking it over with someone at home is a good way to learn.
Did you know? — There are 2 UN member states in Australia/New Zealand. The one with the most people is Australia.