| a | | Projected est. (medium fertility variant). |
| b | | 2023 |
| c | | African Financial Community (CFA) Franc, Bank of Central African States (BEAC). |
| d | | 2019 |
| e | | 2024 |
| f | | Estimate. |
| g | | Brazzaville |
| h | | 2021 |
| i | | Data refers to a 5-year period preceding the reference year. |
| j | | Calculated by the UN Statistics Division. |
| k | | Including refugees. |
| l | | Based on calendar year (January 1 to December 31). |
| m | | 2022 |
| n | | 2011 |
| o | | 2018 |
| p | | 2012 |
| q | | 2014 |
| r | | Data at 1 January of the reporting year. |
| s | | Higher Education only. |
| t | | Overestimated or based on overestimated data. |
| u | | Provisional data. |