The approximate coverage of the postcode districts:
| Postcode district | Post town | Coverage | Local authority area | |
|---|---|---|---|---|
| PO1 | PORTSMOUTH | Portsmouth, Fratton | Portsmouth | |
| PO2 | PORTSMOUTH | Portsmouth, Hilsea, North End | Portsmouth | |
| PO3 | PORTSMOUTH | Portsmouth, Hilsea | Portsmouth | |
| PO4 | SOUTHSEA | Southsea | Portsmouth | |
| PO5 | SOUTHSEA | Southsea | Portsmouth | |
| PO6 | PORTSMOUTH | Cosham | Portsmouth | |
| PO7 | WATERLOOVILLE | Waterlooville, Denmead, Purbrook | ||
| PO8 | WATERLOOVILLE | Clanfield, Cowplain, Horndean | ||
| PO9 | HAVANT | Havant | Havant | |
| PO9 | ROWLAND'S CASTLE | Rowland's Castle | Havant | |
| PO10 | EMSWORTH | Emsworth | Havant | |
| PO11 | HAYLING ISLAND | Hayling Island | Havant | |
| PO12 | GOSPORT | Gosport, Alverstoke, Hardway | Gosport | |
| PO12 | LEE-ON-THE-SOLENT | non-geographic | ||
| PO13 | GOSPORT | Gosport | Gosport | |
| PO13 | LEE-ON-THE-SOLENT | Lee-on-the-Solent | Gosport | |
| PO14 | FAREHAM | Fareham, Hill Head, Stubbington, Titchfield | Fareham | |
| PO15 | FAREHAM | Fareham, Titchfield, Whiteley | ||
| PO16 | FAREHAM | Portchester | Fareham | |
| PO17 | FAREHAM | Wickham | ||
| PO18 | CHICHESTER | |||
| PO19 | CHICHESTER | |||
| PO20 | CHICHESTER | |||
| PO21 | BOGNOR REGIS | |||
| PO22 | BOGNOR REGIS | |||
| PO30 | NEWPORT | Isle of Wight | ||
| PO30 | YARMOUTH | non-geographic | ||
| PO31 | COWES | Cowes, Gurnard | Isle of Wight | |
| PO32 | EAST COWES | East Cowes, Whippingham | Isle of Wight | |
| PO33 | RYDE | Isle of Wight | ||
| PO34 | SEAVIEW | Seaview | Isle of Wight | |
| PO35 | BEMBRIDGE | Bembridge, Whitecliff Bay | Isle of Wight | |
| PO36 | SANDOWN | Isle of Wight | ||
| PO36 | SHANKLIN | non-geographic | ||
| PO37 | SHANKLIN | Isle of Wight | ||
| PO38 | VENTNOR | Isle of Wight | ||
| PO39 | TOTLAND BAY | Totland Bay, Alum Bay | Isle of Wight | |
| PO40 | FRESHWATER | Freshwater | Isle of Wight | |
| PO41 | YARMOUTH | Isle of Wight |
Read more about this topic: PO Postcode Area