KML is from Wikidata The KW postcode area, or Kirkwall postcode area, is a group of sixteen postcode districts in the far north of Scotland, within fifteen post towns. These cover Caithness (including Wick, Thurso, Halkirk, Berriedale, Dunbeath, Latheron and Lybster), east Sutherland (including Golspie, Brora, Helmsdale, Kinbrace and Forsinard) and the Orkney Islands.