Thailand: population by age group 2023

As of July 2023, the population of those who were no older than 15 years old in Thailand amounted to approximately 11.7 million, which was the highest compared to other age groups. The next largest age group was between the ages of 46 and 55, with a total of around 11.3 million people. Despite a large proportion of adolescents in the country, the birth rate in Thailand has been declining gradually since 2011.

 Population development in Thailand

Thailand is the fourth most populated country among all ASEAN (Association of South-East Asian Nations) member countries. The recent total population in the country stood at around 70 million. While the total population number is expected to increase, the number of children in Thailand has decreased over the years.

Thailand’s aging society

  Thailand is one of the fastest-aging countries in the world. As of January 2023, the proportion of senior citizens in Thailand stood at 18 percent. The elderly population in the country is predicted to continue growing steadily in the future. Therefore, ASEAN established the ASEAN Centre for Active Aging and Innovation (ACAI) in 2018 under the leadership of Thailand. ACAI aims to promote healthy aging and enhance the lifelong quality of aging in Thailand and other ASEAN countries.

Resident population in Thailand as of July 2023, by age group (in millions)

Characteristic	Population in millions
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Release date

August 2023

More information

Region

Thailand

Survey time period

July 2023

Supplementary notes

Figures include only the registered population.

The presented data is calculated manually by summing up the age group from the categories according to the source.

Date used here is the date of access. Source did not provide a release date

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