| a | | Projected estimate (medium fertility variant). |
| b | | 2022 |
| c | | Refers to the urban parts of the municipalities San Salvador, Mejicanos, Soyapango, Delgado, Ilopango, Cuscatancingo, Ayutuxtepeque and San Marcos. |
| d | | 2019 |
| e | | Data classified according to ISIC Rev. 4. |
| f | | Excludes irrigation canals and landscaping care. |
| g | | Excludes publishing activities. Includes irrigation canals. |
| h | | Includes publishing activities and landscape care. Excludes repair of personal and household goods. |
| i | | Estimate. |
| j | | Urban areas. |
| k | | 2023 |
| l | | Data refers to a 5-year period preceding the reference year. |
| m | | Calculated by the UN Statistics Division. |
| n | | Including refugees. |
| o | | Data based on calendar year (January 1 to December 31). |
| p | | Last available data reported by the country using Government reports and national accounts data. |
| q | | Data are based on SHA2011. |
| r | | 2021 |
| s | | 2018 |
| t | | Data are as at 1 January of reporting year. |
| u | | Population aged 10 years and over. |
| v | | Break in the time series. |