WikiProject Belgium/Boundaries

Get an overview of all current boundaries: http://tools.geofabrik.de/osmi/?view=boundaries

Get information about the key "boundary" and "admin_level": boundary=*, or at boundary conventions at the places conventions.

The boundaries are complete up to municipality level. Part-municipalities aren't mapped in most places, but could still be handy to search addresses.

When name=* is used on ways, in order to avoid writing things like Liège Liège Liège, the following is recommended:
Mun1 -- Mun2 ARR: Arr1 -- Arr2 PROV: prov1 -- prov2
The municipality names are separated with a double hyphen and the arrondissement and province names are prefixed with ARR: and PROV:. The former em dash character has been replaced with double hyphen to prevent a DWG vandalism removing them.

Country (Land / Pays / Land)

boundary=administrative
admin_level=2

Communities (Gemeenschappen / Communautés / Gemeinschaften)

boundary=political
political_division=linguistic_community

Note that the Belgian corridors of the Vennbahn, between the mainland of Germany and the German exclaves (within the German community or locked by this community and the French community, need to be checked to see which Belgian municipalies actually contain them. See the section of municipalities below to assert this.

Regions (Gewesten / Régions / Regionen)

boundary=administrative
admin_level=4

Provinces

boundary=administrative
admin_level=6

Arrondissements

boundary=administrative
admin_level=7

Municipalities and afdelingen / divisions (sorted by province)

boundary=administrative
admin_level=8 (municipality)
admin_level=9 (afdeling / division)