M3 5 postcode sector in the M3 district

M3 5 is a sector of the M3 district: every postcode that starts M3 5. It has 127 postcodes in use, 18 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 5 sector, by flood risk

Map of every postcode in the M3 5 sector, by flood risk Of the 127 postcodes in the M3 5 sector that ONS places, 1 have a home or business at high risk, 45 are at low risk at worst and 81 are not on the Environment Agency's at-risk list. Places named: Blackfriars & Trinity, Ordsall. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A6042A56 M3 5AJ: not on the flood risk listM3 5AX: not on the flood risk listM3 5AY: not on the flood risk listM3 5AZ: not on the flood risk listM3 5BT: not on the flood risk listM3 5DQ: not on the flood risk listM3 5EG: not on the flood risk listM3 5EN: not on the flood risk listM3 5EP: not on the flood risk listM3 5EQ: not on the flood risk listM3 5ET: not on the flood risk listM3 5EX: not on the flood risk listM3 5FP: not on the flood risk listM3 5GA: not on the flood risk listM3 5GG: not on the flood risk listM3 5GS: not on the flood risk listM3 5GT: not on the flood risk listM3 5GY: not on the flood risk listM3 5GZ: not on the flood risk listM3 5HA: not on the flood risk listM3 5HF: not on the flood risk listM3 5HG: not on the flood risk listM3 5HH: not on the flood risk listM3 5HJ: not on the flood risk listM3 5HP: not on the flood risk listM3 5HR: not on the flood risk listM3 5HU: not on the flood risk listM3 5HW: not on the flood risk listM3 5HX: not on the flood risk listM3 5HY: not on the flood risk listM3 5HZ: not on the flood risk listM3 5JE: not on the flood risk listM3 5JF: not on the flood risk listM3 5JH: not on the flood risk listM3 5JL: not on the flood risk listM3 5JT: not on the flood risk listM3 5JY: not on the flood risk listM3 5JZ: not on the flood risk listM3 5LA: not on the flood risk listM3 5LE: not on the flood risk listM3 5LF: not on the flood risk listM3 5LG: not on the flood risk listM3 5LJ: not on the flood risk listM3 5LL: not on the flood risk listM3 5NH: not on the flood risk listM3 5PA: not on the flood risk listM3 5PE: not on the flood risk listM3 5PF: not on the flood risk listM3 5AG: low flood risk at worstM3 5AL: low flood risk at worstM3 5AP: low flood risk at worstM3 5BJ: low flood risk at worstM3 5BQ: low flood risk at worstM3 5BY: low flood risk at worstM3 5BZ: low flood risk at worstM3 5DE: low flood risk at worstM3 5DF: low flood risk at worstM3 5DG: low flood risk at worstM3 5DW: low flood risk at worstM3 5DX: low flood risk at worstM3 5DY: low flood risk at worstM3 5EU: low flood risk at worstM3 5EW: low flood risk at worstM3 5EZ: low flood risk at worstM3 5FF: low flood risk at worstM3 5FN: low flood risk at worstM3 5FS: low flood risk at worstM3 5FZ: low flood risk at worstM3 5GF: low flood risk at worstM3 5GP: low flood risk at worstM3 5JR: low flood risk at worstM3 5JS: low flood risk at worstM3 5LH: low flood risk at worstM3 5NA: low flood risk at worstM3 5NB: low flood risk at worstM3 5NE: low flood risk at worstM3 5NG: low flood risk at worstM3 5AS: high flood risk Blackfriars & TrinityOrdsall Map of every postcode in the M3 5 sector, by flood risk Of the 127 postcodes in the M3 5 sector that ONS places, 1 have a home or business at high risk, 45 are at low risk at worst and 81 are not on the Environment Agency's at-risk list. Places named: Blackfriars & Trinity, Ordsall. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Blackfriars & TrinityOrdsall
  • A home or business at high risk: 1
  • At medium risk at worst: 0
  • At low risk at worst: 45
  • At very low risk only: 0
  • Not on the at-risk list: 81

Of the 127 postcodes in the M3 5 sector that ONS places, 1 have a home or business at high risk, 45 are at low risk at worst and 81 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.

What do homes sell for in M3 5?

Homes in M3 5 sold for a typical £200,000 in the 12 months to August 2026, across 31 sales, down 12.1% on the 12 months before, HM Land Registry's figures show.

£200,000 typical price, the 12 months to August 2026
£227,500 12 months to August 2025
▼ down 12.1% on the 12 months before
  • Terraced 1 sale, too few to price
  • Flat or maisonette £199,000 30 sales

Standard sales of homes at market value at the postcodes that start M3 5. 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

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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