W1K 3 postcode sector in the W1K district

W1K 3 is a sector of the W1K district: every postcode that starts W1K 3. It has 122 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 W1K 3 sector, and which are new since 2020

Map of every postcode in the W1K 3 sector, by new since 2020 Of the 122 postcodes in the W1K 3 sector that ONS places, 2 are new since 2020 and 120 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. A4202A4201 W1K 3AB: before 2020W1K 3AD: before 2020W1K 3AF: before 2020W1K 3AH: before 2020W1K 3AJ: before 2020W1K 3AL: before 2020W1K 3AN: before 2020W1K 3AP: before 2020W1K 3AR: before 2020W1K 3AT: before 2020W1K 3AW: before 2020W1K 3AZ: before 2020W1K 3DA: before 2020W1K 3DB: before 2020W1K 3DE: before 2020W1K 3DJ: before 2020W1K 3DL: before 2020W1K 3DP: before 2020W1K 3DQ: before 2020W1K 3DS: before 2020W1K 3DT: before 2020W1K 3DU: before 2020W1K 3EH: before 2020W1K 3EQ: before 2020W1K 3HH: before 2020W1K 3HL: before 2020W1K 3HP: before 2020W1K 3HT: before 2020W1K 3HU: before 2020W1K 3HW: before 2020W1K 3HY: before 2020W1K 3HZ: before 2020W1K 3JA: before 2020W1K 3JB: before 2020W1K 3JE: before 2020W1K 3JG: before 2020W1K 3JH: before 2020W1K 3JL: before 2020W1K 3JN: before 2020W1K 3JP: before 2020W1K 3JR: before 2020W1K 3JS: before 2020W1K 3JU: before 2020W1K 3JX: before 2020W1K 3JY: before 2020W1K 3JZ: before 2020W1K 3LA: before 2020W1K 3LW: before 2020W1K 3LZ: before 2020W1K 3NA: before 2020W1K 3NE: before 2020W1K 3NF: before 2020W1K 3NH: before 2020W1K 3NL: before 2020W1K 3NN: before 2020W1K 3NP: before 2020W1K 3NR: before 2020W1K 3NT: before 2020W1K 3NU: before 2020W1K 3NX: before 2020W1K 3NY: before 2020W1K 3PA: before 2020W1K 3PB: before 2020W1K 3PD: before 2020W1K 3PF: before 2020W1K 3PH: before 2020W1K 3PJ: before 2020W1K 3PN: before 2020W1K 3PP: before 2020W1K 3PQ: before 2020W1K 3PR: before 2020W1K 3PS: before 2020W1K 3PT: before 2020W1K 3PU: before 2020W1K 3PX: before 2020W1K 3PY: before 2020W1K 3QA: before 2020W1K 3QB: before 2020W1K 3QD: before 2020W1K 3QQ: before 2020W1K 3QT: before 2020W1K 3QU: before 2020W1K 3RB: before 2020W1K 3RD: before 2020W1K 3RE: before 2020W1K 3RG: before 2020W1K 3RH: before 2020W1K 3RL: before 2020W1K 3RN: before 2020W1K 3SA: before 2020W1K 3SB: before 2020W1K 3SD: before 2020W1K 3SE: before 2020W1K 3SF: before 2020W1K 3SG: before 2020W1K 3HN: new since 2020W1K 3SH: new since 2020 City of Westminster Map of every postcode in the W1K 3 sector, by new since 2020 Of the 122 postcodes in the W1K 3 sector that ONS places, 2 are new since 2020 and 120 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: 2
  • In use before 2020: 120

Of the 122 postcodes in the W1K 3 sector that ONS places, 2 are new since 2020 and 120 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 2 newest postcodes

W1K 3HNAugust 2023W1K 3SHJune 2023

What do homes sell for in W1K 3?

HM Land Registry records 2 sales of homes in W1K 3 in the 12 months to August 2026: too few to give a typical price.

  • Terraced 1 sale, too few to price
  • Flat or maisonette 1 sale, too few to price

Standard sales of homes at market value at the postcodes that start W1K 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 W1K 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.

W1K 3ABW1K 3ADW1K 3AFW1K 3AHW1K 3AJW1K 3ALW1K 3ANW1K 3APW1K 3ARW1K 3ASW1K 3ATW1K 3AWW1K 3AXW1K 3AZW1K 3DAW1K 3DBW1K 3DEW1K 3DJW1K 3DLW1K 3DNW1K 3DPW1K 3DQW1K 3DRW1K 3DSW1K 3DTW1K 3DUW1K 3DWW1K 3EHW1K 3EPW1K 3EQW1K 3ERW1K 3HHW1K 3HLW1K 3HNW1K 3HPW1K 3HTW1K 3HUW1K 3HWW1K 3HYW1K 3HZW1K 3JAW1K 3JBW1K 3JEW1K 3JFW1K 3JGW1K 3JHW1K 3JLW1K 3JNW1K 3JPW1K 3JRW1K 3JSW1K 3JUW1K 3JXW1K 3JYW1K 3JZW1K 3LAW1K 3LJW1K 3LWW1K 3LZW1K 3NAW1K 3NBW1K 3NDW1K 3NEW1K 3NFW1K 3NGW1K 3NHW1K 3NJW1K 3NLW1K 3NNW1K 3NPW1K 3NQW1K 3NRW1K 3NSW1K 3NTW1K 3NUW1K 3NWW1K 3NXW1K 3NYW1K 3PAW1K 3PBW1K 3PDW1K 3PFW1K 3PGW1K 3PHW1K 3PJW1K 3PNW1K 3PPW1K 3PQW1K 3PRW1K 3PSW1K 3PTW1K 3PUW1K 3PWW1K 3PXW1K 3PYW1K 3PZW1K 3QAW1K 3QBW1K 3QDW1K 3QQW1K 3QTW1K 3QUW1K 3RAW1K 3RBW1K 3RDW1K 3REW1K 3RFW1K 3RGW1K 3RHW1K 3RJW1K 3RLW1K 3RNW1K 3RQW1K 3SAW1K 3SBW1K 3SDW1K 3SEW1K 3SFW1K 3SGW1K 3SHW1K 3SQW1K 3TA

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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