W9 3 postcode sector in the W9 district

W9 3 is a sector of the W9 district: every postcode that starts W9 3. It has 185 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 W9 3 sector, by flood risk

Map of every postcode in the W9 3 sector, by flood risk Of the 185 postcodes in the W9 3 sector that ONS places, 185 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Harrow Road, Westbourne. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. W9 3AA: not on the flood risk listW9 3AB: not on the flood risk listW9 3AE: not on the flood risk listW9 3AH: not on the flood risk listW9 3AJ: not on the flood risk listW9 3AL: not on the flood risk listW9 3AN: not on the flood risk listW9 3AP: not on the flood risk listW9 3AR: not on the flood risk listW9 3AS: not on the flood risk listW9 3AT: not on the flood risk listW9 3AU: not on the flood risk listW9 3AY: not on the flood risk listW9 3AZ: not on the flood risk listW9 3BA: not on the flood risk listW9 3BB: not on the flood risk listW9 3BD: not on the flood risk listW9 3BE: not on the flood risk listW9 3BF: not on the flood risk listW9 3BG: not on the flood risk listW9 3BH: not on the flood risk listW9 3BJ: not on the flood risk listW9 3BL: not on the flood risk listW9 3BN: not on the flood risk listW9 3BQ: not on the flood risk listW9 3BW: not on the flood risk listW9 3DA: not on the flood risk listW9 3DB: not on the flood risk listW9 3DD: not on the flood risk listW9 3DE: not on the flood risk listW9 3DF: not on the flood risk listW9 3DG: not on the flood risk listW9 3DH: not on the flood risk listW9 3DJ: not on the flood risk listW9 3DL: not on the flood risk listW9 3DN: not on the flood risk listW9 3DP: not on the flood risk listW9 3DQ: not on the flood risk listW9 3DR: not on the flood risk listW9 3DS: not on the flood risk listW9 3DT: not on the flood risk listW9 3DW: not on the flood risk listW9 3DY: not on the flood risk listW9 3DZ: not on the flood risk listW9 3EA: not on the flood risk listW9 3EB: not on the flood risk listW9 3ED: not on the flood risk listW9 3EF: not on the flood risk listW9 3EG: not on the flood risk listW9 3EH: not on the flood risk listW9 3EJ: not on the flood risk listW9 3EL: not on the flood risk listW9 3EN: not on the flood risk listW9 3ER: not on the flood risk listW9 3ES: not on the flood risk listW9 3ET: not on the flood risk listW9 3EU: not on the flood risk listW9 3EW: not on the flood risk listW9 3EX: not on the flood risk listW9 3EY: not on the flood risk listW9 3EZ: not on the flood risk listW9 3HD: not on the flood risk listW9 3HE: not on the flood risk listW9 3HF: not on the flood risk listW9 3HH: not on the flood risk listW9 3HJ: not on the flood risk listW9 3HL: not on the flood risk listW9 3HN: not on the flood risk listW9 3HP: not on the flood risk listW9 3HR: not on the flood risk listW9 3HS: not on the flood risk listW9 3HT: not on the flood risk listW9 3HU: not on the flood risk listW9 3HX: not on the flood risk listW9 3HY: not on the flood risk listW9 3HZ: not on the flood risk listW9 3JA: not on the flood risk listW9 3JE: not on the flood risk listW9 3JF: not on the flood risk listW9 3JH: not on the flood risk listW9 3JJ: not on the flood risk listW9 3JL: not on the flood risk listW9 3JN: not on the flood risk listW9 3JP: not on the flood risk listW9 3JQ: not on the flood risk listW9 3JR: not on the flood risk listW9 3JS: not on the flood risk listW9 3JT: not on the flood risk listW9 3JU: not on the flood risk listW9 3JW: not on the flood risk listW9 3JX: not on the flood risk listW9 3JY: not on the flood risk listW9 3LF: not on the flood risk listW9 3LG: not on the flood risk listW9 3LL: not on the flood risk listW9 3LP: not on the flood risk listW9 3LQ: not on the flood risk listW9 3LR: not on the flood risk listW9 3LU: not on the flood risk listW9 3LW: not on the flood risk listW9 3LX: not on the flood risk listW9 3LY: not on the flood risk listW9 3LZ: not on the flood risk listW9 3NA: not on the flood