Eschenburg borders in the north on the communities of Dietzhölztal (Lahn-Dill-Kreis) and Breidenbach, in the east on the communities of Steffenberg and Angelburg (all three in Marburg-Biedenkopf), in the south on the community of Siegbach, in the southwest on the town of Dillenburg, and in the west on the town of Haiger (all in the Lahn-Dill-Kreis).
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It serves as a centre point in the middle Dietzhölze Valley, is the administrative seat, and is the centre for secondary education with Haupt- and Realschule, and a gymnasial branch for ten villages in the communities of Eschenburg and Dietzhölztal.
To the North Haiger borders with the town of Netphen (Siegen-Wittgenstein in North Rhine-Westphalia) and the community of Dietzhölztal, to the east with the community of Eschenburg and the town of Dillenburg, to the south with the community of Breitscheid (all in the Lahn-Dill-Kreis), and to the west with the communities of Burbach and Wilnsdorf (both in the Siegen-Wittgenstein district of North Rhine-Westphalia).