The Highlands and Islands is an area of Scotland broadly covering the Scottish Highlands, plus Orkney, Shetland, and the Outer Hebrides.
The Highlands and Islands are sometimes defined as the area to which the Crofters' Act of 1886 applied. This area consisted of eight counties of Scotland:
Argyll
Caithness
Inverness
Nairn
Orkney
Ross and Cromarty
Shetland
Sutherland From Wikipedia