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

During the Middle Ages, Gallenkirch was part of the district of Hornussen under the city of Bad Säckingen.

However, since 1917, children attend the local school in Linn, and other infrastructure problems are solved through inter-municipal cooperation.

[8] The former municipalities that now make up Bözberg have a total combined area of 15.5 km2 (5.98 sq mi).

[10] The former municipality is located west of the mountain pass through which the modern Bözbergstrasse runs.

[10] The former municipality is located on a plateau of the Bözberg and south-west of the pass over the mountain.

Of the rest of the land, 0.26 square kilometers (0.10 sq mi) or 4.8% is settled (buildings or roads), 0.02 km2 (4.9 acres) or 0.4% is either rivers or lakes.

[10] The former municipality consists of the linear village of Oberbözberg and the hamlet of Ueberthal as well as scattered farms.

Of the rest of the land, 0.59 square kilometers (0.23 sq mi) or 9.6% is settled (buildings or roads).

The wettest month is June during which time Unterbözberg receives an average of 116 mm (4.6 in) of rain or snow.

The driest month of the year is October with an average of 77 mm (3.0 in) of precipitation over 11.9 days.