|• Mayor||Ralf Kierspel (CDU)|
|• Total||6.96 km2 (2.69 sq mi)|
|Elevation||271 m (889 ft)|
|• Density||162.07/km2 (419.8/sq mi)|
|Time zone||CET/CEST (UTC+1/+2)|
Aach has a council with sixteen seats. The last elections in 2004 brought the CDU twelve seats, the other four went to the free voters' association (FWG Aach e. V.) In the same elections Mayor Josef Klein (CDU) was voted into office with nearly 74% of the votes.