Population of the official entrance age to secondary general in Thailand
Thailand: Population of the official entrance age to secondary general was 386,955 in 2025. ▼ Falling
Latest (2025)
386,955
Change on year
down 0.9%
World rank
37th
of 220 countries
All-time high
611,906
in 1986
All-time low
382,293
in 2023
Years of data
56
1970–2025
Population of the official entrance age to secondary general in Thailand, 1970–2025
Source: UNESCO Institute for Statistics.
Analysis
The most recent figure for population of the official entrance age to secondary general in Thailand is 386,955, measured in 2025.
The figure is down 0.9% on the previous year and down 12.9% over ten years.
Over the whole period, population of the official entrance age to secondary general in Thailand peaked at 611,906 in 1986 and was at its lowest, 382,293, in 2023.
That places Thailand 37th out of 220 countries with data for 2025, putting it in the top quarter.
The long-run direction has been consistently falling across the 56 years of available data.
Population of the official entrance age to secondary general in Thailand, year by year
| Year | Value | Change |
|---|---|---|
| 1970 | 428,891 | — |
| 1971 | 442,706 | +3.2% |
| 1972 | 456,701 | +3.2% |
| 1973 | 471,994 | +3.3% |
| 1974 | 486,775 | +3.1% |
| 1975 | 502,499 | +3.2% |
| 1976 | 518,924 | +3.3% |
| 1977 | 536,106 | +3.3% |
| 1978 | 554,197 | +3.4% |
| 1979 | 583,422 | +5.3% |
| 1980 | 595,654 | +2.1% |
| 1981 | 605,494 | +1.7% |
| 1982 | 611,895 | +1.1% |
| 1983 | 610,948 | -0.2% |
| 1984 | 606,693 | -0.7% |
| 1985 | 608,097 | +0.2% |
| 1986 | 611,906 | +0.6% |
| 1987 | 610,710 | -0.2% |
| 1988 | 602,340 | -1.4% |
| 1989 | 594,764 | -1.3% |
| 1990 | 585,538 | -1.6% |
| 1991 | 571,865 | -2.3% |
| 1992 | 570,815 | -0.2% |
| 1993 | 572,912 | +0.4% |
| 1994 | 574,834 | +0.3% |
| 1995 | 573,379 | -0.3% |
| 1996 | 565,462 | -1.4% |
| 1997 | 556,512 | -1.6% |
| 1998 | 550,223 | -1.1% |
| 1999 | 546,568 | -0.7% |
| 2000 | 536,252 | -1.9% |
| 2001 | 536,252 | +0.0% |
| 2002 | 537,187 | +0.2% |
| 2003 | 539,465 | +0.4% |
| 2004 | 540,981 | +0.3% |
| 2005 | 543,313 | +0.4% |
| 2006 | 542,433 | -0.2% |
| 2007 | 533,606 | -1.6% |
| 2008 | 520,621 | -2.4% |
| 2009 | 508,608 | -2.3% |
| 2010 | 494,981 | -2.7% |
| 2011 | 469,406 | -5.2% |
| 2012 | 464,592 | -1.0% |
| 2013 | 458,509 | -1.3% |
| 2014 | 451,625 | -1.5% |
| 2015 | 444,356 | -1.6% |
| 2016 | 436,989 | -1.7% |
| 2017 | 429,660 | -1.7% |
| 2018 | 422,355 | -1.7% |
| 2019 | 415,008 | -1.7% |
| 2020 | 407,524 | -1.8% |
| 2021 | 399,783 | -1.9% |
| 2022 | 391,674 | -2.0% |
| 2023 | 382,293 | -2.4% |
| 2024 | 390,486 | +2.1% |
| 2025 | 386,955 | -0.9% |
Thailand compared with similar countries
- Thailand's 386,955 is above the median for upper middle income countries, which is 59,702, 6.5× the median. (58 countries reporting)
- Thailand's 386,955 is above the median for East Asia & Pacific, which is 22,855, 16.9× the median. (35 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 498,222 | 428,891 | 583,422 | 10 |
| 1980s | 605,850 | 594,764 | 611,906 | 10 |
| 1990s | 566,811 | 546,568 | 585,538 | 10 |
| 2000s | 533,872 | 508,608 | 543,313 | 10 |
| 2010s | 448,748 | 415,008 | 494,981 | 10 |
| 2020s | 393,119 | 382,293 | 407,524 | 6 |
Countries ranked near Thailand
More education data for Thailand
- Teachers in secondary education, both sexes (number), gaps filled 243,991 (2025)
- Repeaters in primary education, all grades, both sexes (number), gaps 13,596 (2025)
- Enrolment in pre-primary education, male (number), gaps filled 758,147 (2025)
- Enrolment in pre-primary education, female (number), gaps filled 716,498 (2025)
- Secondary education, pupils, gaps filled 4.26 million (2025)
- Primary education, duration (years), annual growth rate 0 % change on previous year (2025)
- Primary education, pupils, gaps filled 4.45 million (2025)
- Primary education, pupils, annual growth rate -1.23 % change on previous year (2025)
- Primary education, pupils, per unit of GDP 0 units per US$ of GDP (2025)
- Primary education, pupils, per capita 0.0621 units per person (2025)
Frequently asked questions
- What is population of the official entrance age to secondary general in Thailand?
- Population of the official entrance age to secondary general in Thailand was 386,955 in 2025, according to UNESCO Institute for Statistics.
- What is the highest population of the official entrance age to secondary general recorded in Thailand?
- The highest recorded value was 611,906 in 1986.
- What is the lowest population of the official entrance age to secondary general recorded in Thailand?
- The lowest recorded value was 382,293 in 2023.
- How does Thailand rank for population of the official entrance age to secondary general?
- Thailand ranks 37th out of 220 countries with data for 2025.
- Is population of the official entrance age to secondary general rising or falling in Thailand?
- Over the last ten years it is down 12.9%. The long-run trend across the full record is falling.
- Where does this Thailand data come from?
- The figures come from UNESCO Institute for Statistics, published as part of Population of the official entrance age to secondary general education, male (number). Statizoid updates them automatically from the source API.
Download this data
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About this data
February 2026 Data Release