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, by flood risk

Map of every postcode in the W1K 3 sector, by flood risk Of the 122 postcodes in the W1K 3 sector that ONS places, 122 are not on the Environment Agency's at-risk list. 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: not on the flood risk listW1K 3AD: not on the flood risk listW1K 3AF: not on the flood risk listW1K 3AH: not on the flood risk listW1K 3AJ: not on the flood risk listW1K 3AL: not on the flood risk listW1K 3AN: not on the flood risk listW1K 3AP: not on the flood risk listW1K 3AR: not on the flood risk listW1K 3AT: not on the flood risk listW1K 3AW: not on the flood risk listW1K 3AZ: not on the flood risk listW1K 3DA: not on the flood risk listW1K 3DB: not on the flood risk listW1K 3DE: not on the flood risk listW1K 3DJ: not on the flood risk listW1K 3DL: not on the flood risk listW1K 3DP: not on the flood risk listW1K 3DQ: not on the flood risk listW1K 3DS: not on the flood risk listW1K 3DT: not on the flood risk listW1K 3DU: not on the flood risk listW1K 3EH: not on the flood risk listW1K 3EQ: not on the flood risk listW1K 3HH: not on the flood risk listW1K 3HL: not on the flood risk listW1K 3HN: not on the flood risk listW1K 3HP: not on the flood risk listW1K 3HT: not on the flood risk listW1K 3HU: not on the flood risk listW1K 3HW: not on the flood risk listW1K 3HY: not on the flood risk listW1K 3HZ: not on the flood risk listW1K 3JA: not on the flood risk listW1K 3JB: not on the flood risk listW1K 3JE: not on the flood risk listW1K 3JG: not on the flood risk listW1K 3JH: not on the flood risk listW1K 3JL: not on the flood risk listW1K 3JN: not on the flood risk listW1K 3JP: not on the flood risk listW1K 3JR: not on the flood risk listW1K 3JS: not on the flood risk listW1K 3JU: not on the flood risk listW1K 3JX: not on the flood risk listW1K 3JY: not on the flood risk listW1K 3JZ: not on the flood risk listW1K 3LA: not on the flood risk listW1K 3LW: not on the flood risk listW1K 3LZ: not on the flood risk listW1K 3NA: not on the flood risk listW1K 3NE: not on the flood risk listW1K 3NF: not on the flood risk listW1K 3NH: not on the flood risk listW1K 3NL: not on the flood risk listW1K 3NN: not on the flood risk listW1K 3NP: not on the flood risk listW1K 3NR: not on the flood risk listW1K 3NT: not on the flood risk listW1K 3NU: not on the flood risk listW1K 3NX: not on the flood risk listW1K 3NY: not on the flood risk listW1K 3PA: not on the flood risk listW1K 3PB: not on the flood risk listW1K 3PD: not on the flood risk listW1K 3PF: not on the flood risk listW1K 3PH: not on the flood risk listW1K 3PJ: not on the flood risk listW1K 3PN: not on the flood risk listW1K 3PP: not on the flood risk listW1K 3PQ: not on the flood risk listW1K 3PR: not on the flood risk listW1K 3PS: not on the flood risk listW1K 3PT: not on the flood risk listW1K 3PU: not on the flood risk listW1K 3PX: not on the flood risk listW1K 3PY: not on the flood risk listW1K 3QA: not on the flood risk listW1K 3QB: not on the flood risk listW1K 3QD: not on the flood risk listW1K 3QQ: not on the flood risk listW1K 3QT: not on the flood risk listW1K 3QU: not on the flood risk listW1K 3RB: not on the flood risk listW1K 3RD: not on the flood risk listW1K 3RE: not on the flood risk listW1K 3RG: not on the flood risk listW1K 3RH: not on the flood risk listW1K 3RL: not on the flood risk listW1K 3RN: not on the flood risk listW1K 3SA: not on the flood risk listW1K 3SB: not on the flood risk listW1K 3SD: not on the flood risk listW1K 3SE: not on the flood risk listW1K 3SF: not on the flood risk listW1K 3SG: not on the flood risk listW1K 3SH: not on the flood risk list City of Westminster Map of every postcode in the W1K 3 sector, by flood risk Of the 122 postcodes in the W1K 3 sector that ONS places, 122 are not on the Environment Agency's at-risk list. 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
  • 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: 122

Of the 122 postcodes in the W1K 3 sector that ONS places, 122 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.

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

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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