By the 1950s it was part of the agglomeration of Bern and the population increased rapidly.

However, it remains part of the urban agglomeration of Longueuil.

The following towns are commonly recognized as part of the agglomeration:

The regional unit covers the central part of the agglomeration of Athens.

The region around Nyon is often considered part of the agglomeration of Geneva.

Since the 1970s it has been part of the agglomeration of Lausanne.

The regional unit covers the eastern part of the agglomeration of Athens, and also the rural area to its east.

However, they remain part of the urban agglomeration of Montreal.

The regional unit covers the western part of the agglomeration of Athens, and the area to its west.

Today, it is part of the agglomeration of Basel.