Preston-under-Scar is located in the county of North Yorkshire, Yorkshire and the Humber, three miles west of the town of Leyburn, 20 miles south-west of the major town of Darlington, 124 miles south-east of Edinburgh, 203 miles north of Cardiff, and 207 miles north of London. Preston-under-Scar was historically in the county of Yorkshire. Preston-under-Scar falls within the unitary authority of North Yorkshire. It is in the DL8 postcode district.


Preston-under-Scar is in the ceremonial county of North Yorkshire, the historic county of Yorkshire, and the administrative county of North Yorkshire.
| Ceremonial County | North Yorkshire |
|---|---|
| Historic County | Yorkshire |
| Administrative County | North Yorkshire |
Preston-under-Scar is situated towards the northernmost extremity of North Yorkshire, and towards the westernmost extremity of North Yorkshire.

The nearest postcode to the centre of Preston-under-Scar is DL8 4AJ.
Preston-under-Scar is situated towards the northernmost extremity of the DL8 postcode district, and roughly centrally between the easternmost and westernmost extremities of the DL8 postcode district.

The centre of Preston-under-Scar is located at position 54.31552° latitude and -1.89395° longitude.
| Latitude | 54.31552° |
|---|---|
| Longitude | -1.89395° |
The centre of Preston-under-Scar is located at the grid reference easting 406997 and northing 491109 within the British National Grid (OSGB36) system.
| Easting | 406997 |
|---|---|
| Northing | 491109 |
Position of Preston-under-Scar relative to nearby towns. Distance is measured from the centre of Preston-under-Scar to the centre of the town.
Position of Preston-under-Scar relative to nearby cities. Distance is measured from the centre of Preston-under-Scar to the centre of the city.