Cantonal and municipal boundaries
The cantons are responsible for cantonal and municipal boundaries. swisstopo manages a data set of all of these boundaries which is updated annually and issued for free.
Federal Office of Topography swisstopo
Division Geodesy and Federal Directorate of Cadastral Surveying
Seftigenstrasse 264
3084 Wabern
Seftigenstrasse 264
3084 Wabern