| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Belstead, East of England) | IP2 9HB |
| Postal/ZIP Codes in Hadleigh Road Industrial Estate, East of England) | IP2 |
| Postal/ZIP Codes in Ipswich, East of England) | IP1, IP2, IP3, IP4 |
| Postal/ZIP Codes in Ransomes Europark, East of England) | IP3 9SJ, IP3 9SL, IP3 … |
| Postal/ZIP Codes in Ransomes Industrial Estate, East of England) | IP3 9RR, IP3 9RT, IP3 … |