Sectors in IP11
| Sector | Main place | Postcodes |
|---|---|---|
| IP11 0 | Trimley St Mary | 141 |
| IP11 1 | Felixstowe | 4 |
| IP11 2 | Felixstowe | 252 |
| IP11 3 | Felixstowe | 48 |
| IP11 4 | Felixstowe | 16 |
| IP11 6 | Felixstowe | 13 |
| IP11 7 | Felixstowe | 219 |
| IP11 9 | Felixstowe | 281 |
Places covered by IP11
- Felixstowe East Suffolk · 820
- Trimley St Mary East Suffolk · 76
- Trimley St Martin East Suffolk · 63