 It is found on the southern edge of the Kellerwald-Edersee National Park on the upper reaches of the Lorfebach, a tributary to the Eder.Frankenau lies 10 km east of Frankenberg, and 33 km northeast of Marburg.Frankenau borders in the north on the community of Vöhl, in the east on the community of Edertal and the town of Bad Wildungen, in the south on the community of Haina, and in the west on the town of Frankenberg (all in Waldeck-Frankenberg).