????-2019[]
On 1 January 2019, Leek was merged with Grootegast, Marum, Zuidhorn and parts of Winsum to form Westerkwartier.
Eemsdelta | Groningen | Het Hogeland | Midden-Groningen | Oldambt | Pekela | Stadskanaal | Veendam | Westerkwartier | Westerwolde
Former: (2000–2021) |