M3 4 postcode sector in the M3 district

M3 4 is a sector of the M3 district: every postcode that starts M3 4. It has 100 postcodes in use, 4 of them large-user postcodes. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

Not sure what a sector is? UK postcode format explained.

Every postcode in the M3 4 sector, by flood risk

Map of every postcode in the M3 4 sector, by flood risk Of the 100 postcodes in the M3 4 sector that ONS places, 2 have a home or business at high risk, 2 are at medium risk at worst, 9 are at low risk at worst and 87 are not on the Environment Agency's at-risk list. Places named: Deansgate. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A6042A57A6143A56 M3 4AE: not on the flood risk listM3 4AL: not on the flood risk listM3 4AN: not on the flood risk listM3 4AP: not on the flood risk listM3 4AQ: not on the flood risk listM3 4AU: not on the flood risk listM3 4AY: not on the flood risk listM3 4BG: not on the flood risk listM3 4BJ: not on the flood risk listM3 4BN: not on the flood risk listM3 4BQ: not on the flood risk listM3 4DF: not on the flood risk listM3 4DG: not on the flood risk listM3 4DJ: not on the flood risk listM3 4DN: not on the flood risk listM3 4DQ: not on the flood risk listM3 4DS: not on the flood risk listM3 4DT: not on the flood risk listM3 4DU: not on the flood risk listM3 4DW: not on the flood risk listM3 4DY: not on the flood risk listM3 4DZ: not on the flood risk listM3 4EA: not on the flood risk listM3 4EB: not on the flood risk listM3 4ED: not on the flood risk listM3 4EE: not on the flood risk listM3 4EL: not on the flood risk listM3 4EN: not on the flood risk listM3 4EQ: not on the flood risk listM3 4EW: not on the flood risk listM3 4FG: not on the flood risk listM3 4FH: not on the flood risk listM3 4FJ: not on the flood risk listM3 4FL: not on the flood risk listM3 4FN: not on the flood risk listM3 4FP: not on the flood risk listM3 4FQ: not on the flood risk listM3 4FR: not on the flood risk listM3 4GA: not on the flood risk listM3 4HE: not on the flood risk listM3 4JB: not on the flood risk listM3 4JD: not on the flood risk listM3 4JH: not on the flood risk listM3 4JJ: not on the flood risk listM3 4JN: not on the flood risk listM3 4JP: not on the flood risk listM3 4JR: not on the flood risk listM3 4JU: not on the flood risk listM3 4JW: not on the flood risk listM3 4LP: not on the flood risk listM3 4LQ: not on the flood risk listM3 4LT: not on the flood risk listM3 4LY: not on the flood risk listM3 4LZ: not on the flood risk listM3 4NA: not on the flood risk listM3 4NE: not on the flood risk listM3 4NF: not on the flood risk listM3 4NH: not on the flood risk listM3 4NJ: not on the flood risk listM3 4NN: not on the flood risk listM3 4NQ: not on the flood risk listM3 4NS: not on the flood risk listM3 4NT: not on the flood risk listM3 4NW: not on the flood risk listM3 4NX: not on the flood risk listM3 4PF: not on the flood risk listM3 4PP: not on the flood risk listM3 4PR: not on the flood risk listM3 4QL: not on the flood risk listM3 4RU: not on the flood risk listM3 4SB: not on the flood risk listM3 4AR: low flood risk at worstM3 4BR: low flood risk at worstM3 4JA: low flood risk at worstM3 4JE: low flood risk at worstM3 4JL: low flood risk at worstM3 4LG: low flood risk at worstM3 4NB: low flood risk at worstM3 4BD: medium flood risk at worstM3 4JQ: medium flood risk at worstM3 4LA: high flood riskM3 4LB: high flood risk Deansgate Map of every postcode in the M3 4 sector, by flood risk Of the 100 postcodes in the M3 4 sector that ONS places, 2 have a home or business at high risk, 2 are at medium risk at worst, 9 are at low risk at worst and 87 are not on the Environment Agency's at-risk list. Places named: Deansgate. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A6042 Deansgate
  • A home or business at high risk: 2
  • At medium risk at worst: 2
  • At low risk at worst: 9
  • At very low risk only: 0
  • Not on the at-risk list: 87

Of the 100 postcodes in the M3 4 sector that ONS places, 2 have a home or business at high risk, 2 are at medium risk at worst, 9 are at low risk at worst and 87 are not on the Environment Agency's at-risk list.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The postcodes at high risk

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

M3 4LA47 at high riskM3 4LB24 at high risk

What do homes sell for in M3 4?

Homes in M3 4 sold for a typical £270,000 in the 12 months to August 2026, across 95 sales, up 23.9% on the 12 months before, HM Land Registry's figures show.

£270,000 typical price, the 12 months to August 2026
£218,000 12 months to August 2025
▲ up 23.9% on the 12 months before
  • Terraced 1 sale, too few to price
  • Flat or maisonette £269,638 94 sales

Standard sales of homes at market value at the postcodes that start M3 4. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in M3 4

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

M3 4AEM3 4ALM3 4ANM3 4APM3 4AQM3 4ARM3 4AUM3 4AYM3 4AZM3 4BAM3 4BBM3 4BDM3 4BEM3 4BGM3 4BHM3 4BJM3 4BNM3 4BQM3 4BRM3 4DAM3 4DFM3 4DGM3 4DJM3 4DNM3 4DQM3 4DRM3 4DSM3 4DTM3 4DUM3 4DWM3 4DYM3 4DZM3 4EAM3 4EBM3 4EDM3 4EEM3 4EFM3 4EHM3 4ELM3 4ENM3 4EPM3 4EQM3 4EWM3 4FGM3 4FHM3 4FJM3 4FLM3 4FNM3 4FPM3 4FQM3 4FRM3 4GAM3 4GBM3 4GDM3 4GEM3 4GFM3 4GGM3 4HEM3 4JAM3 4JBM3 4JDM3 4JEM3 4JHM3 4JJM3 4JLM3 4JNM3 4JPM3 4JQM3 4JRM3 4JUM3 4JWM3 4LAM3 4LBM3 4LGM3 4LPM3 4LQM3 4LTM3 4LUM3 4LXM3 4LYM3 4LZM3 4NAM3 4NBM3 4NEM3 4NFM3 4NHM3 4NJM3 4NNM3 4NQM3 4NSM3 4NTM3 4NUM3 4NWM3 4NXM3 4PFM3 4PPM3 4PRM3 4QLM3 4RUM3 4SB

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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