[4] The municipality (Gemeinde) of Mönsheim covers 16.78 square kilometers (6.48 sq mi) of the Enz district, within the state of Baden-Württemberg, in the Federal Republic of Germany.

The Heckengäu's table-like, karstified and forested muschelkalk hills describe much of Mönsheim's geography.

The Grenzbach, a tributary of the Enz, is the main watercourse and marks its lowest elevation above sea level, 314 meters (1,030 ft) Normalnull (NN) at the border with Wiernsheim.

[3] Population development:[5] Mönsheim's municipal coat of arms shows a white, crenelated tower with a pointed roof on a green three-crested hill upon a field of red.

This pattern was created in 1930 on the advice of the Central State Archive Stuttgart [de] and was informed by the earliest town coat of arms, dated to 1598.