Cambodia is a country in South-Eastern Asia, Asia. In 2025 it has about 17.8 million people (UN estimate), the 72nd most people of the 193 UN member states.
UN member since 1955Population: 72nd
Cambodiaカンボジア
Region
South-Eastern Asia, Asia
Population
about 17.8 million (72nd)
Area
181,035 km² (86th)
UN member since
December 14, 1955
Ranks are among the 193 UN member states, from most people and from largest area.
Cambodia in numbers
In 2025 the population is about 17.8 million, the 72nd most people of the 193 UN member states. That is about 1/6 of Japan’s (about 123 million).
The area is 181,035 km², the 86th largest of the 193. That is about 1/2 of Japan’s area.
If we work out the number of people per square kilometer (population density), it is about 99.
Joining the United Nations
Cambodia joined the United Nations on December 14, 1955.
It was a member before Japan joined in 1956.
15 other countries joined on the same day.
Think about it
Q1Compare Cambodia’s population rank and area rank. What do you notice?
Q2Find Cambodia on a map or globe. Which countries are around it?
Q3Choose one thing you want to know more about Cambodia, 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 11 UN member states in South-Eastern Asia. The one with the most people is Indonesia.