Offenbach Ost station is the second most important station after Offenbach Hauptbahnhof of Offenbach am Main in the German state of Hesse. Today it is served exclusively by the Rhine-Main S-Bahn. Although Offenbach Hauptbahnhof is served by some Regional-Express services and a few intercity services each day it is rated as a category 4 station, while Offenbach Ost station is now rated as a category 3 station.