| Postcode district |
Post town |
Coverage |
Local authority area(s) |
| SN1 |
SWINDON |
Swindon town centre south of the railway line, Old Town, southwest suburbs |
Swindon |
| SN2 |
SWINDON |
Swindon town centre north of the railway line, inner suburbs to the north and northwest including Upper Stratton and Kingsdown |
Swindon |
| SN3 |
SWINDON |
Swindon east suburbs, Stratton St Margaret, South Marston |
Swindon |
| SN4 |
SWINDON |
Royal Wootton Bassett, Clyffe Pypard, Broad Town, Broad Hinton, Wroughton, Chiseldon, Liddington, Wanborough, Hinton Parva |
Swindon, Wiltshire |
| SN5 |
SWINDON |
West Swindon, Lydiard Millicent, Purton |
Swindon, Wiltshire |
| SN6 |
SWINDON |
Highworth, Cricklade, Shrivenham, Watchfield, Ashton Keynes, Ashbury, Bishopstone, Castle Eaton, Hannington, Idstone, Marston Meysey, Leigh |
Swindon, Wiltshire, Vale of White Horse |
| SN7 |
FARINGDON |
Faringdon, Stanford in the Vale, Uffington, Longcot, Fernham, Buckland, Great Coxwell, Little Coxwell, Littleworth, Shellingford, Buscot |
Vale of White Horse |
| SN8 |
MARLBOROUGH |
Marlborough, Ramsbury, Mildenhall, Aldbourne, Axford, Burbage, Baydon, Great Bedwyn |
Wiltshire |
| SN9 |
PEWSEY |
Pewsey, Upavon, Enford |
Wiltshire |
| SN10 |
DEVIZES |
Devizes, Market Lavington, Rowde |
Wiltshire |
| SN11 |
CALNE |
Calne, Heddington, Hilmarton |
Wiltshire |
| SN12 |
MELKSHAM |
Melksham, Bowerhill, Seend, Broughton Gifford |
Wiltshire |
| SN13 |
CORSHAM |
Corsham, Box, Neston |
Wiltshire |
| SN14 |
CHIPPENHAM |
Chippenham (west), Marshfield, Kington St Michael, Hullavington, Luckington, Grittleton, Yatton Keynell, Biddestone, Colerne, Cold Ashton |
Wiltshire, South Gloucestershire |
| SN15 |
CHIPPENHAM |
Chippenham (east), Bromham, Sandy Lane, Lacock, Burleaze, Pewsham, Monkton Park, Foxham, Dauntsey, Seagry, Christian Malford, Bradenstoke, Sutton Benger, Lyneham, Draycot Cerne, Cleverton, Little Somerford, Langley Burrell, Great Somerford, Brinkworth[3] |
Wiltshire |
| SN15 |
CORSHAM |
|
non-geographic[4] |
| SN16 |
MALMESBURY |
Sherston, Malmesbury, Crudwell, Minety |
Wiltshire |
| SN25 |
SWINDON |
Swindon outer north suburbs including Haydon Wick and Priory Vale; St Andrews |
Swindon |
| SN26 |
SWINDON |
Blunsdon |
Swindon |
| SN38 |
SWINDON |
Nationwide Building Society |
non-geographic[5] |
| SN80 |
SWINDON |
Royal Wootton Bassett |
Wiltshire |
| SN99 |
SWINDON |
|
non-geographic[5] |