Sectors in SO23
| Sector | Main place | Postcodes |
|---|---|---|
| SO23 0 | Winchester | 131 |
| SO23 3 | Winchester | 68 |
| SO23 5 | Winchester | 21 |
| SO23 7 | Winchester | 277 |
| SO23 8 | Winchester | 120 |
| SO23 9 | Winchester | 195 |
Places covered by SO23
- Winchester Winchester · 676
- Springvale Winchester · 80
- Kings Worthy Winchester · 24
- Headbourne Worthy Winchester · 23
- Abbots Worthy Winchester · 1