Thailand: population and ages

In mid-1950 there were 20.4 million people, so the population is now 3.5 times as large.

The UN projects 566,000 births and 662,000 deaths in 2026, 95,800 more deaths than births.

Deaths have outnumbered births every year since 2022.

The median age is 41.0, which is 9.9 years above the world’s 31.1.

14% of the people are under 15 and 16% are 65 or older (world: 24% and 11%).

People aged 65 and over have outnumbered children under 15 since 2024.

Women have 1.2 children on average at today’s rates (world: 2.2), against 6.4 in 1950.

Life expectancy at birth is 77.1 years, above the world’s 73.8. In 1950 it was 45.2.

For mid-2050 the UN projects 66.4 million people, 7.2% fewer than now, with a median age of 48.6.

By the death rates of 2023, life expectancy at birth was 76.4 years. People who had reached 65 could expect 21.2 more years for women and 17.8 for men.

On 1 January 2026, there are 23.6 people aged 65 or more for every 100 aged 15 to 64. For 2050, the UN projects 49.9.

For 2100 the UN projects a population of 45.6 million, with a 95 percent prediction interval of 23.7 million to 70.8 million.

Life expectancy at birth is a period measure. It sums up the death rates of one year and is not a forecast of how long the babies born that year will live.

In mid-2024, 3.18 million international migrants lived here, 4.4% of the population.

In mid-2024, 1.18 million people from here lived in other countries.