 It is found on "Bundesstraße" 38 and through it flow the Weschnitz and the community’s namesake, the Mörlenbach.→ Odenwald#Geology

Mörlenbach borders in the north on the community of Rimbach, in the east on the communities of Wald-Michelbach and Abtsteinach, in the south on the community of Birkenau, in the west on the town of Hemsbach and the community of Laudenbach (both in the Rhein-Neckar-Kreis in Baden-Württemberg), and in the northwest on the town of Heppenheim.Mörlenbach’s "Ortsteile" are Mörlenbach-Mitte, Weiher, Bonsweiher, Ober-Mumbach, Kleinbreitenbach, Großbreitenbach, Vöckelsbach, Ober-Liebersbach, Geisenbach, Rohrbach, Bettenbach and Juhöhe.