- in Germany – districts (Landkreise) of Mecklenburg-Vorpommern: Nordwestmecklenburg, Rostock, Vorpommern-Rügen, Vorpommern-Greifswald and district-free city (kreisfreie Stadt): Rostock;
- in Denmark – Regional Municipality of Bornholm and Region Zealand (subregions: Østsjælland, Vest- og Sydsjælland);
- in Lithuania – counties of Klaipėda, Tauragė and Telšiai;
- in Poland – subregions of: Miasto Szczecin, Szczeciński, Szczecinecko-pyrzycki, Koszaliński, Słupski, Starogardzki, Chojnicki, Gdański, Trójmiejski and Elbląski;
- in Sweden – counties of: Kalmar, Blekinge, Skåne and Kronoberg;