There are 13 postcodes in the built up area of Stock (North Somerset). The area contains approximately 33 households with a population of about 96 (2011 census)
 Active postcode
Active postcode 
   Postcode no longer in use
Postcode no longer in use| Postcode | Latitude | Longitude | Easting | Northing | Grid reference | Active? | 
|---|---|---|---|---|---|---|
| BS18 7EJ | 51.34379 | -2.787823 | 345224 | 160818 | ST452608 | No | 
| BS18 7EP | 51.346619 | -2.784297 | 345473 | 161130 | ST454611 | No | 
| BS18 7ER | 51.350854 | -2.784254 | 345481 | 161601 | ST454616 | No | 
| BS18 7ES | 51.348536 | -2.785349 | 345402 | 161344 | ST454613 | No | 
| BS18 7ET | 51.351996 | -2.784331 | 345477 | 161728 | ST454617 | No | 
| BS18 7EU | 51.353486 | -2.786008 | 345362 | 161895 | ST453618 | No | 
| BS18 7EY | 51.351674 | -2.78668 | 345313 | 161694 | ST453616 | No | 
| BS40 5EP | 51.346619 | -2.784297 | 345473 | 161130 | ST454611 | Yes | 
| BS40 5ER | 51.350368 | -2.784332 | 345475 | 161547 | ST454615 | Yes | 
| BS40 5ES | 51.348536 | -2.785349 | 345402 | 161344 | ST454613 | Yes | 
| BS40 5ET | 51.351996 | -2.784331 | 345477 | 161728 | ST454617 | Yes | 
| BS40 5EU | 51.353786 | -2.785597 | 345391 | 161928 | ST453619 | Yes | 
| BS40 5EY | 51.351201 | -2.78752 | 345254 | 161642 | ST452616 | Yes |