Key:boundary

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Public-images-osm logo.svg boundary
728px-NicholasCountySignWV.jpg
Description
The boundary tag is used to mark the borders of areas, mostly political, but possibly also of other administrative areas. Edit
Group: Boundaries
Used on these elements
should not be used on nodesmay be used on waysmay be used on areasmay be used on relations
Documented values: 21
Useful combination
Wikidata
Status: de facto

Usage

See also Boundaries

Boundaries mark the borders of areas, mostly political, but also of other administrative areas. See Boundaries for more details.

Values

See below for the main values of the boundary key:



Key Value Element Comment Rendering example Photo
boundary aboriginal_lands area A boundary representing official reservation boundaries of recognized aboriginal / indigenous / native peoples.
Entering Hualapai Indian Reservation.jpg
boundary administrative area 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.
Rendering-adminlevel 2-mapnik.png
Lake city sign.jpg
boundary historic way area 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 maritime area Maritime boundaries
boundary marker node 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 marker - Jeseniky, Czech Republic 12.jpg
boundary user defined node way All commonly used values according to Taginfo
boundary national_park area Area of outstanding natural beauty, set aside for conservation and for recreation (Other languages).
Natianal park.png
Kings Canyon NP Sign.JPG
boundary political area Electoral boundaries
boundary postal_code area Postal code boundaries
boundary protected_area area Protected areas, such as for national parks, marine protection areas, heritage sites, wilderness, cultural assets and similar.
boundary religious_administration area An religious administrative boundary. Requires an additional admin_level=*. See: Talk:Key:boundary#Religious authority boundaries.

Attributes

admin_level (number) area 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 * way area 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) area 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) area 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 way 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.


See also

Relation:boundary for boundary relations.