ISO 3166-2:DK is the entry for Denmark in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1.
The current version of the standard defines codes for the five regions of Denmark created during the municipal reform of 2007.[1]
Each code consists of two parts, separated by a hyphen. The first part is DK, the ISO 3166-1 alpha-2 code for Denmark. The second part is a two-digit number between 81 and 85.