Olrig

Achingills (Gaelic: ) is a small hamlet in Halkirk, Caithness within Highland region and is in the Scottish council area of the Highland. Scotland. Achingills Farm is home to the Williamson family who have farmed it since 1988.

Murkle (Murchill) is a small scattered hamlet, made up of East Murkle and West Murkle located one mile (1.6 km) east of Thurso, in Caithness, Scottish Highlands and is in the Scottish council area of Highland.

Sordale is a small linear village, located 1.5 miles (2.4 km) northeast in Halkirk, in Caithness, Scottish Highlands and is in the Scottish council area of Highland. The small hamlet of Shalmstry can be found to the north of the village.

Roadside is a small village, located at the junction of the A9 trunk road and the B874, 1 mile south of Sordale in Caithness, Scottish Highlands and is in the Scottish council area of Highland.

Georgemas is an area in the county of Caithness, in the Highland area of Scotland, about 8 kilometres (5.0 mi) south of the town of Thurso and about two kilometres (one mile) east of the village of Halkirk. The area is served also by the A9, A882 and B874 roads. The A9 has a junction with the A882 in the area and forms a crossroads with the B874. The name Georgemas is that of a now historic St George's Day agricultural fair which was held in the area, on Sordale Hill. Georgemas Junction, the station name, dates from 1874.

Haimer is a small hamlet in Caithness, Scotland. It is located on a road just off the A836 and consists of several small settlements and farming facilities. Thurso is quite close by, being about a mile away to the west and the suburb of Mount Pleasant is just a short distance away. There are several public facilities including a hotel as part of the settlement and a supermarket in Mount Pleasant.

Hoy was a railway station located northeast of Halkirk, Highland.

Georgemas Junction railway station is a railway station located in the Highland council area in the far north of Scotland. It serves several rural hamlets in the historic county of Caithness, including Georgemas, Roadside and Banniskirk. It is also the nearest station to the village of Halkirk, which lies approximately 1.6 miles (2.6 km) west of the station. Georgemas Junction is the penultimate station on the Far North Line from Inverness to Wick, 147 miles 22 chains (237 km) down the line from Inverness. Immediately to the west of the station lies a junction of the same name, where the branch to Thurso spurs off northwards; mileages on this branch are measured from the station. This junction is the northernmost railway junction in the United Kingdom. The station has a single platform which is long enough to accommodate a six-carriage train. The station is managed by ScotRail, who operate the services at the station.

Castletown (Scottish Gaelic: Baile a' Chaisteil) is a village on the north coast of the Highland council area of Scotland, situated near Dunnet Bay. It is within the civil parish of Olrig, where it is the main settlement, and within the historic county of Caithness. The A836 links the village with Thurso and Tongue in the west and with John o' Groats in the east. The B876-A99 links the village with Wick in the southeast. Contrary to the common misconception, the name Castletown is a misnomer as there is no castle within the village limits. Much of the village is built on the old townland (or fermland) of Stanergill. The Stanergill Burn was the eastern boundary of the townland. It flows now through the eastern end of the village and so into Dunnet Bay and the Atlantic Ocean. The name Stanergill can be read as meaning Stone Valley and much of Castletown was built during the 19th century boom years of Caithness as a source of flagstone. Much of the stone was processed in the harbour area of the village, known as Castlehill, and many of the streets of London, Sydney, Edinburgh and the financial district of New York City are paved with it. The harbour was built by James Bremner. Castletown's main building is the 'Drill Hall'. This is mainly used for parties, discos and small clubs such as the indoor bowls. The building that was used for these functions was the 'Traill Hall', a gift to the Village by the Traill family, owners of the flagstone quarry at Castlehill. Traill House, a large and imposing country home was the residence of the Traill family. It was located in the woods at Castlehill, in later years it was owned by the Crumb-Ewing family, it became derelict after WW2 and burned down in the late 1950s. The remains of the gatehouse can be seen on the side of the A836 at Castlehill plantation. Industry in the village included manufacture of domestic food storage freezers, under the Norfrost brand. However, the company closed in 2013; Ebac in County Durham now produce the freezers.

Shalmstry is a small settlement in Caithness, Scotland. It is just under 3 miles (5 kilometres) south of Thurso. It is located off the A9 and is remote. The settlements of Weydale and Sordale can be found to the south and Thurso to the north via the A9.

Weydale (Scottish Gaelic: valley of the way) is a remote scattered crofting settlement, lying 3 miles southeast of Thurso, Caithness, Scottish Highlands and is in the Scottish council area of Highland.

Braal Castle is located by the River Thurso north of the village of Halkirk, in Caithness, northern Scotland. The ruined castle, which dates back to the mid-14th century, was originally known as the Castle of Brathwell.