| Postcode | Coverage Area |
| MK1 | Denbigh, Mount Farm |
| MK2 | Brickfields, Centralbletchley,Fenny Stratford,Water Eaton |
| MK3 | Church Green, Far Bletchley, Old Bletchley,Newton Leys,West Bletchley |
| MK4 | Emerson Valley, Furzton, Kingsmead, Oxley Park,Shenley Brook End, Snelshall West,Tattenhoe, Tattenhoe Park, Westcroft, Whaddon, Woodhill |
| MK5 | Crownhill,Elfield Park, Grange Farm, Oakhill, Knowlhill,Loughton, Medbourne,Shenley Brook End,Shenley Church End, Shenley Lodge, Shenley Wood |
| MK6 | Ashland, Beanhill, Bleak Hall, Coffee Hall, Eaglestone, Fishermead, Leadenhall, Netherfield, Oldbrook, Peartree Bridge, Redmoor, Springfield, Tinkers Bridge,Woughton On The Green, Woughton Park,Simpso |
| MK7 | Browns Wood,Caldecotte, Kents Hill, Tilbrook,Walton,Walton Hall,Wavendon,Wavendon Gate,Old Farm Park |
| MK8 | Crownhill, Grange Farm, Great Holm, Hazeley,Loughton, Loughton Lodge,Two Mile Ash, Wymbush |
| MK9 | Central Milton Keynes,Campbell Park |
| MK10 | Brinklow,Broughton, Kingston,Middleton, Monkston, Oakgrove |
| MK11 | Fullers Slade, Galley Hill, Kiln Farm,Stony Stratford |
| MK12 | Greenleys, Hodge Lea, Old Wolverton, Stacey Bushes,Wolverton, Wolverton Mill |
| MK13 | Bancroft/bancroft Park, Bluebridge,Bradwellandbradwell Abbey, Bradwell Common,New Bradwell, Heelands, Stonebridge |
| MK14 | Blakelands, Conniburrow, Downs Barn, Giffard Park,Great Linford, Linford Wood,Oakridge Park,Stantonbury, Neath Hill, Redhouse Park |
| MK15 | Bolbeck Park, Downhead Park, Fox Milne, Newlands,Pennyland, Pineham, Northfield,Tongwell, Willen Park,Willen, Willen Lake,Great Woolstone, Little Woolstone |
| MK16 | Astwood,Broughton,Chicheley,Filgrave,Gayhurst,Hardmead,Lathbury, Little Crawley,Moulsoe,North Crawley,Newport Pagnell,Sherington,Stoke Goldington,Tyringham |
| MK17 | Aspley Guise,Battlesden,Bow Brickhill,Drayton Parslow,Eversholt,Great Brickhill,Great Horwood,Hulcote,Little Brickhill,Little Horwood,Milton Bryan,Mursley,Nash,Newton Longville,Potsgrove,Salford,Stoke |
| MK19 | Beachampton,Calverton,Castlethorpecosgrove,Deanshanger,Hanslope,Haversham,Little Linford,Long Street,Old Stratford,Passenham,Upper Weald,Wicken |
| MK46 | Clifton Reynes,Cold Brayfield,Emberton,Lavendon,Olney,Ravenstone,Warrington,Weston Underwood |