This is a list of postcodes in the SN42 area covering the areas of Non-geographic, Swindon (no longer in use).
| Postcode | Latitude | Longitude | Easting | Northing | Grid reference | Active? |
|---|---|---|---|---|---|---|
| SN42 7AL | 0 | 0 | 0 | 0 | No | |
| SN42 7AN | 0 | 0 | 0 | 0 | No | |
| SN42 7AS | 0 | 0 | 0 | 0 | No | |
| SN42 7BD | 0 | 0 | 0 | 0 | No | |
| SN42 7BX | 0 | 0 | 0 | 0 | No | |
| SN42 7DH | 0 | 0 | 0 | 0 | No | |
| SN42 7EU | 0 | 0 | 0 | 0 | No | |
| SN42 7HA | 0 | 0 | 0 | 0 | No | |
| SN42 7HD | 0 | 0 | 0 | 0 | No | |
| SN42 7JS | 0 | 0 | 0 | 0 | No | |
| SN42 7LA | 0 | 0 | 0 | 0 | No | |
| SN42 7LX | 0 | 0 | 0 | 0 | No | |
| SN42 7NA | 0 | 0 | 0 | 0 | No | |
| SN42 7PW | 0 | 0 | 0 | 0 | No | |
| SN42 7RL | 0 | 0 | 0 | 0 | No | |
| SN42 7RY | 0 | 0 | 0 | 0 | No | |
| SN42 7SJ | 0 | 0 | 0 | 0 | No | |
| SN42 7UE | 0 | 0 | 0 | 0 | No | |
| SN42 7WP | 0 | 0 | 0 | 0 | No | |
| SN42 7XB | 0 | 0 | 0 | 0 | No | |
| SN42 7XL | 0 | 0 | 0 | 0 | No | |
| SN42 7YR | 0 | 0 | 0 | 0 | No |