Elfingen

Sulz was a municipality in the district of Laufenburg in the canton of Aargau in Switzerland. The late Roman watchtower in Rheinsulz is listed as a heritage site of national significance. On 1 January 2010 the municipality of Sulz merged into Laufenburg.

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.

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.

Aargau Jura Park (Jurapark Aargau) is located north of Aarau, between the rivers Aare and Rhine, in the Swiss canton of Aargau. It straddles the border between Jura and Basel. It spans 241 square kilometres (93 sq mi) and reaches up to 350 metres (1,150 ft) above the valley floor. The park is mainly located on the Jurassic Plateau, between Frick and Villigen, and also encompasses the Aargau Jura mountains and valleys. The northern area includes sparse pine forests, fruit orchards, rocky steppes, dry meadows and terraced vineyards, while the southern region fosters forests and wildlife. It was declared a regional nature park of national importance in 2012 by the Federal Office for the Environment. The villages Herznach and Wölfinswil traditionally mined ore in the park and thus, left many studs. A mining tunnel was excavated and made accessible to visitors.

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:

Mönthal is a municipality in the district of Brugg in canton of Aargau in Switzerland.

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

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.

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

Böztal is a municipality in the district of Laufenburg in the canton of Aargau in Switzerland. It was established on 1 January 2022 with the merger of the municipalities of Bözen, Effingen, Elfingen and Hornussen.

Oberhofen was a municipality in the district of Laufenburg in the canton of Aargau in Switzerland. On 1 January 2010 the municipalities of Hottwil, Etzgen, Mettau, Oberhofen and Wil merged into the municipality of Mettauertal.

Gallenkirch is a former municipality in the district of Brugg in canton of Aargau in Switzerland. On 1 January 2013 the former municipalities of Gallenkirch, Linn, Oberbözberg and Unterbözberg merged to form the new municipality of Bözberg.