| a | | For statistical purposes, the data for Denmark do not include Faroe Islands, and Greenland. |
| b | | Projected estimate (medium fertility variant). |
| c | | Excluding Faeroe Islands and Greenland shown separately, if available. |
| d | | 2022 |
| e | | Refers to the Greater Copenhagen Region, consisting of (parts of) 16 municipalities. |
| f | | 2019 |
| g | | 2023 |
| h | | Data classified according to ISIC Rev. 4. |
| i | | Excludes irrigation canals and landscaping care. |
| j | | Excludes publishing activities. Includes irrigation canals. |
| k | | Includes publishing activities and landscape care. Excludes repair of personal and household goods. |
| l | | Estimate. |
| m | | Calculated by the UN Statistics Division from national indices. |
| n | | Data refers to a 5-year period preceding the reference year. |
| o | | Calculated by the UN Statistics Division. |
| p | | Data are as at 1 January of reporting year. |
| q | | Users in the last 3 months. |
| r | | Population aged 16 to 74 years. |
| s | | Population aged 15 to 89 years. |
| t | | Provisional data. |
| u | | 2021 |
| v | | Excluding the Faroe Islands and Greenland. |
| w | | Break in the time series. |
| x | | Development Assistance Committee member (OECD). |