This is a list of postcodes in the SO51 0 area covering the areas of Romsey, Ampfield, Lockerley, Mottisfont, Wellow, Test Valley. The area contains approximately 1,713 households with a population of about 4,507 (2011 census)
 Active postcode
Active postcode 
   Postcode no longer in use
Postcode no longer in use| Postcode | Latitude | Longitude | Easting | Northing | Grid reference | Active? | 
|---|---|---|---|---|---|---|
| SO51 0QT | 51.048076 | -1.455294 | 438280 | 127777 | SU382277 | Yes | 
| SO51 0QU | 51.046893 | -1.463881 | 437679 | 127641 | SU376276 | Yes | 
| SO51 0QW | 51.035338 | -1.45426 | 438363 | 126361 | SU383263 | Yes | 
| SO51 0RA | 51.032504 | -1.546403 | 431904 | 126002 | SU319260 | Yes | 
| SO51 0RB | 51.047419 | -1.464988 | 437601 | 127699 | SU376276 | No | 
| SO51 0RD | 51.047419 | -1.464988 | 437601 | 127699 | SU376276 | No | 
| SO51 0RE | 51.047419 | -1.464988 | 437601 | 127699 | SU376276 | No | 
| SO51 0RF | 51.025299 | -1.516887 | 433979 | 125214 | SU339252 | No | 
| SO51 0RG | 51.033137 | -1.571239 | 430162 | 126062 | SU301260 | Yes | 
| SO51 0RH | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0RJ | 51.024449 | -1.466222 | 437533 | 125144 | SU375251 | Yes | 
| SO51 0SF | 51.014735 | -1.541772 | 432241 | 124028 | SU322240 | Yes | 
| SO51 0UZ | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WA | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WB | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WD | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WE | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WF | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WG | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WH | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WJ | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WL | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WN | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WP | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WQ | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WR | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WS | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WT | 51.025308 | -1.516887 | 433979 | 125215 | SU339252 | No | 
| SO51 0WU | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WW | 50.990005 | -1.500014 | 435189 | 121297 | SU351212 | No | 
| SO51 0WX | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WY | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0WZ | 51.025308 | -1.516887 | 433979 | 125215 | SU339252 | No | 
| SO51 0XA | 50.990005 | -1.500014 | 435189 | 121297 | SU351212 | No | 
| SO51 0XB | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0XJ | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0XR | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0XZ | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0YD | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0YN | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0YQ | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0YT | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0YU | 51.025308 | -1.516887 | 433979 | 125215 | SU339252 | No | 
| SO51 0ZA | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0ZB | 51.01422 | -1.491357 | 435778 | 123994 | SU357239 | No | 
| SO51 0ZD | 51.025308 | -1.516887 | 433979 | 125215 | SU339252 | No | 
| SO51 0ZE | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0ZF | 50.990867 | -1.461407 | 437898 | 121412 | SU378214 | No | 
| SO51 0ZG | 51.025308 | -1.516887 | 433979 | 125215 | SU339252 | No | 
| SO51 0ZH | 50.990004 | -1.499829 | 435202 | 121297 | SU352212 | No | 
| SO51 0ZJ | 51.025299 | -1.516887 | 433979 | 125214 | SU339252 | No | 
| SO51 0ZL | 51.025299 | -1.516887 | 433979 | 125214 | SU339252 | No | 
| SO51 0ZN | 50.999341 | -1.51975 | 433797 | 122326 | SU337223 | Yes | 
| SO51 0ZP | 51.025308 | -1.516887 | 433979 | 125215 | SU339252 | No | 
| SO51 0ZQ | 50.996851 | -1.502833 | 434986 | 122057 | SU349220 | No | 
| SO51 0ZR | 51.025308 | -1.516887 | 433979 | 125215 | SU339252 | No | 
| SO51 0ZS | 51.007212 | -1.520367 | 433748 | 123201 | SU337232 | No | 
| SO51 0ZT | 51.00176 | -1.511118 | 434401 | 122599 | SU344225 | No | 
| SO51 0ZX | 50.996329 | -1.502625 | 435001 | 121999 | SU350219 | No | 
| SO51 0ZY | 50.997216 | -1.499766 | 435201 | 122099 | SU352220 | No |