Districts in the SO area
| District | Main place | Local authority | Sectors | Postcodes |
|---|---|---|---|---|
| SO14 | Southampton | Southampton | 7 | 852 |
| SO15 | Southampton | Southampton | 9 | 1,167 |
| SO16 | Southampton | Southampton | 9 | 1,542 |
| SO17 | Southampton | Southampton | 3 | 441 |
| SO18 | Southampton | Southampton | 7 | 940 |
| SO19 | Southampton | Southampton | 9 | 1,194 |
| SO20 | Broughton | Test Valley | 2 | 346 |
| SO21 | Colden Common | Winchester | 3 | 743 |
| SO22 | Winchester | Winchester | 3 | 747 |
| SO23 | Winchester | Winchester | 6 | 812 |
| SO24 | New Alresford | Winchester | 3 | 450 |
| SO25 | Winchester | Winchester | 1 | 1 |
| SO30 | Hedge End | Eastleigh | 5 | 825 |
| SO31 | Warsash | Fareham | 8 | 1,188 |
| SO32 | Bishop's Waltham | Winchester | 3 | 678 |
| SO40 | Totton | New Forest | 7 | 1,081 |
| SO41 | Lymington | New Forest | 7 | 1,080 |
| SO42 | Brockenhurst | New Forest | 1 | 164 |
| SO43 | Lyndhurst | New Forest | 1 | 137 |
| SO45 | Hythe | New Forest | 7 | 973 |
| SO50 | Eastleigh | Eastleigh | 7 | 1,320 |
| SO51 | Romsey | Test Valley | 7 | 881 |
| SO52 | North Baddesley | Test Valley | 1 | 186 |
| SO53 | Chandler's Ford | Eastleigh | 5 | 860 |
| SO97 | — | Eastleigh | 1 | 15 |
Main places in the SO area
- Southampton
- Winchester
- Eastleigh
- Chandler's Ford
- Totton
- Lymington
- Romsey
- Hedge End
- Hythe
- West End
- Warsash
- Bishop's Waltham
- New Alresford
- Locks Heath
- Dibden Purlieu
- North Baddesley
- Milford on Sea
- Netley
- Marchwood
- Hamble-le-Rice
- Lyndhurst
- Bursledon
- Colden Common
- Holbury
- Blackfield
- Boorley Green
- Brockenhurst
- Botley
- Springvale
- Sarisbury