W1J 9 postcode sector in the W1J district

W1J 9 is a sector of the W1J district: every postcode that starts W1J 9. It has 34 postcodes in use, 4 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 W1J 9 sector, and which are new since 2020

Map of every postcode in the W1J 9 sector, by new since 2020 Of the 34 postcodes in the W1J 9 sector that ONS places, 34 were in use before 2020. Places named: St James's. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A4201 W1J 9BR: before 2020W1J 9DZ: before 2020W1J 9EA: before 2020W1J 9EB: before 2020W1J 9ED: before 2020W1J 9EF: before 2020W1J 9EG: before 2020W1J 9EH: before 2020W1J 9EJ: before 2020W1J 9EN: before 2020W1J 9EQ: before 2020W1J 9ER: before 2020W1J 9ES: before 2020W1J 9ET: before 2020W1J 9EY: before 2020W1J 9EZ: before 2020W1J 9HA: before 2020W1J 9HB: before 2020W1J 9HD: before 2020W1J 9HL: before 2020W1J 9HN: before 2020W1J 9HP: before 2020W1J 9HR: before 2020W1J 9HS: before 2020W1J 9HT: before 2020W1J 9LE: before 2020W1J 9LL: before 2020W1J 9LN: before 2020 St James's Map of every postcode in the W1J 9 sector, by new since 2020 Of the 34 postcodes in the W1J 9 sector that ONS places, 34 were in use before 2020. Places named: St James's. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. St James's
  • New since 2020: 0
  • In use before 2020: 34

Of the 34 postcodes in the W1J 9 sector that ONS places, 34 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 W1J 9

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.

W1J 9BRW1J 9BSW1J 9BTW1J 9DZW1J 9EAW1J 9EBW1J 9EDW1J 9EEW1J 9EFW1J 9EGW1J 9EHW1J 9EJW1J 9ENW1J 9EQW1J 9ERW1J 9ESW1J 9ETW1J 9EUW1J 9EYW1J 9EZW1J 9HAW1J 9HBW1J 9HDW1J 9HLW1J 9HNW1J 9HPW1J 9HRW1J 9HSW1J 9HTW1J 9HUW1J 9HWW1J 9LEW1J 9LLW1J 9LN

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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