IP - Ipswich
The postal area IP (Ipswich) comprises of the following post towns; these towns should be written in capital letters when used in addresses.
Postal Districts within IP - Ipswich
| Country | Post Town | Postal District |
| England | Ipswich | IP1 IP2 IP3 IP4 IP5 IP6 IP7 IP8 IP9 IP10 |
| Felixstowe | IP11 | |
| Woodbridge | IP12 IP13 |
|
| Stowmarket | IP14 | |
| Aldeburgh | IP15 | |
| Leiston | IP16 | |
| Saxmundham | IP17 | |
| Southwold | IP18 | |
| Halesworth | IP19 | |
| Harleston | IP20 | |
| Diss | IP21 IP22 |
|
| Eye | IP23 | |
| Thetford | IP24 IP25 IP26 |
|
| Brandon | IP27 | |
| Bury St. Edmunds | IP28 IP29 IP30 IP31 IP32 IP33 |
