PO - Portsmouth
The postal area PO (Portsmouth) comprises of the following post towns; these towns should be written in capital letters when used in addresses.
Postal Districts within PO - Portsmouth
| Country | Post Town | Postal District |
| England | Portsmouth | PO1 PO2 PO3 |
| Southsea | PO4 PO5 |
|
| Havant Rowlands Castle |
PO9 | |
| Emsworth | PO10 | |
| Hayling Island | PO11 | |
| Gosport | PO12 | |
| Lee-on-Solent | PO13 | |
| Fareham | PO14 PO15 PO16 PO17 |
|
| Chichester | PO18 PO19 PO20 |
|
| Bognor Regis | PO21 PO22 |
|
| Newport | PO30 | |
| Cowes | PO31 | |
| East Cowes | PO32 | |
| Ryde | PO33 | |
| Seaview | PO34 | |
| Bembridge | PO35 | |
| Sandown | PO36 | |
| Shanklin | PO37 | |
| Ventnor | PO38 | |
| Totland Bay | PO39 | |
| Freshwater | PO40 | |
| Yarmouth | PO41 |
