Thailand is a country in South-Eastern Asia, Asia. In 2025 it has about 71.6 million people (UN estimate), the 20th most people of the 193 UN member states.
UN member since 1946Population: 20th
Thailandタイ
Region
South-Eastern Asia, Asia
Population
about 71.6 million (20th)
Area
513,140 km² (49th)
UN member since
December 16, 1946
Ranks are among the 193 UN member states, from most people and from largest area.
Thailand in numbers
In 2025 the population is about 71.6 million, the 20th most people of the 193 UN member states. That is about 1/1 of Japan’s (about 123 million).
The area is 513,140 km², the 49th largest of the 193. That is about the same as Japan’s area.
If we work out the number of people per square kilometer (population density), it is about 140.
Joining the United Nations
Thailand joined the United Nations on December 16, 1946.
It was a member before Japan joined in 1956.
Think about it
Q1Compare Thailand’s population rank and area rank. What do you notice?
Q2Find Thailand on a map or globe. Which countries are around it?
Q3Choose one thing you want to know more about Thailand, 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.