Districts in the PO area
| District | Main place | Local authority | Sectors | Postcodes |
|---|---|---|---|---|
| PO1 | Portsmouth | Portsmouth | 6 | 911 |
| PO2 | Portsmouth | Portsmouth | 4 | 751 |
| PO3 | Portsmouth | Portsmouth | 2 | 441 |
| PO4 | Portsmouth | Portsmouth | 3 | 740 |
| PO5 | Portsmouth | Portsmouth | 4 | 661 |
| PO6 | Portsmouth | Portsmouth | 5 | 917 |
| PO7 | Waterlooville | Havant | 7 | 1,266 |
| PO8 | Horndean | East Hampshire | 3 | 873 |
| PO9 | Havant | Havant | 7 | 1,221 |
| PO10 | Emsworth | Chichester | 3 | 614 |
| PO11 | South Hayling | Havant | 3 | 472 |
| PO12 | Gosport | Gosport | 5 | 1,070 |
| PO13 | Gosport | Gosport | 3 | 789 |
| PO14 | Fareham | Fareham | 5 | 1,037 |
| PO15 | Fareham | Fareham | 3 | 703 |
| PO16 | Fareham | Fareham | 4 | 997 |
| PO17 | Wickham | Winchester | 3 | 334 |
| PO18 | Bosham | Chichester | 3 | 700 |
| PO19 | Chichester | Chichester | 7 | 1,253 |
| PO20 | Selsey | Chichester | 7 | 1,277 |
| PO21 | Bognor Regis | Arun | 6 | 1,352 |
| PO22 | Bognor Regis | Arun | 5 | 998 |
| PO30 | Newport | Isle of Wight | 6 | 1,082 |
| PO31 | Cowes | Isle of Wight | 2 | 468 |
| PO32 | East Cowes | Isle of Wight | 1 | 252 |
| PO33 | Ryde | Isle of Wight | 5 | 1,006 |
| PO34 | Nettlestone | Isle of Wight | 1 | 122 |
| PO35 | Bembridge | Isle of Wight | 1 | 164 |
| PO36 | Sandown | Isle of Wight | 4 | 552 |
| PO37 | Shanklin | Isle of Wight | 2 | 330 |
| PO38 | Ventnor | Isle of Wight | 4 | 598 |
| PO39 | Totland | Isle of Wight | 1 | 117 |
| PO40 | Freshwater | Isle of Wight | 2 | 293 |
| PO41 | Yarmouth | Isle of Wight | 1 | 151 |