All postcodes in IP11 4
| Postcode | Place | Type |
|---|---|---|
| IP11 4AG | Felixstowe | large user |
| IP11 4AN | Felixstowe | large user |
| IP11 4AW | Felixstowe | street |
| IP11 4AX | Felixstowe | street |
| IP11 4AY | Felixstowe | large user |
| IP11 4AZ | Felixstowe | street |
| IP11 4BA | Felixstowe | street |
| IP11 4BB | Felixstowe | street |
| IP11 4BE | Felixstowe | street |
| IP11 4HF | Felixstowe | street |
| IP11 4HQ | Felixstowe | street |
| IP11 4HU | Felixstowe | street |
| IP11 4SS | Felixstowe | street |
| IP11 4ST | Felixstowe | street |
| IP11 4XA | Felixstowe | street |
| IP11 4XQ | Felixstowe | street |
Places in sector IP11 4
- Felixstowe 16