Sectors in SW1X
| Sector | Main place | Postcodes |
|---|---|---|
| SW1X 0 | Chelsea | 78 |
| SW1X 7 | City of Westminster | 87 |
| SW1X 8 | City of Westminster | 124 |
| SW1X 9 | Chelsea | 113 |
Places covered by SW1X
- City of Westminster Westminster · 208
- Chelsea Kensington and Chelsea · 190
- London Camden · 2