Raunheim lies in the Frankfurt Rhein-Main Region between Frankfurt am Main (24 km southwest of downtown) and Mainz on the south bank of the Main, 3 km northeast of Rüsselsheim.

of Katzenelnbogen bought the villages Seilfurt und Raunheim for 5000 florin from the Lords of Eppstein.

According to census data from that year Raunheim and Dietzenbach also had the highest shares of Muslim migrants in Hesse and Germany.

[1] Raunheim maintains partnership links with the following towns: The town's advantageous location on the Main and near the airport and Autobahn led to quick growth after the Second World War (1945 population: 3,600) and to its becoming an important industrial location.

With the city being on the airport approach, with certain wind conditions (officially: operational direction 07), the approaching aircraft fly about 300 m over the town, reaching a noise level of 70 dB, peaking at 90 dB, making Raunheim the airport area community most strongly affected by aircraft noise.