There is one place named Karstø in Norway.
All places in the world called "Karstø".
Mo (13)Berg (11)Bø (11)Nes (11)Holmen (11)Sandnes (10)Haugen (10)Vik (10)Eide (10)Berge (10)Dale (9)Strand (9)Bakken (9)Breidvik (9)Sand (8)Lunde (8)Moen (8)Rød (8)Lund (8)Dalen (8)Sandvik (8)Åsen (8)Bjørnstad (7)Våge (7)Aasen (7)Sandvika (7)Haugland (7)Helle (7)Straumen (7)Leirvik (7)