South Korea vs Thailand: Population, Persons for countries / Index for country … 9/26/2025
South Korea
51.22 million
in 2031
Thailand
71.10 million
in 2031
South Korea rank
9th
Thailand rank
7th
Population, Persons for countries / Index for country … 9/26/2025 over time
- South Korea
- Thailand
How they compare
Thailand currently reports 71.10 million against 51.22 million in South Korea, a difference of 19.88 million.
That makes Thailand's figure about 1.4 times South Korea's.
Across all 52 years both countries report, Thailand has been ahead every year.
South Korea ranks 9th and Thailand ranks 7th of 26 countries.
Thailand has averaged higher in every one of the 6 decades both report.
Head to head by decade
| Decade | South Korea | Thailand | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 40.46 million | 51.58 million | 11.12 million | Thailand |
| 1990s | 44.82 million | 59.31 million | 14.49 million | Thailand |
| 2000s | 48.17 million | 65.67 million | 17.50 million | Thailand |
| 2010s | 50.78 million | 70.25 million | 19.47 million | Thailand |
| 2020s | 51.64 million | 71.59 million | 19.94 million | Thailand |
| 2030s | 51.27 million | 71.16 million | 19.89 million | Thailand |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher population, persons for countries / index for country groups, South Korea or Thailand?
- Thailand, at 71.10 million against 51.22 million in South Korea as of 2031.
- What is the difference in population, persons for countries / index for country groups between South Korea and Thailand?
- 19.88 million, with Thailand ahead.
- How many years of comparable data are there for South Korea and Thailand?
- 52 years are reported by both, from 1980 to 2031.
- How do South Korea and Thailand rank globally for population, persons for countries / index for country groups?
- South Korea ranks 9th and Thailand ranks 7th of 26 countries.
- Where does this data come from?
- International Monetary Fund, published as Population, Persons for countries / Index for country groups (9/26/2025). Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
The World Economic Outlook (WEO) database is created during the biannual WEO exercise, which begins in January and June of each year and results in the April and September/October WEO publication. Selected series from the publication are available in a database format.