This code system https://www.iso.org/obp/ui/#iso:code:3166:DK defines the following codes:
| Code | Display |
| DK-84 | Capital Region of Denmark |
| DK-82 | Central Denmark Region |
| DK-81 | Nord Denmark Region |
| DK-85 | Region Zealand |
| DK-83 | Region of Southern Denmark |
Additional Language Displays
| Code | Dansk (Danish, da) |
| DK-84 | Hovedstaden |
| DK-82 | Midtjylland |
| DK-81 | Nordjylland |
| DK-85 | Sjælland |
| DK-83 | Syddanmark |