Zuzgen is a municipality in the Rheinfelden District of canton Aargau in Switzerland. It is located in the West of the Fricktal region, around three kilometers southwest of the border with Germany, and has a border with Canton Basel-Landschaft.

Hellikon is a municipality in the Rheinfelden district of canton Aargau in Switzerland. It is located in the West of the Fricktal region, around four kilometers Southwest of the border with Germany and has a border with Canton Basel-Landschaft.