|The boundary tag is used to mark the borders of areas, mostly political, but possibly also of other administrative areas.|
|Used on these elements|
|Documented values: 21|
|Status: de facto|
|Tools for this tag|
- See also Boundaries
Boundaries mark the borders of areas, mostly political, but also of other administrative areas. See Boundaries for more details.
See below for the main values of the boundary key:
|boundary||aboriginal_lands||A boundary representing official reservation boundaries of recognized aboriginal / indigenous / native peoples.|
|boundary||administrative||An administrative boundary. Subdivisions of areas/territories/jurisdictions recognised by governments or other organisations for administrative purposes. These range from large groups of nation states right down to small administrative districts and suburbs, as indicated by the 'admin_level=*' combo tag. It is possible for there to be aboriginal_lands "inside" of these, defying a sort of geographical logic. One way to describe this (as in the USA) is that aboriginal_lands have "parallel sovereignty" with their enclosing (usually national, sometimes state) administrative boundary.|
|boundary||historic||Historic administrative boundaries, temporarily kept in OSM, along with start_date=* and end_date=* to specify dates of effect. Requires an additional admin_level=*.|
|boundary||marker||A boundary marker, border marker, boundary stone, or border stone is a robust physical marker that identifies the start of a land boundary or the change in a boundary, especially a change in direction of a boundary. See: Tag:boundary=marker and also Talk on OSM forum|
|boundary||national_park||Area of outstanding natural beauty, set aside for conservation and for recreation (Other languages).|
|boundary||postal_code||Postal code boundaries|
|boundary||protected_area||Protected areas, such as for national parks, marine protection areas, heritage sites, wilderness, cultural assets and similar.|
|boundary||religious_administration||An religious administrative boundary. Requires an additional admin_level=*. See: Talk:Key:boundary#Religious authority boundaries.|
|boundary||user defined||All commonly used values according to Taginfo|
|admin_level||(number)||Applies to boundary=administrative and is usually in the range 1 to 10, except for several countries (Bolivia, Germany, Mozambique, Netherlands, Philippines, Poland, Turkmenistan, Venezuela) where it is in the range 1 to 11 – see boundary.|
|border_type||*||To distinguish between types of boundary where admin_level isn't enough. Used in several different ways e.g in maritime contexts.|
|start_date||(date)||Useful if there are competing historic boundaries or the boundary is very recent (or if it will become effective in a near future) and if keeping previous boundaries are still needed separately (including for statistical maps that are based on older boundaries).|
|end_date||(date)||Should be specified for all historic boundaries, or boundaries that will soon become ineffective (and possibly replaced by others) e.g. for administrative territorial subdivision reforms.|
|fire_boundary||yes||Tag fire_boundary used to mark the boundaries of the areas of fire brigades out within the project Karta01.|
This table is a wiki template with a default description in English. Editable here.
Relation:boundary for boundary relations.