Republic of Korea vs Thailand: Population, Persons for countries / Index for country groups
Republic of Korea
51.22 million
in 2031
Thailand
71.10 million
in 2031
Republic of Korea rank
9th
Thailand rank
7th
Population, Persons for countries / Index for country groups over time
- Republic of Korea
- Thailand
How they compare
Thailand currently reports 71.10 million against 51.22 million in Republic of Korea, a difference of 19.88 million.
That makes Thailand's figure about 1.4 times Republic of Korea's.
Across all 52 years both countries report, Thailand has been ahead every year.
Republic of 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 | Republic of 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, Republic of Korea or Thailand?
- Thailand, at 71.10 million against 51.22 million in Republic of Korea as of 2031.
- What is the difference in population, persons for countries / index for country groups between Republic of Korea and Thailand?
- 19.88 million, with Thailand ahead.
- How many years of comparable data are there for Republic of Korea and Thailand?
- 52 years are reported by both, from 1980 to 2031.
- How do Republic of Korea and Thailand rank globally for population, persons for countries / index for country groups?
- Republic of 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.