The approximate coverage of the postcode districts:
| Postcode district | Post town | Coverage | Local authority area |
|---|---|---|---|
| M1 | MANCHESTER | Piccadilly, City Centre, Market Street | Manchester |
| M2 | MANCHESTER | Deansgate, City Centre | Manchester |
| M3 |
MANCHESTER | City Centre, Deansgate, Castlefield | Manchester |
| M3 |
SALFORD | Blackfriars, Trinity | Salford |
| M4 | MANCHESTER | Ancoats, Northern Quarter, Strangeways | Manchester |
| M5 | SALFORD | Ordsall, Seedley, Weaste, University, Pendleton | Salford |
| M6 | SALFORD | Claremont, Irlams O' Th' Height, Charlestown | Salford |
| M7 | SALFORD | Higher Broughton, Cheetwood, Lower Broughton, Kersal | Salford |
| M8 | MANCHESTER | Crumpsall, Cheetham Hill | Manchester |
| M9 | MANCHESTER | Harpurhey, Blackley | Manchester |
| M11 | MANCHESTER | Clayton, Openshaw, Beswick | Manchester |
| M12 | MANCHESTER | Ardwick, Longsight, Chorlton-on-Medlock | Manchester |
| M13 | MANCHESTER | Ardwick, Longsight, Chorlton-on-Medlock | Manchester |
| M14 | MANCHESTER | Fallowfield, Moss Side, Ladybarn, Rusholme | Manchester |
| M15 | MANCHESTER | Hulme, Manchester Science Park | Manchester |
| M16 | MANCHESTER | Firswood, Old Trafford, Whalley Range | Trafford, Manchester |
| M17 | MANCHESTER | Trafford Park, The Trafford Centre | Trafford |
| M18 | MANCHESTER | Abbey Hey, Gorton | Manchester |
| M19 | MANCHESTER | Levenshulme, Burnage | Manchester |
| M20 | MANCHESTER | Didsbury, Withington | Manchester |
| M21 | MANCHESTER | Chorlton-cum-Hardy, Barlow Moor | Manchester |
| M22 | MANCHESTER | Wythenshawe, Northenden, Sharston Industrial Area | Manchester |
| M23 | MANCHESTER | Baguley, Roundthorn Industrial Estate | Manchester |
| M24 | MANCHESTER | Middleton, Alkrington | Rochdale |
| M25 | MANCHESTER | Prestwich, Sedgeley Park, Simister | Bury |
| M26 | MANCHESTER | Radcliffe, Stoneclough | Bury, Bolton |
| M27 | MANCHESTER | Swinton, Clifton, Pendlebury, Wardley, Agecroft | Salford |
| M28 | MANCHESTER | Worsley, Walkden, Boothstown, Mosley Common, Wardley Industrial Estate | Salford, Wigan |
| M29 | MANCHESTER | Tyldesley, Astley | Wigan |
| M30 | MANCHESTER | Eccles | Salford |
| M31 | MANCHESTER | Carrington, Partington | Trafford |
| M32 | MANCHESTER | Stretford | Trafford |
| M33 | SALE | Sale, Brooklands | Trafford |
| M34 | MANCHESTER | Denton, Audenshaw | Tameside |
| M35 | MANCHESTER | Failsworth, Woodhouses | Oldham |
| M38 | MANCHESTER | Little Hulton | Salford |
| M40 | MANCHESTER | Collyhurst, Miles Platting, Moston, New Moston, Newton Heath | Manchester |
| M41 | MANCHESTER | Urmston, Davyhulme, Barton Dock Road | Trafford |
| M43 | MANCHESTER | Droylsden | Tameside |
| M44 | MANCHESTER | Irlam, Cadishead | Salford |
| M45 | MANCHESTER | Whitefield | Bury |
| M46 | MANCHESTER | Atherton | Wigan |
| M50 | SALFORD | Salford Quays, MediaCityUK | Salford |
| M60 |
MANCHESTER | Large user and PO Box (located geographically in M1) | Manchester |
| M60 |
MANCHESTER | Large user and PO Box (located geographically in M2) | Manchester |
| M60 |
MANCHESTER | Large user and PO Box (located geographically in M3) | Manchester |
| M60 |
MANCHESTER | Large user and PO Box (located geographically in M4) | Manchester |
| M60 |
MANCHESTER | Manchester X | Manchester |
| M60 |
SALFORD | Large user and PO Box | Salford |
| M90 | MANCHESTER | Manchester Airport | Manchester |
| M99 | MANCHESTER | Manchester X; JD Williams (located geographically in M1 and M3) | Manchester |
Note: The original M10 postcode is obsolete, having been re-coded as M40 in 1993. Sometimes on Coronation Street they quote M10 as their postcode, for example on November 5th 2010 Kevin Webster quoted the postcode for the Garage as M10 9KC. In the 20.30pm episode which aired on the 25th May 2012 a driving licence belonging to Karl Munro was shown to have the M10 postcode once again.
Read more about this topic: M Postcode Area