Böztal

Hornussen is a former municipality in the district of Laufenburg in the canton of Aargau in Switzerland. On 1 January 2022 the former municipalities of Bözen, Effingen, Elfingen and Hornussen merged into the new municipality of Böztal.

The Fricktal ("Frick Valley") is a region on Northwestern Switzerland, comprising the Laufenburg and Rheinfelden districts of the Swiss canton of Aargau. The region was known as Frickgau in the medieval period, ultimately from a Late Latin [regio] ferraricia, in reference to the iron mine located here in the Roman era, also transferred to the village of Frick as the main settlement.Frickgau was part of Breisgau within Further Austria in the early modern period. It was joined to Switzerland only during the Napoleonic period. It now forms a northwestern extension to the canton of Aargau to the east of Basel, between the High Rhine forming the border with Germany in the north and the Jura Mountains in the south.

Ittenthal was a municipality in the district of Laufenburg in the canton of Aargau in Switzerland. On 1 January 2010, Ittenthal merged into the municipality of Kaisten.The historical population is given in the following table:

Bözen (Swiss German: ˈbøːtsə) is a village in the Swiss canton of Aargau. It lies to the west of the Bözberg in the upper Frick valley. Until December 31, 2021, Bözen was an independent municipality in the district of Brugg, since then it has been one of four villages in the newly created municipality of Böztal in the district of Laufenburg.

Ueken is a former municipality in the district of Laufenburg in the canton of Aargau in Switzerland. On 1 January 2023 the former municipalities of Herznach and Ueken merged to form the new municipality of Herznach-Ueken.

Herznach is a former municipality in the district of Laufenburg in the canton of Aargau in Switzerland. On 1 January 2023 the former municipalities of Herznach and Ueken merged to form the new municipality of Herznach-Ueken.

Zeihen is a municipality in the district of Laufenburg in the canton of Aargau in Switzerland.

Herznach-Ueken is a municipality in the district of Laufenburg in the canton of Aargau in Switzerland. It was established on 1 January 2023 with the merger of the municipalities of Herznach and Ueken.

Kaisten is a municipality in the district of Laufenburg in the canton of Aargau in Switzerland. On 1 January 2010 the municipality of Ittenthal merged into the municipality of Kaisten.

Effingen is a former municipality in the district of Brugg in canton of Aargau in Switzerland. On 1 January 2022 the former municipalities of Bözen, Effingen, Elfingen and Hornussen merged into the new municipality of Böztal.

Elfingen is a former municipality in the district of Brugg in canton of Aargau in Switzerland. On 1 January 2022 the former municipalities of Bözen, Effingen, Elfingen and Hornussen merged into the new municipality of Böztal.

Oeschgen is a municipality in the district of Laufenburg in the canton of Aargau in Switzerland.