Reported cases of measles, per square kilometre in Tonga
Tonga: Reported cases of measles, per square kilometre was 0.0167 Cases per square kilometre in 2023. ◆ Volatile
Reported cases of measles, per square kilometre in Tonga, 1974–2023
Source: Statizoid (derived). Measured in Cases per square kilometre.
Analysis
Tonga recorded 0.0167 Cases per square kilometre for reported cases of measles, per square kilometre in 2023.
Over the whole period, reported cases of measles, per square kilometre in Tonga peaked at 3.45 Cases per square kilometre in 1976 and was at its lowest, 0 Cases per square kilometre, in 1975.
Tonga ranks 18th of 205 countries on this measure, in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Reported cases of measles, per square kilometre in Tonga, year by year
| Year | Cases per square kilometre | Change |
|---|---|---|
| 1974 | 0.0472 Cases per square kilometre | — |
| 1975 | 0 Cases per square kilometre | -100.0% |
| 1976 | 3.45 Cases per square kilometre | — |
| 1977 | 0.1167 Cases per square kilometre | -96.6% |
| 1978 | 0.0236 Cases per square kilometre | -79.8% |
| 1979 | 0.7264 Cases per square kilometre | +2976.5% |
| 1980 | 3.24 Cases per square kilometre | +346.7% |
| 1981 | 0.2597 Cases per square kilometre | -92.0% |
| 1982 | 0.0264 Cases per square kilometre | -89.8% |
| 1983 | 0.05 Cases per square kilometre | +89.5% |
| 1984 | 0.0069 Cases per square kilometre | -86.1% |
| 1985 | 0.5722 Cases per square kilometre | +8140.0% |
| 1986 | 0.3236 Cases per square kilometre | -43.4% |
| 1987 | 0 Cases per square kilometre | -100.0% |
| 1988 | 0 Cases per square kilometre | — |
| 1989 | 0.0347 Cases per square kilometre | — |
| 1990 | 0.0903 Cases per square kilometre | +160.0% |
| 1991 | 0.025 Cases per square kilometre | -72.3% |
| 1992 | 0.0139 Cases per square kilometre | -44.4% |
| 1993 | 0 Cases per square kilometre | -100.0% |
| 1995 | 0 Cases per square kilometre | — |
| 1996 | 0 Cases per square kilometre | — |
| 1997 | 1.5 Cases per square kilometre | — |
| 1998 | 0.05 Cases per square kilometre | -96.7% |
| 1999 | 0.0083 Cases per square kilometre | -83.3% |
| 2000 | 0 Cases per square kilometre | -100.0% |
| 2001 | 0.0056 Cases per square kilometre | — |
| 2002 | 0 Cases per square kilometre | -100.0% |
| 2003 | 0 Cases per square kilometre | — |
| 2004 | 0 Cases per square kilometre | — |
| 2005 | 0 Cases per square kilometre | — |
| 2006 | 0 Cases per square kilometre | — |
| 2007 | 0 Cases per square kilometre | — |
| 2008 | 0 Cases per square kilometre | — |
| 2009 | 0 Cases per square kilometre | — |
| 2010 | 0 Cases per square kilometre | — |
| 2011 | 0 Cases per square kilometre | — |
| 2012 | 0 Cases per square kilometre | — |
| 2013 | 0 Cases per square kilometre | — |
| 2016 | 0 Cases per square kilometre | — |
| 2017 | 0 Cases per square kilometre | — |
| 2018 | 0 Cases per square kilometre | — |
| 2019 | 0.9153 Cases per square kilometre | — |
| 2023 | 0.0167 Cases per square kilometre | -98.2% |
Tonga compared with similar countries
- Tonga's 0.0167 Cases per square kilometre is above the median for upper middle income countries, which is 0.0001 Cases per square kilometre, 189.0× the median. (58 countries reporting)
- Tonga's 0.0167 Cases per square kilometre is above the median for East Asia & Pacific, which is 0 Cases per square kilometre, 1012.5× the median. (37 countries reporting)
Biggest year-on-year movements
Years where Reported cases of measles, per square kilometre in Tonga changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1985 | +8140.0% | 0.0069 Cases per square kilometre | 0.5722 Cases per square kilometre |
| 1979 | +2976.5% | 0.0236 Cases per square kilometre | 0.7264 Cases per square kilometre |
| 1980 | +346.7% | 0.7264 Cases per square kilometre | 3.24 Cases per square kilometre |
