S1 — 8 codes dans 21 localités (Royaume-Uni).
| Code postal | Localité / Quartier | Zone administrative | Coordonnées |
|---|---|---|---|
| Sheffield | South Yorkshire · England | 53.383, -1.4659 | |
| Fulwood | South Yorkshire · England | 53.35, -1.55 | |
| Sheffield | South Yorkshire · England | 53.3608, -1.5084 | |
| Gleadless | South Yorkshire · England | 53.3485, -1.4068 | |
| Hackenthorpe | South Yorkshire · England | 53.3485, -1.4068 | |
| Highlane | South Yorkshire · England | 53.3485, -1.4068 | |
| Intake | South Yorkshire · England | 53.3485, -1.4068 | |
| Ridgeway | South Yorkshire · England | 53.3485, -1.4068 | |
| Handsworth | South Yorkshire · England | 53.3708, -1.3762 | |
| Woodhouse | South Yorkshire · England | 53.3576, -1.3728 | |
| Sheffield | South Yorkshire · England | 53.3462, -1.4445 | |
| Dore | South Yorkshire · England | 53.3269, -1.5403 | |
| Totley | South Yorkshire · England | 53.3141, -1.5408 | |
| Apperknowle | Derbyshire · England | 53.2995, -1.474 | |
| Barlow | Derbyshire · England | 53.2667, -1.4833 | |
| Coal Aston | Derbyshire · England | 53.2995, -1.474 | |
| Common Side | Derbyshire · England | 53.2995, -1.474 | |
| Dronfield | Derbyshire · England | 53.3022, -1.4751 | |
| Dronfield Woodhouse | Derbyshire · England | 53.2995, -1.474 | |
| Holmesfield | Derbyshire · England | 53.2954, -1.5176 | |
| Lidgate | Derbyshire · England | 53.2995, -1.474 | |
| Stubley | Derbyshire · England | 53.2995, -1.474 | |
| Unstone | Derbyshire · England | 53.2905, -1.442 |