Red List Index in Tonga
Tonga: Red List Index was 0.7501 index in 2025. ▼ Falling
Latest (2025)
0.7501 index
Change on year
down 0.5%
World rank
213th
of 261 countries
All-time high
0.8184 index
in 1994
All-time low
0.7501 index
in 2025
Years of data
46
1980–2025
Red List Index in Tonga, 1980–2025
Source: United Nations Statistics Division, SDG Global Database. Measured in index.
Analysis
The most recent figure for red list index in Tonga is 0.7501 index, measured in 2025. That is the lowest value across all 46 years on record.
Compared with earlier readings it is down 0.5% on the previous year and down 4.5% over ten years.
Over the whole period, red list index in Tonga peaked at 0.8184 index in 1994 and was at its lowest, 0.7501 index, in 2025.
That places Tonga 213th out of 261 countries with data for 2025, putting it in the bottom quarter.
The long-run direction has been consistently falling across the 46 years of available data.
Red List Index in Tonga, year by year
| Year | index | Change |
|---|---|---|
| 1980 | 0.814 index | — |
| 1981 | 0.8143 index | +0.0% |
| 1982 | 0.8146 index | +0.0% |
| 1983 | 0.8151 index | +0.1% |
| 1984 | 0.8153 index | +0.0% |
| 1985 | 0.8156 index | +0.0% |
| 1986 | 0.8158 index | +0.0% |
| 1987 | 0.8161 index | +0.0% |
| 1988 | 0.8165 index | +0.1% |
| 1989 | 0.8169 index | +0.0% |
| 1990 | 0.8171 index | +0.0% |
| 1991 | 0.8174 index | +0.0% |
| 1992 | 0.8178 index | +0.1% |
| 1993 | 0.818 index | +0.0% |
| 1994 | 0.8184 index | +0.0% |
| 1995 | 0.8181 index | -0.0% |
| 1996 | 0.8174 index | -0.1% |
| 1997 | 0.8166 index | -0.1% |
| 1998 | 0.8156 index | -0.1% |
| 1999 | 0.8143 index | -0.2% |
| 2000 | 0.8138 index | -0.1% |
| 2001 | 0.814 index | +0.0% |
| 2002 | 0.8142 index | +0.0% |
| 2003 | 0.8151 index | +0.1% |
| 2004 | 0.8146 index | -0.1% |
| 2005 | 0.8143 index | -0.0% |
| 2006 | 0.8136 index | -0.1% |
| 2007 | 0.8121 index | -0.2% |
| 2008 | 0.8101 index | -0.2% |
| 2009 | 0.8068 index | -0.4% |
| 2010 | 0.8032 index | -0.5% |
| 2011 | 0.8 index | -0.4% |
| 2012 | 0.7968 index | -0.4% |
| 2013 | 0.7928 index | -0.5% |
| 2014 | 0.7892 index | -0.5% |
| 2015 | 0.7851 index | -0.5% |
| 2016 | 0.7816 index | -0.4% |
| 2017 | 0.7778 index | -0.5% |
| 2018 | 0.7749 index | -0.4% |
| 2019 | 0.7716 index | -0.4% |
| 2020 | 0.7676 index | -0.5% |
| 2021 | 0.7639 index | -0.5% |
| 2022 | 0.7602 index | -0.5% |
| 2023 | 0.7564 index | -0.5% |
| 2024 | 0.7536 index | -0.4% |
| 2025 | 0.7501 index | -0.5% |
Tonga compared with similar countries
- Tonga's 0.7501 index is below the median for upper middle income countries, which is 0.8248 index, 91% of the median. (55 countries reporting)
- Tonga's 0.7501 index is below the median for East Asia & Pacific, which is 0.8085 index, 93% of the median. (33 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 0.8154 index | 0.814 index | 0.8169 index | 10 |
| 1990s | 0.8171 index | 0.8143 index | 0.8184 index | 10 |
| 2000s | 0.8129 index | 0.8068 index | 0.8151 index | 10 |
| 2010s | 0.7873 index | 0.7716 index | 0.8032 index | 10 |
| 2020s | 0.7586 index | 0.7501 index | 0.7676 index | 6 |
Countries ranked near Tonga
More development goals data for Tonga
- Number of refugees per 100,000 population, by country of origin 58.77 per 100,000 people (2025)
- Manufacturing value added per capita 286.2 constant US$ (2025)
- Number of transboundary breeds 18 (2025)
- Number of transboundary breeds (not extinct) 18 (2025)
- Number of transboundary breeds with unknown risk status 18 (2025)
- Number of local breeds with unknown risk status 5 (2025)
- Number of local breeds (not extinct) 5 (2025)
- Number of local breeds kept in the country 5 (2025)
- Infant deaths 19 (2024)
- Neonatal deaths 10 (2024)
Frequently asked questions
- What is red list index in Tonga?
- Red list index in Tonga was 0.7501 index in 2025, according to United Nations Statistics Division, SDG Global Database.
- What is the highest red list index recorded in Tonga?
- The highest recorded value was 0.8184 index in 1994.
- What is the lowest red list index recorded in Tonga?
- The lowest recorded value was 0.7501 index in 2025.
- How does Tonga rank for red list index?
- Tonga ranks 213th out of 261 countries with data for 2025.
- Is red list index rising or falling in Tonga?
- Over the last ten years it is down 4.5%. The long-run trend across the full record is falling.
- Where does this Tonga data come from?
- The figures come from United Nations Statistics Division, SDG Global Database, published as part of Red List Index. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 46 observations, free to reuse under UN SDG Global Database (open, attribution requested).