All postcodes in CO6 5
| Postcode | Place | Type |
|---|---|---|
| CO6 5AA | Polstead | street |
| CO6 5AB | Mill Street | street |
| CO6 5AD | Mill Street | street |
| CO6 5AE | Mill Street | street |
| CO6 5AF | Polstead | street |
| CO6 5AG | Bell's Corner | street |
| CO6 5AH | Polstead | street |
| CO6 5AL | Polstead | street |
| CO6 5AN | Polstead | street |
| CO6 5AQ | — | street |
| CO6 5AR | Polstead | street |
| CO6 5AS | Polstead | street |
| CO6 5AT | — | street |
| CO6 5AU | — | street |
| CO6 5AX | — | street |
| CO6 5AY | Polstead Heath | street |
| CO6 5BA | — | street |
| CO6 5BB | Polstead Heath | street |
| CO6 5BD | Polstead Heath | street |
| CO6 5BE | Polstead Heath | street |
| CO6 5BF | — | street |
| CO6 5BG | Polstead Heath | street |
| CO6 5BP | Polstead | street |
| CO6 5BQ | — | street |
| CO6 5BS | — | street |
| CO6 5BT | — | street |
| CO6 5BU | — | street |
| CO6 5BX | — | street |
| CO6 5BZ | — | street |
| CO6 5DA | Bower House Tye | street |
| CO6 5DB | Bower House Tye | street |
| CO6 5DD | Bower House Tye | street |
| CO6 5DE | — | street |
| CO6 5DG | — | street |
| CO6 5DH | — | street |
| CO6 5DJ | — | street |
| CO6 5DL | — | street |
| CO6 5DN | — | street |
| CO6 5DW | Whitestreet Green | street |
| CO6 5WY | Polstead | large user |
| CO6 5WZ | Polstead | large user |
| CO6 5YY | Polstead | large user |