| Region | Eastern Africa | |
| Population (000, 2021) | 280a | |
| Pop. density (per km2, 2021) | 745.4a | |
| Capital city | Mamoudzou | |
| Capital city pop. (000, 2021) | 6.2b | |
| Sex ratio (m per 100 f) | 96.8a | |
| National currency | Euro (EUR) | |
| Exchange rate (per US$) | 0.8c |
| 2010 | 2015 | 2021 | |
| International trade: exports (million current US$) | 6d | ... | ... |
| International trade: imports (million current US$) | 309d | ... | ... |
| International trade: balance (million current US$) | -303d | ... | ... |
| 2010 | 2015 | 2021 | |
| Population growth ratee (average annual %) | 3.2 | 2.8 | 2.6c |
| Urban population (% of total population) | 49 | 47 | 45.9f |
| Urban population growth ratee (average annual %) | 2.7 | 2 | ... |
| Fertility rate, totale (live births per woman) | 4.6 | 4.1 | 3.7c |
| Life expectancy at birthe (females/males, years) | 81.9 / 74.5 | 82.9 / 76.0 | 82.9 / 76.0c |
| Population age distribution (0-14/60+ years old, %) | 42.9 / 5.1 | 41.7 / 5.6 | 38.4 / 6.2a |
| International migrant stockg (000/% of total pop.) | 72.8 / 34.9 | 81.4 / 33.9 | 111.5 / 40.9c |
| Infant mortality ratee (per 1 000 live births) | 5.6 | 4.2 | 4.2c |
| Intentional homicide rate (per 100 000 pop.) | 5.9h | ... | ... |
| 2010 | 2015 | 2021 | |
| Threatened species (number) | 69 | 84 | 113 |
| Forested area (% of land area) | 38.5 | 37.8 | 37.4b |
| Important sites for terrestrial biodiversity protected (%) | 63.1 | 63.1 | 63.6c |