CF3 6YQ is located in the Pontprennau and Old St Mellons electoral ward, within the unitary authority of Cardiff and the Welsh Parliamentary constituency of Cardiff North. The Local Health Board is Cardiff and Vale University and the police force is South Wales. This postcode has been in use since June 2018.


| Easting | 322347 |
| Northing | 182787 |
| Latitude | 51.538622 |
| Longitude | -3.121046 |
| Country | Wales |
| Postcode District | CF3 |
| Ward | Pontprennau And Old St Mellons |
|---|---|
| Constituency | Cardiff North |
2023 15 FEB £327,500 |
24, LEWIS CRESCENT, OLD ST MELLONS, CARDIFF, CF3 6YQ 2021 13 SEP £342,495 |
22, LEWIS CRESCENT, OLD ST MELLONS, CARDIFF, CF3 6YQ 2021 21 MAY £332,995 |
26, LEWIS CRESCENT, OLD ST MELLONS, CARDIFF, CF3 6YQ 2021 14 MAY £289,995 |
30, LEWIS CRESCENT, OLD ST MELLONS, CARDIFF, CF3 6YQ 2021 26 MAR £329,995 |
28, LEWIS CRESCENT, OLD ST MELLONS, CARDIFF, CF3 6YQ 2021 12 MAR £334,995 |
2020 17 DEC £254,995 |
2, LEWIS CRESCENT, OLD ST MELLONS, CARDIFF, CF3 6YQ 2020 16 DEC £258,995 |
| Asda (Heol Pontprennau) | Pontprennau | 734m |
| Asda (Heol Pontprennau) | Pontprennau | 765m |
| Heol Pontprennau | Pontprennau | 815m |
| Cardiff Gate (Malthouse Avenue) | Pontprennau | 821m |
| Cardiff Gate (Malthouse Avenue) | Pontprennau | 830m |
| Llanishen Station | 4.3km |
| Lisvane & Thornhill Station | 4.5km |
| Heath High Level Station | 4.9km |



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| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Ball Road | 17:15 | 11:00 | 1,808m |
| Coed Y Gores | 17:30 | 11:45 | 2,282m |
| Willowbrook Drive | 17:00 | 11:15 | 2,291m |
The below table lists the International Territorial Level (ITL) codes (formerly Nomenclature of Territorial Units for Statistics (NUTS) codes) and Local Administrative Units (LAU) codes for CF3 6YQ:
| ITL 1 Code | Name |
|---|---|
| TLL | Wales |
| ITL 2 Code | Name |
| TLL2 | East Wales |
| ITL 3 Code | Name |
| TLL22 | Cardiff and Vale of Glamorgan |
| LAU 1 Code | Name |
| W06000015 | Cardiff |
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for CF3 6YQ:
| Code | Name | |
|---|---|---|
| OA | W00009478 | |
| LSOA | W01001843 | Cardiff 003C |
| MSOA | W02000369 | Cardiff 003 |
| CF3 6YJ | 321m | |
| CF3 6YA | Church Road | 669m |
| CF3 6XJ | Began Road | 720m |
| CF3 6UY | Bridge Road | 771m |
| CF23 8NZ | Lascelles Drive | 773m |
| CF23 8PA | Greenacre Drive | 787m |
| CF23 8PN | Highbank | 801m |
| CF23 8NU | Lascelles Drive | 828m |
| CF23 8NS | Burwell Close | 842m |
| CF23 8PB | Gateside Close | 847m |