????-2017[]
The municipality became operational from January 2018, with the merger of Hoogezand-Sappemeer, Slochteren, and Menterwolde.
2017-present[]
Eemsdelta | Groningen | Het Hogeland | Midden-Groningen | Oldambt | Pekela | Stadskanaal | Veendam | Westerkwartier | Westerwolde
Former: (2000–2021) |