This is a list of postcodes in the SO23 3 area covering the areas of City Centre, Abbotts Barton, Bar End, Highcliffe, Hyde, St Cross (E), Winnall, Winchester.
 Active postcode
Active postcode 
   Postcode no longer in use
Postcode no longer in use| Postcode | Latitude | Longitude | Easting | Northing | Grid reference | Active? | 
|---|---|---|---|---|---|---|
| SO23 3PE | 51.067547 | -1.29729 | 449335 | 130036 | SU493300 | No | 
| SO23 3PF | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3PG | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3PH | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3PJ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3PL | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3PN | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3PP | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3PQ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3PR | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3PS | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3PT | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3PW | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3PX | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3PZ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QA | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3QB | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3QE | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QF | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QG | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QH | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QJ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QL | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QN | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QP | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QQ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QR | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QS | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QT | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3QU | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QW | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QX | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QY | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3QZ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3RA | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3RB | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3RD | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3RE | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3RF | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3RG | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3RH | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3RJ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3RL | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3RN | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3RP | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3RQ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3RR | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3RS | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3RT | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3RU | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3RW | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3RX | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3RY | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3RZ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3SA | 51.060995 | -1.31136 | 448356 | 129298 | SU483292 | Yes | 
| SO23 3SB | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SD | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SE | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SF | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SG | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SH | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SJ | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SL | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SN | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SP | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SQ | 51.060995 | -1.31136 | 448356 | 129298 | SU483292 | Yes | 
| SO23 3SR | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SS | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3ST | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SU | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SW | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SX | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SY | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3SZ | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3TA | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3TB | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3TD | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3TE | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3TF | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3TG | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3TH | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3TJ | 51.061066 | -1.311316 | 448359 | 129306 | SU483293 | Yes | 
| SO23 3TL | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3TN | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3TP | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3TQ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3TR | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3TS | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3TT | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3TU | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3TW | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3TX | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3TY | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3TZ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3UA | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3UB | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UD | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UE | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UF | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UG | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3UJ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UL | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UN | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UP | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UR | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3US | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UT | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UU | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UW | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UX | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UY | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3UZ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3WA | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3WB | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3WD | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3WE | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3WF | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3WG | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | No | 
| SO23 3WH | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3WJ | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3WL | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3WN | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3WP | 51.067557 | -1.297333 | 449332 | 130037 | SU493300 | Yes | 
| SO23 3WY | 51.067547 | -1.29729 | 449335 | 130036 | SU493300 | No | 
| SO23 3WZ | 51.067547 | -1.29729 | 449335 | 130036 | SU493300 | No | 
| SO23 3ZZ | 51.067547 | -1.29729 | 449335 | 130036 | SU493300 | Yes |