PO postcode area
The PO area holds 34 districts and 24,512 live postcodes; its largest place is Portsmouth.
| District | Live postcodes | Largest place with its centre there |
|---|---|---|
| PO1 | 911 | Portsmouth |
| PO2 | 751 | — |
| PO3 | 441 | — |
| PO4 | 740 | — |
| PO5 | 661 | Southsea |
| PO6 | 917 | Cosham |
| PO7 | 1,266 | Waterlooville |
| PO8 | 873 | Cowplain |
| PO9 | 1,221 | Havant |
| PO10 | 614 | Emsworth |
| PO11 | 472 | Hayling Island |
| PO12 | 1,070 | Gosport |
| PO13 | 789 | Lee-on-the-Solent |
| PO14 | 1,037 | Titchfield |
| PO15 | 703 | — |
| PO16 | 997 | Fareham |
| PO17 | 334 | Wickham |
| PO18 | 700 | Boxgrove |
| PO19 | 1,253 | Chichester |
| PO20 | 1,277 | Selsey |
| PO21 | 1,352 | Bognor Regis |
| PO22 | 998 | Barnham |
| PO30 | 1,082 | Newport |
| PO31 | 468 | Cowes |
| PO32 | 252 | East Cowes |
| PO33 | 1,006 | Ryde |
| PO34 | 122 | Seaview |
| PO35 | 164 | Bembridge |
| PO36 | 552 | Sandown |
| PO37 | 330 | Shanklin |
| PO38 | 598 | Ventnor |
| PO39 | 117 | Totland |
| PO40 | 293 | Freshwater |
| PO41 | 151 | Yarmouth |
Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Postcode data is the ONS Postcode Directory, August 2026 edition; counts are live postcodes with a usable location. Northern Ireland postcodes carry a separate licence and are not included; Scotland joins when the site's Scottish coverage does.