All postcodes in KT12 3
| Postcode | Place | Type |
|---|---|---|
| KT12 3SA | Walton-on-Thames | street |
| KT12 3SB | Walton-on-Thames | street |
| KT12 3SD | Walton-on-Thames | street |
| KT12 3SE | Walton-on-Thames | street |
| KT12 3SH | Walton-on-Thames | street |
| KT12 3SJ | Walton-on-Thames | street |
| KT12 3SL | Walton-on-Thames | street |
| KT12 3SQ | Walton-on-Thames | street |
| KT12 3TD | Walton-on-Thames | street |
| KT12 3XE | Walton-on-Thames | large user |
| KT12 3XH | Walton-on-Thames | large user |
Places in sector KT12 3
- Walton-on-Thames 186
- Hersham 4