| 1990 | +160.0% | 0.0347 Cases per square kilometre | 0.0903 Cases per square kilometre |
| 1983 | +89.5% | 0.0264 Cases per square kilometre | 0.05 Cases per square kilometre |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 0.728 Cases per square kilometre | 0 Cases per square kilometre | 3.45 Cases per square kilometre | 6 |
| 1980s | 0.4518 Cases per square kilometre | 0 Cases per square kilometre | 3.24 Cases per square kilometre | 10 |
| 1990s | 0.1877 Cases per square kilometre | 0 Cases per square kilometre | 1.5 Cases per square kilometre | 9 |
| 2000s | 0.0006 Cases per square kilometre | 0 Cases per square kilometre | 0.0056 Cases per square kilometre | 10 |
| 2010s | 0.1144 Cases per square kilometre | 0 Cases per square kilometre | 0.9153 Cases per square kilometre | 8 |
| 2020s | 0.0167 Cases per square kilometre | 0.0167 Cases per square kilometre | 0.0167 Cases per square kilometre | 1 |
Countries ranked near Tonga
- 15 Armenia 0.0196 Cases per square kilometre compare
- 16 Djibouti 0.0192 Cases per square kilometre compare
- 17 Maldives 0.0168 Cases per square kilometre compare
- 19 Romania 0.016 Cases per square kilometre compare
- 20 Zimbabwe 0.0143 Cases per square kilometre compare
- 21 Sri Lanka 0.0131 Cases per square kilometre compare
More health data for Tonga
- Un projection of annual infant deaths, annual growth rate -33.33 % change on previous year (2100)
- Heat deaths vs projected death rates, annual growth rate 2.33 % change on previous year (2090)
- 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)
- Neonatal tetanus - number of reported cases, gaps filled 0 (2025)
- Population ages 00-04, female, annual growth rate -1.42 % change on previous year (2025)
- Population ages 00-04, female, per unit of GDP 0 units per US$ of GDP (2025)
- Population ages 00-04, female, per capita 0.0535 units per person (2025)
- Population ages 00-04, male, annual growth rate -1.36 % change on previous year (2025)
- Population ages 00-04, male, per unit of GDP 0 units per US$ of GDP (2025)
Frequently asked questions
- What is reported cases of measles, per square kilometre in Tonga?
- Reported cases of measles, per square kilometre in Tonga was 0.0167 Cases per square kilometre in 2023, according to Statizoid (derived).
- What is the highest reported cases of measles, per square kilometre recorded in Tonga?
- The highest recorded value was 3.45 Cases per square kilometre in 1976.
- What is the lowest reported cases of measles, per square kilometre recorded in Tonga?
- The lowest recorded value was 0 Cases per square kilometre in 1975.
- How does Tonga rank for reported cases of measles, per square kilometre?
- Tonga ranks 18th out of 205 countries with data for 2023.
- Where does this Tonga data come from?
- The figures come from Statizoid (derived), published as part of Reported cases of measles, per square kilometre. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 44 observations, free to reuse under Derived by Statizoid from the sources named on the page.
How this figure is calculated
Reported cases of measles divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.
Reported cases of measles ÷ Land area (sq. km)
Computed from
- Reported cases of measles World Health Organization – Global Health Observatory (2026) – with minor processing by Our World in Data
- Land area FAOSTAT, Food and Agriculture Organization of the United Nations (FAO)
Statizoid computes this series; the underlying measurements belong to the publishers named above. The arithmetic is applied to every country and year where both inputs report, and nothing is estimated unless the page says so.
About this data
Reported cases of measles divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.