Literacy rate, population 25-64 years, adjusted gender parity index in Tonga
Tonga: Literacy rate, population 25-64 years, adjusted gender parity index was 1.01 GPIA in 2023. ▲ Rising
Literacy rate, population 25-64 years, adjusted gender parity index in Tonga, 1976–2023
Source: UNESCO Institute for Statistics. Measured in GPIA.
Analysis
The most recent figure for literacy rate, population 25-64 years, adjusted gender parity index in Tonga is 1.01 GPIA, measured in 2023.
Compared with earlier readings it is up 1.0% over ten years.
Over the whole period, literacy rate, population 25-64 years, adjusted gender parity index in Tonga peaked at 1.15 GPIA in 2019 and was at its lowest, 1 GPIA, in 1976.
That places Tonga 6th out of 87 countries with data for 2023, putting it in the top 10%.
Literacy rate, population 25-64 years, adjusted gender parity index in Tonga, year by year
| Year | GPIA | Change |
|---|---|---|
| 1976 | 1 GPIA | — |
| 1996 | 1 GPIA | +0.0% |
| 2006 | 1 GPIA | +0.0% |
| 2011 | 1 GPIA | +0.0% |
| 2016 | 1.01 GPIA | +1.0% |
| 2019 | 1.15 GPIA | +13.9% |
| 2023 | 1.01 GPIA | -12.2% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 1 GPIA | 1 GPIA | 1 GPIA | 1 |
| 1990s | 1 GPIA | 1 GPIA | 1 GPIA | 1 |
| 2000s | 1 GPIA | 1 GPIA | 1 GPIA | 1 |
| 2010s | 1.05 GPIA | 1 GPIA | 1.15 GPIA | 3 |
| 2020s | 1.01 GPIA | 1.01 GPIA | 1.01 GPIA | 1 |
Countries ranked near Tonga
More education data for Tonga
- Theoretical duration of upper secondary education (years), annual 0 % change on previous year (2025)
- Theoretical duration of secondary education (years), annual growth 0 % change on previous year (2025)
- Start of the academic school year (tertiary education), gaps filled 2,024 tertiary education (2024)
- Start of the academic school year (tertiary education), annual growth 0.0494 % change on previous year (2024)
- Primary education, teachers, gaps filled 818 (2024)
- Duration of pre primary education, annual growth rate 0 % change on previous year (2025)
- Duration of pre primary education 2 (2025)
- Official entrance age to pre primary education 4 (2025)
- Population ages 15-64 58.2% (2025)
- Population ages 0-14 34.9% (2025)
Frequently asked questions
- What is literacy rate, population 25-64 years, adjusted gender parity index in Tonga?
- Literacy rate, population 25-64 years, adjusted gender parity index in Tonga was 1.01 GPIA in 2023, according to UNESCO Institute for Statistics.
- What is the highest literacy rate, population 25-64 years, adjusted gender parity index recorded in Tonga?
- The highest recorded value was 1.15 GPIA in 2019.
- What is the lowest literacy rate, population 25-64 years, adjusted gender parity index recorded in Tonga?
- The lowest recorded value was 1 GPIA in 1976.
- How does Tonga rank for literacy rate, population 25-64 years, adjusted gender parity index?
- Tonga ranks 6th out of 87 countries with data for 2023.
- Is literacy rate, population 25-64 years, adjusted gender parity index rising or falling in Tonga?
- Over the last ten years it is up 1.0%. The long-run trend across the full record is rising.
- Where does this Tonga data come from?
- The figures come from UNESCO Institute for Statistics, published as part of Literacy rate, population 25-64 years, adjusted gender parity index (GPIA). Statizoid updates them automatically from the source API.
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About this data
February 2026 Data Release