W1C 1 postcode sector in the W1C district

W1C 1 is a sector of the W1C district: every postcode that starts W1C 1. It has 64 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 W1C 1 sector, and which are new since 2020

Map of every postcode in the W1C 1 sector, by new since 2020 Of the 64 postcodes in the W1C 1 sector that ONS places, 4 are new since 2020 and 60 were in use before 2020. Places named: City of Westminster. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A41A5204 W1C 1AS: before 2020W1C 1AT: before 2020W1C 1AX: before 2020W1C 1AY: before 2020W1C 1AZ: before 2020W1C 1BA: before 2020W1C 1BB: before 2020W1C 1BE: before 2020W1C 1BF: before 2020W1C 1BG: before 2020W1C 1BQ: before 2020W1C 1BY: before 2020W1C 1DA: before 2020W1C 1DB: before 2020W1C 1DH: before 2020W1C 1DJ: before 2020W1C 1DL: before 2020W1C 1DN: before 2020W1C 1DP: before 2020W1C 1DR: before 2020W1C 1DS: before 2020W1C 1DW: before 2020W1C 1DX: before 2020W1C 1ES: before 2020W1C 1HG: before 2020W1C 1JB: before 2020W1C 1JE: before 2020W1C 1JF: before 2020W1C 1JG: before 2020W1C 1JJ: before 2020W1C 1JN: before 2020W1C 1JP: before 2020W1C 1JS: before 2020W1C 1JT: before 2020W1C 1JW: before 2020W1C 1JY: before 2020W1C 1LA: before 2020W1C 1LB: before 2020W1C 1LL: before 2020W1C 1LU: before 2020W1C 1LX: before 2020W1C 1LZ: before 2020W1C 1NA: before 2020W1C 1AD: new since 2020W1C 1AE: new since 2020W1C 1BH: new since 2020 City of Westminster Map of every postcode in the W1C 1 sector, by new since 2020 Of the 64 postcodes in the W1C 1 sector that ONS places, 4 are new since 2020 and 60 were in use before 2020. Places named: City of Westminster. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. City of Westminster
  • New since 2020: 4
  • In use before 2020: 60

Of the 64 postcodes in the W1C 1 sector that ONS places, 4 are new since 2020 and 60 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.

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 4 newest postcodes

W1C 1APJune 2026W1C 1AEMay 2026W1C 1ADSeptember 2024W1C 1BHMarch 2024

Postcodes in W1C 1

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.

W1C 1ADW1C 1AEW1C 1APW1C 1ASW1C 1ATW1C 1AXW1C 1AYW1C 1AZW1C 1BAW1C 1BBW1C 1BEW1C 1BFW1C 1BGW1C 1BHW1C 1BQW1C 1BYW1C 1DAW1C 1DBW1C 1DDW1C 1DEW1C 1DHW1C 1DJW1C 1DLW1C 1DNW1C 1DPW1C 1DRW1C 1DSW1C 1DTW1C 1DWW1C 1DXW1C 1ESW1C 1HGW1C 1JBW1C 1JEW1C 1JFW1C 1JGW1C 1JHW1C 1JJW1C 1JNW1C 1JPW1C 1JRW1C 1JSW1C 1JTW1C 1JUW1C 1JWW1C 1JXW1C 1JYW1C 1LAW1C 1LBW1C 1LDW1C 1LEW1C 1LFW1C 1LGW1C 1LLW1C 1LNW1C 1LPW1C 1LQW1C 1LRW1C 1LUW1C 1LWW1C 1LXW1C 1LZW1C 1NAW1C 1NB

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.

Other sectors in W1C

W1C 2 sector All of W1C W postcode area

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