The Bachmann Surname was registered in the following communities:

Amden - prior to 1800

Brunnadern - after 1901

Bütschwil - after 1901

Gossau - after 1901

Marbach - after 1901

Niederhelfenschwil - after 1901

Quarten - prior to 1800

St. Gallen - Prior to 1800

Thal - during the 1800's

Wattwil - after 1901