Tonga—Gini Index
Tonga's gini index was 27.1 in 2021, ranking #103 out of 115 countries. Over the past 4 years, the highest recorded value was 37.7 (2000) and the lowest was 27.1 (2021). Data sourced from the World Bank World Development Indicators.
Historical Data
| Year | Value | Change |
|---|---|---|
| 2021 | 27.1 | -19.1% |
| 2015 | 33.5 | -10.7% |
| 2009 | 37.5 | -0.5% |
| 2000 | 37.7 |
Top Countries — Gini Index
| # | Country | Value | Year |
|---|---|---|---|
| 1 | Colombia | 54.4 | 2024 |
| 2 | South Africa | 54.1 | 2022 |
| 3 | Zambia | 51.5 | 2022 |
| 4 | Brazil | 50.3 | 2024 |
| 5 | Panama | 49.7 | 2024 |
| 6 | Mozambique | 49.6 | 2022 |
| 7 | Ecuador | 45.9 | 2025 |
| 8 | Honduras | 45.7 | 2024 |
| 9 | Costa Rica | 45.5 | 2025 |
| 10 | Guatemala | 45.2 | 2023 |
About This Indicator
Definition
Gini index measures the extent to which the distribution of income (or, in some cases, consumption expenditure) among individuals or households within an economy deviates from a perfectly equal distribution. A Lorenz curve plots the cumulative percentages of total income received against the cumulative number of recipients, starting with the poorest individual or household. The Gini index measures the area between the Lorenz curve and a hypothetical line of absolute equality, expressed as a percentage of the maximum area under the line. Thus a Gini index of 0 represents perfect equality, while an index of 100 implies perfect inequality.
Methodology
The Gini coefficient is calculated from household survey data on income or consumption. The World Bank calculates it from the Lorenz curve, which plots the cumulative share of income against the cumulative share of the population (ranked from poorest to richest). The Gini equals 1 minus twice the area under the Lorenz curve. Data comes from national household surveys harmonized under the World Bank's PovcalNet project.
Unit
Gini index (0–100)