WC1B 4 postcode sector in the WC1B district

WC1B 4 is a sector of the WC1B district: every postcode that starts WC1B 4. It has 25 postcodes in use, 5 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 WC1B 4 sector, by flood risk

Map of every postcode in the WC1B 4 sector, by flood risk Of the 25 postcodes in the WC1B 4 sector that ONS places, 25 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Bloomsbury, Holborn & Covent Garden. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A400A40 WC1B 4AA: not on the flood risk listWC1B 4AE: not on the flood risk listWC1B 4AF: not on the flood risk listWC1B 4AR: not on the flood risk listWC1B 4BA: not on the flood risk listWC1B 4BB: not on the flood risk listWC1B 4BH: not on the flood risk listWC1B 4BJ: not on the flood risk listWC1B 4BL: not on the flood risk listWC1B 4DA: not on the flood risk listWC1B 4ET: not on the flood risk listWC1B 4HA: not on the flood risk listWC1B 4HD: not on the flood risk listWC1B 4HH: not on the flood risk listWC1B 4HP: not on the flood risk listWC1B 4HR: not on the flood risk listWC1B 4HS: not on the flood risk listWC1B 4JA: not on the flood risk listWC1B 4JP: not on the flood risk list BloomsburyHolborn & Covent Garden Map of every postcode in the WC1B 4 sector, by flood risk Of the 25 postcodes in the WC1B 4 sector that ONS places, 25 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Bloomsbury, Holborn & Covent Garden. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. BloomsburyHolborn & Covent Garden
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 25

Of the 25 postcodes in the WC1B 4 sector that ONS places, 25 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

Further out, not drawn

This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.

WC1B 4EE

What do homes sell for in WC1B 4?

HM Land Registry records 4 sales of homes in WC1B 4 in the 12 months to August 2026: too few to give a typical price.

  • Flat or maisonette 4 sales, too few to price

Standard sales of homes at market value at the postcodes that start WC1B 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 WC1B 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.

WC1B 4AAWC1B 4AEWC1B 4AFWC1B 4ARWC1B 4BAWC1B 4BBWC1B 4BHWC1B 4BJWC1B 4BLWC1B 4BNWC1B 4BPWC1B 4BSWC1B 4DAWC1B 4EAWC1B 4EEWC1B 4ETWC1B 4HAWC1B 4HDWC1B 4HHWC1B 4HPWC1B 4HRWC1B 4HSWC1B 4JAWC1B 4JPWC1B 4JU

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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