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-Eberbachrailway 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
Klein-Krotzenburg's coat of arms
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, the Prince-Elector-Archbishop of Mainz was the landlord in Klein-Krotzenburg.
During the Thirty Years' War, the populace suffered mightily. In 1632 alone, 90 inhabitants died of the Plague. By the war's end, everyone had fled the village.
In 1736, a chapel was built on the Liebfrauenheide (heath), which soon became a pilgrimage site. After Electoral Mainz's Secularization, the Oberamt of Steinheim passed in 1803 to the Landgraviate of Hesse-Darmstadt, bringing Klein-Krotzenburg with it.
On 1 January 1977, in the course of municipal reform in Hesse, Klein-Krotzenburg was merged with the neighbouring community of Hainstadt under the name Hainburg.
Politics
Community council
This section needs to be updated. Please help update this article to reflect recent events or newly available information. (July 2021)
The municipal election held on 26 March 2006 yielded the following results:
The current mayor, Bernhard Bessel (CDU), who has been in office since 1993, was reëlected on 12 September 2004 for a third term on the first vote with 64.8% of the ballots cast. Voter turnout was 59.1%.
In 1975, the community took on the sponsorship for Sudeten Germans driven out of the communities of Peterswald (now Petrovice u Chabařovic) and Nollendorf (now Nakléřov) in the Aussig district.
Transport
The constituent community of Hainstadt lies on the Odenwaldbahn (railway; RMV Line 65), which links the community to Hanau, Frankfurt, Wiebelsbach-Heubach and Erbach.
Towards the west runs the Offenbacher Landstraße or Landesstraße 3416 to Bundesstraße 45 and the A 3. Northwards, Landesstraße 3065 goes towards Hanau, and southwards towards Seligenstadt.
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