Aichtal is situated at the southern edge of the Filder plain in the valley of the Aich, a left tributary of the Neckar. It is separated from the Neckar valley by the ridges of Galgenberg, Kleinbergle and Schaichberg. The district Neuenhaus, situated in the angle of the valley fork formed by Aich and Schaich, belongs mostly to the Naturpark Schönbuch. The tuberous marl slopes of the Aich valley are covered with meadows and fruit orchards. The town area extends from 295 meters above sea level at the Grötzingen sewage plant to 498 meters above sea level on the Betzenberg in the Schönbuch.