Inequality in life expectancy in Tonga
Tonga: Inequality in life expectancy was 0.0792 in 2023. ▼ Falling
Inequality in life expectancy in Tonga, 2010–2023
Source: UNDP, Human Development Report (2025) – with minor processing by Our World in Data.
Analysis
In 2023, inequality in life expectancy in Tonga stood at 0.0792. That is the lowest value across all 14 years on record.
The figure is down 3.3% on the previous year and down 12.2% over ten years.
Over the whole period, inequality in life expectancy in Tonga peaked at 0.0933 in 2010 and was at its lowest, 0.0792, in 2023.
Tonga ranks 117th of 195 countries on this measure, in the middle of the range.
The long-run direction has been consistently falling across the 14 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 0.0889 | 0.0844 | 0.0933 | 10 |
| 2020s | 0.0816 | 0.0792 | 0.0832 | 4 |
Countries ranked near Tonga
More health data for Tonga
- Estimated changes in temperature-related death rates compared to projected death rates 834.5 deaths per 1,000 people (2090)
- Number of infants who die before age 1 2 deaths (2100)
- Deaths in armed conflicts based on where they occurred 0 deaths (2026)
- Deaths in armed conflicts by region 0 deaths (2026)
- Age population, age 25, male, interpolated 698 (2025)
- Age population, age 25, female, interpolated 842 (2025)
- Age population, age 24, male, interpolated 804 (2025)
- Age population, age 24, female, interpolated 908 (2025)
- Age population, age 23, male, interpolated 865 (2025)
- Age population, age 23, female, interpolated 951 (2025)
Frequently asked questions
- What is inequality in life expectancy in Tonga?
- Inequality in life expectancy in Tonga was 0.0792 in 2023, according to UNDP, Human Development Report (2025) – with minor processing by Our World in Data.
- What is the highest inequality in life expectancy recorded in Tonga?
- The highest recorded value was 0.0933 in 2010.
- What is the lowest inequality in life expectancy recorded in Tonga?
- The lowest recorded value was 0.0792 in 2023.
- How does Tonga rank for inequality in life expectancy?
- Tonga ranks 117th out of 195 countries with data for 2023.
- Is inequality in life expectancy rising or falling in Tonga?
- Over the last ten years it is down 12.2%. The long-run trend across the full record is falling.
- Where does this Tonga data come from?
- The figures come from UNDP, Human Development Report (2025) – with minor processing by Our World in Data, published as part of Inequality in life expectancy. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 14 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
The Atkinson index measures inequality on a scale from 0 to 1. Higher values indicate higher inequality. Inequality is measured here in terms of the number of years a newborn would live if age-specific mortality rates in the current year were to stay the same throughout its life.