WC1B 3 postcode sector in the WC1B district

WC1B 3 is a sector of the WC1B district: every postcode that starts WC1B 3. It has 89 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 WC1B 3 sector, and which are new since 2020

Map of every postcode in the WC1B 3 sector, by new since 2020 Of the 89 postcodes in the WC1B 3 sector that ONS places, 2 are new since 2020 and 87 were in use before 2020. Places named: Bloomsbury. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A4200A400 WC1B 3AA: before 2020WC1B 3AD: before 2020WC1B 3AE: before 2020WC1B 3AG: before 2020WC1B 3AH: before 2020WC1B 3AJ: before 2020WC1B 3AN: before 2020WC1B 3AR: before 2020WC1B 3AS: before 2020WC1B 3AT: before 2020WC1B 3AU: before 2020WC1B 3AX: before 2020WC1B 3AZ: before 2020WC1B 3BA: before 2020WC1B 3BD: before 2020WC1B 3BE: before 2020WC1B 3BF: before 2020WC1B 3BG: before 2020WC1B 3BJ: before 2020WC1B 3BL: before 2020WC1B 3BN: before 2020WC1B 3BP: before 2020WC1B 3BS: before 2020WC1B 3DA: before 2020WC1B 3DD: before 2020WC1B 3DG: before 2020WC1B 3DN: before 2020WC1B 3DP: before 2020WC1B 3DY: before 2020WC1B 3ED: before 2020WC1B 3EE: before 2020WC1B 3EL: before 2020WC1B 3GH: before 2020WC1B 3HA: before 2020WC1B 3HB: before 2020WC1B 3HE: before 2020WC1B 3HH: before 2020WC1B 3HN: before 2020WC1B 3HP: before 2020WC1B 3HX: before 2020WC1B 3JL: before 2020WC1B 3JQ: before 2020WC1B 3LA: before 2020WC1B 3LB: before 2020WC1B 3LH: before 2020WC1B 3LN: before 2020WC1B 3NA: before 2020WC1B 3NB: before 2020WC1B 3ND: before 2020WC1B 3NH: before 2020WC1B 3NN: before 2020WC1B 3NP: before 2020WC1B 3NZ: before 2020WC1B 3PA: before 2020WC1B 3PB: before 2020WC1B 3PD: before 2020WC1B 3PE: before 2020WC1B 3PH: before 2020WC1B 3PP: before 2020WC1B 3PS: before 2020WC1B 3QA: before 2020WC1B 3QD: before 2020WC1B 3QE: before 2020WC1B 3QJ: before 2020WC1B 3QQ: before 2020WC1B 3QT: before 2020WC1B 3QU: before 2020WC1B 3RA: before 2020WC1B 3RB: before 2020WC1B 3RD: before 2020WC1B 3RE: before 2020WC1B 3RF: before 2020WC1B 3RY: before 2020WC1B 3SR: before 2020WC1B 3BT: new since 2020WC1B 3JS: new since 2020 Bloomsbury Map of every postcode in the WC1B 3 sector, by new since 2020 Of the 89 postcodes in the WC1B 3 sector that ONS places, 2 are new since 2020 and 87 were in use before 2020. Places named: Bloomsbury. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Bloomsbury
  • New since 2020: 2
  • In use before 2020: 87

Of the 89 postcodes in the WC1B 3 sector that ONS places, 2 are new since 2020 and 87 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

The 2 newest postcodes

WC1B 3BTJanuary 2025WC1B 3JSJune 2023

What do homes sell for in WC1B 3?

HM Land Registry records 3 sales of homes in WC1B 3 in the 12 months to August 2026: too few to give a typical price.

  • Flat or maisonette 3 sales, too few to price

Standard sales of homes at market value at the postcodes that start WC1B 3. 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 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.

WC1B 3AAWC1B 3ADWC1B 3AEWC1B 3AGWC1B 3AHWC1B 3AJWC1B 3ANWC1B 3ARWC1B 3ASWC1B 3ATWC1B 3AUWC1B 3AXWC1B 3AZWC1B 3BAWC1B 3BDWC1B 3BEWC1B 3BFWC1B 3BGWC1B 3BJWC1B 3BLWC1B 3BNWC1B 3BPWC1B 3BSWC1B 3BTWC1B 3DAWC1B 3DDWC1B 3DEWC1B 3DGWC1B 3DNWC1B 3DPWC1B 3DRWC1B 3DYWC1B 3EDWC1B 3EEWC1B 3EGWC1B 3ELWC1B 3ESWC1B 3GHWC1B 3HAWC1B 3HBWC1B 3HEWC1B 3HHWC1B 3HNWC1B 3HPWC1B 3HXWC1B 3JAWC1B 3JLWC1B 3JQWC1B 3JSWC1B 3LAWC1B 3LBWC1B 3LEWC1B 3LHWC1B 3LNWC1B 3LQWC1B 3LSWC1B 3LWWC1B 3NAWC1B 3NBWC1B 3NDWC1B 3NHWC1B 3NNWC1B 3NPWC1B 3NZWC1B 3PAWC1B 3PBWC1B 3PDWC1B 3PEWC1B 3PHWC1B 3PLWC1B 3PPWC1B 3PRWC1B 3PSWC1B 3QAWC1B 3QDWC1B 3QEWC1B 3QJWC1B 3QQWC1B 3QTWC1B 3QUWC1B 3RAWC1B 3RBWC1B 3RDWC1B 3REWC1B 3RFWC1B 3RYWC1B 3SRWC1B 3UBWC1B 3WE

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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