Hainburg is a municipality of just under 14,400 inhabitants in the Offenbach district in the Regierungsbezirk of Darmstadt in Hesse, Germany. Geography Location Hainburg is one of 13 towns and communities in the Offenbach district. The town lies at the edge of the Frankfurt Rhine Main Region on the bank of the Main. It lies east of Frankfurt am Main. In the north is found the town of Hanau (Main-Kinzig-Kreis). Hainburg lies in the southern part of Hesse and borders in the east on the state of Bavaria. Neighbouring communities Hainburg borders in the north on the town of Hanau and the community of Großkrotzenburg (both in the Main-Kinzig-Kreis), in the east on the communities of Kahl and Karlstein (both in the Aschaffenburg district in Bavaria), in the south on the town of Seligenstadt and in the west on the towns of Rodgau and Obertshausen. Municipal area’s extent The municipal area stretches over just under 16 km². Hainburg am Main is, with regards to transport, well linked to the surrounding towns and communities. Constituent communities Hainburg's two Ortsteile are Hainstadt and Klein-Krotzenburg, with the latter's population being about 2,000 fewer than the former's. History Hainstadt Near Hainstadt are preserved the remains of a Roman settlement. It is, however, questionable whether there was continuous settlement here between the time when this was built and the 12th century, when Hainstadt had its first documentary mention. When Gottfried of Eppstein sold Electoral Mainz the Amt of Steinheim with all the places belonging thereto in 1425, the Electors and Archbishops of Mainz took over as the new landlords. In 1532, the compulsory labour that Hainstadt people would ordinarily have to have done was cast aside in favour of payments in money. When the Auheimer Mark (an old cadastral unit) was partitioned in 1786, Hainstadt was given part of the Markwald (common forest). After Electoral Mainz's Secularization, the Oberamt of Steinheim passed in 1803 to the Landgraviate of Hesse-Darmstadt. In 1882, the Hanau-Eberbach railway with a railway station in Hainstadt was opened. On 1 January 1977, in the course of municipal reform in Hesse, Hainstadt was merged with the neighbouring community of Klein-Krotzenburg under the name Hainburg. Klein-Krotzenburg Cutzenburch had its first documentary mention in 1175 in a legal battle between the Seligenstadt Abbey and Saint Peter's Monastery in Mainz. The Seligenstadt Abbey at this time had extensive landholdings in Krotzenburg. Already by this time,