> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/areas-and-zones-portfolio/boundary-line/boundary-line-technical-specification/gml/code-lists-gml/administrativehierarchyvalue.md).

# AdministrativeHierarchyValue

Levels of administration in the national administrative hierarchy. This code list reflects the level in the hierarchical pyramid of the administrative structures, which is based on geometric aggregation of territories and does not necessarily describe the subordination between the related administrative authorities.

| Value    | Description                                                                                                |
| -------- | ---------------------------------------------------------------------------------------------------------- |
| 3rdOrder | Applies to Non-Metropolitan County, Greater London Authority, Metropolitan District and Unitary Authority. |
| 4thOrder | Applies to District and London Borough.                                                                    |
| 5thOrder | Applies to Civil Parish and Community.                                                                     |


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