| a | | Projected est. (medium fertility variant). |
| b | | Data refer to 1 October 2007. |
| c | | 2023 |
| d | | Major metropolitan areas. |
| e | | 2019 |
| f | | 2024 |
| g | | Data classified according to ISIC Rev. 4. |
| h | | Estimate. |
| i | | Calculated by the UN Statistics Division from national indices. |
| j | | Data refers to a 5-year period preceding the reference year. |
| k | | Calculated by the UN Statistics Division. |
| l | | Refers to foreign citizens. |
| m | | All data is as of end-2023. |
| n | | Data refer to fiscal years beginning 1 April. |
| o | | Data are based on SHA2011. |
| p | | 2022 |
| q | | 2014 |
| r | | Data at 1 January of the reporting year. |
| s | | Population aged 6 years and over. |
| t | | 2021 |
| u | | Data include Okinawa. |
| v | | Excluding nationals residing abroad. |
| w | | Development Assistance Committee member (OECD). |