Rhd-y-ceirw is located in the county of Clwyd, Wales, five miles south of the town of Mold, 12 miles south-west of the major city of Chester, 112 miles north of Cardiff, and 168 miles north-west of London. Rhd-y-ceirw was historically in the county of Flintshire. Rhd-y-ceirw falls within the unitary authority of Sir y Fflint - Flintshire. It is in the CH7 postcode district.


Rhd-y-ceirw is in the ceremonial county of Clwyd, the historic county of Flintshire, and the administrative county of Sir y Fflint - Flintshire.
| Ceremonial County | Clwyd |
|---|---|
| Historic County | Flintshire |
| Administrative County | Sir y Fflint - Flintshire |
Rhd-y-ceirw is situated roughly centrally between the southernmost and northernmost extremities of Clwyd, and towards the easternmost extremity of Clwyd.

The nearest postcode to the centre of Rhd-y-ceirw is CH7 4BP.
Rhd-y-ceirw is situated towards the southernmost extremity of the CH7 postcode district, and towards the easternmost extremity of the CH7 postcode district.

The centre of Rhd-y-ceirw is located at position 53.10109° latitude and -3.14476° longitude.
| Latitude | 53.10109° |
|---|---|
| Longitude | -3.14476° |
The centre of Rhd-y-ceirw is located at the grid reference easting 323451 and northing 356601 within the British National Grid (OSGB36) system.
| Easting | 323451 |
|---|---|
| Northing | 356601 |
Position of Rhd-y-ceirw relative to nearby towns. Distance is measured from the centre of Rhd-y-ceirw to the centre of the town.
Position of Rhd-y-ceirw relative to nearby cities. Distance is measured from the centre of Rhd-y-ceirw to the centre of the city.