EC3M 3 postcode sector in the EC3M district

EC3M 3 is a sector of the EC3M district: every postcode that starts EC3M 3. It has 8 postcodes in use, 3 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 EC3M 3 sector, and which are new since 2020

Map of every postcode in the EC3M 3 sector, by new since 2020 Of the 8 postcodes in the EC3M 3 sector that ONS places, 8 were in use before 2020. Places named: Bridge, Billingsgate. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A3211A100A3A1211 EC3M 3AG: before 2020EC3M 3BD: before 2020EC3M 3BE: before 2020EC3M 3BF: before 2020EC3M 3JY: before 2020 BridgeBillingsgate Map of every postcode in the EC3M 3 sector, by new since 2020 Of the 8 postcodes in the EC3M 3 sector that ONS places, 8 were in use before 2020. Places named: Bridge, Billingsgate. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A3211A100 BridgeBillingsgate
  • New since 2020: 0
  • In use before 2020: 8

Of the 8 postcodes in the EC3M 3 sector that ONS places, 8 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. 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; when each came into use: the same directory; 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

Postcodes in EC3M 3

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.

EC3M 3AGEC3M 3AWEC3M 3AZEC3M 3BDEC3M 3BEEC3M 3BFEC3M 3BYEC3M 3JY

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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