Thailand vs Viet Nam: population pyramids in 2027
ThailandViet Nam
Each bar is the share of the total population at that single year of age (men left, women right), so countries of different sizes can be compared.
Thailand and Viet Nam compared
In 2027, Thailand has a population of 71.5 million and Viet Nam 102.4 million; Viet Nam is about 1.4 times the size of Thailand.
The share aged 65 and over is 17.0% in Thailand and 10.1% in Viet Nam, 6.9 points higher in Thailand. The median age is 42.2 years in Thailand and 35.1 years in Viet Nam.
The total fertility rate is 1.19 in Thailand and 1.85 in Viet Nam, both below the replacement level of about 2.1. Life expectancy at birth is 77.3 years in Thailand and 75.2 years in Viet Nam.
By 2050, the population of Thailand is projected to shrink by 7.0% and that of Viet Nam to grow by 7.4% compared with 2027.
GDP per person is $8,057 in Thailand (2025) and $5,066 in Viet Nam (2025).
Figures from 2024 are UN medium-variant projections.
Key figures (2027)
| Thailand | Viet Nam | |
|---|---|---|
| Population | 71.5 million | 102.4 million |
| Aged 0–14 | 13.9% | 22.2% |
| Aged 15–64 | 69.1% | 67.7% |
| Aged 65+ | 17.0% | 10.1% |
| Median age | 42.2 yrs | 35.1 yrs |
| Old-age dependency | 24.6 | 14.9 |
| Total fertility rate | 1.19 | 1.85 |
| Life expectancy | 77.3 yrs | 75.2 yrs |
| Population growth | -0.11% | +0.53% |
| Net migration (per year) | +34,464 | -42,913 |
| GDP | $577B (2025) | $515B (2025) |
| GDP per person | $8,057 (2025) | $5,066 (2025) |
| Unemployment | 0.8% (2025) | 1.5% (2025) |
Economic figures are the latest year published for each country.