Dreieich borders in the north on the town of Neu-Isenburg, in the northeast on the district-free city of Offenbach, in the east on the towns of Heusenstamm, Dietzenbach and Rödermark, in the south on the community of Messel (Darmstadt-Dieburg) and the district-free city of Darmstadt and in the southwest on the town of Langen. To the west lies Frankfurt Airport.