 The neighbouring community of Streitwald was incorporated into the town in 1973, followed by Greifenhain in 1995, Benndorf in 1997, and Eschefeld, Frauendorf, Roda, Nenkersdorf and Schönau in 1999.On 1 January 2008 Frohburg and the community of Eulatal formed an administrative collectivity which ended a year later when Eulatal joined the community of Frohburg.The town of Kohren-Sahlis was incorporated into the town in 2018.