risk listW9 3ND: not on the flood risk listW9 3NE: not on the flood risk listW9 3NF: not on the flood risk listW9 3NG: not on the flood risk listW9 3NH: not on the flood risk listW9 3NJ: not on the flood risk listW9 3NL: not on the flood risk listW9 3NN: not on the flood risk listW9 3NQ: not on the flood risk listW9 3NW: not on the flood risk listW9 3NX: not on the flood risk listW9 3NZ: not on the flood risk listW9 3PE: not on the flood risk listW9 3PF: not on the flood risk listW9 3PG: not on the flood risk listW9 3PH: not on the flood risk listW9 3PJ: not on the flood risk listW9 3PL: not on the flood risk listW9 3PN: not on the flood risk listW9 3PP: not on the flood risk listW9 3PQ: not on the flood risk listW9 3PR: not on the flood risk listW9 3PS: not on the flood risk listW9 3PT: not on the flood risk listW9 3PU: not on the flood risk listW9 3PX: not on the flood risk listW9 3PY: not on the flood risk listW9 3PZ: not on the flood risk listW9 3QA: not on the flood risk listW9 3QF: not on the flood risk listW9 3QG: not on the flood risk listW9 3QH: not on the flood risk listW9 3QJ: not on the flood risk listW9 3QP: not on the flood risk listW9 3QT: not on the flood risk listW9 3RA: not on the flood risk listW9 3RB: not on the flood risk listW9 3RE: not on the flood risk listW9 3RG: not on the flood risk listW9 3RH: not on the flood risk listW9 3RJ: not on the flood risk listW9 3RN: not on the flood risk listW9 3RP: not on the flood risk listW9 3RQ: not on the flood risk listW9 3RR: not on the flood risk listW9 3RS: not on the flood risk listW9 3RT: not on the flood risk listW9 3RU: not on the flood risk listW9 3SP: not on the flood risk listW9 3TA: not on the flood risk listW9 3TB: not on the flood risk listW9 3TD: not on the flood risk listW9 3TE: not on the flood risk listW9 3TF: not on the flood risk listW9 3TG: not on the flood risk listW9 3TJ: not on the flood risk listW9 3TL: not on the flood risk listW9 3TN: not on the flood risk listW9 3TP: not on the flood risk listW9 3TQ: not on the flood risk listW9 3TR: not on the flood risk listW9 3TT: not on the flood risk listW9 3TU: not on the flood risk listW9 3TX: not on the flood risk listW9 3TY: not on the flood risk listW9 3TZ: not on the flood risk listW9 3UA: not on the flood risk listW9 3UB: not on the flood risk listW9 3UD: not on the flood risk listW9 3UE: not on the flood risk listW9 3UF: not on the flood risk listW9 3UG: not on the flood risk listW9 3UH: not on the flood risk listW9 3UJ: not on the flood risk listW9 3UL: not on the flood risk listW9 3UN: not on the flood risk listW9 3XZ: not on the flood risk list Harrow RoadWestbourne Map of every postcode in the W9 3 sector, by flood risk Of the 185 postcodes in the W9 3 sector that ONS places, 185 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Harrow Road, Westbourne. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Harrow RoadWestbourne
  • 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: 185

Of the 185 postcodes in the W9 3 sector that ONS places, 185 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. 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; 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

Further out, not drawn

This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.

What do homes sell for in W9 3?

Homes in W9 3 sold for a typical £532,500 in the 12 months to August 2026, across 80 sales, down 5.5% on the 12 months before, HM Land Registry's figures show.

£532,500 typical price, the 12 months to August 2026
£563,750 12 months to August 2025
▼ down 5.5% on the 12 months before
  • Terraced 4 sales, too few to price
  • Flat or maisonette £527,500 76 sales

Standard sales of homes at market value at the postcodes that start W9 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 W9 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.

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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