Malborn lies at the foot of the Steinkopf (683 m above sea level), on which stood a lookout tower until 2018.

Near Malborn rises the river Prims, which is dammed up in the Primstalsperre (reservoir), and which empties into the Saar near Dillingen.

The municipal election held on 7 June 2009 yielded the following results:[3] The municipality's arms might be described thus: Tierced in mantle, dexter vert three fir trees Or, sinister vert three ears of wheat banded in base and couped of the second, and the base chequy argent and gules, in a chief of the third a cross of the last.

The tinctures argent and gules (silver and red) recall two of the municipality's historical allegiances: the cross in the chief is a reference to the villages’ former allegiance to the Electorate of Trier, while the “chequy” pattern refers to the Counts of Sponheim.

The fields in the tinctures vert and Or (green and gold) refer to the municipality's historical livelihood in forestry, with its considerable woodlands symbolized on the dexter (armsbearer's right, viewer's left) side by the three stylized trees, and agriculture, symbolized on the sinister (armsbearer's left, viewer's right) side by the three ears of wheat.