| a | | Projected est. (medium fertility variant). |
| b | | 2023 |
| c | | Refers to the Governorate of Grand Algiers. |
| d | | 2019 |
| e | | 2024 |
| f | | Estimate. |
| g | | Algiers |
| h | | Calculated by the UN Statistics Division from national indices. |
| 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 a study in 2018, the government estimates 173,600 people live in the camps. UN agencies use different points of reference for the population living in the camps. See https://algeria.un.org/sites/default/files/2024-01/SRRP%20-%20English.pdf. |
| m | | Est. should be viewed with caution as these are derived from scarce data. |
| n | | Based on calendar year (January 1 to December 31). |
| o | | 2022 |
| p | | 2011 |
| q | | Data at 1 January of the reporting year. |
| r | | Population aged 15 years and over. |
| s | | Break in the time series. |
| t | | 2017 |
| u | | Including nationals residing abroad. |