TW9 3 postcode sector in the TW9 district

TW9 3 is a sector of the TW9 district: every postcode that starts TW9 3. It has 126 postcodes in use, 7 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 TW9 3 sector, by flood risk

Map of every postcode in the TW9 3 sector, by flood risk Of the 126 postcodes in the TW9 3 sector that ONS places, 3 have a home or business at high risk, 57 are at very low risk only and 66 are not on the Environment Agency's at-risk list. Places named: Kew. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A316 TW9 3AB: not on the flood risk listTW9 3AW: not on the flood risk listTW9 3BF: not on the flood risk listTW9 3DN: not on the flood risk listTW9 3DS: not on the flood risk listTW9 3DX: not on the flood risk listTW9 3DY: not on the flood risk listTW9 3EB: not on the flood risk listTW9 3ED: not on the flood risk listTW9 3EE: not on the flood risk listTW9 3EF: not on the flood risk listTW9 3EG: not on the flood risk listTW9 3EH: not on the flood risk listTW9 3EL: not on the flood risk listTW9 3GA: not on the flood risk listTW9 3HG: not on the flood risk listTW9 3HP: not on the flood risk listTW9 3HR: not on the flood risk listTW9 3HS: not on the flood risk listTW9 3JA: not on the flood risk listTW9 3JR: not on the flood risk listTW9 3JS: not on the flood risk listTW9 3JT: not on the flood risk listTW9 3JU: not on the flood risk listTW9 3JX: not on the flood risk listTW9 3JY: not on the flood risk listTW9 3JZ: not on the flood risk listTW9 3LA: not on the flood risk listTW9 3LB: not on the flood risk listTW9 3LD: not on the flood risk listTW9 3LE: not on the flood risk listTW9 3LG: not on the flood risk listTW9 3LH: not on the flood risk listTW9 3LJ: not on the flood risk listTW9 3LL: not on the flood risk listTW9 3LQ: not on the flood risk listTW9 3LU: not on the flood risk listTW9 3LZ: not on the flood risk listTW9 3NA: not on the flood risk listTW9 3NB: not on the flood risk listTW9 3NF: not on the flood risk listTW9 3NG: not on the flood risk listTW9 3NH: not on the flood risk listTW9 3NJ: not on the flood risk listTW9 3NL: not on the flood risk listTW9 3NN: not on the flood risk listTW9 3NP: not on the flood risk listTW9 3NR: not on the flood risk listTW9 3NS: not on the flood risk listTW9 3NW: not on the flood risk listTW9 3PE: not on the flood risk listTW9 3PF: not on the flood risk listTW9 3PG: not on the flood risk listTW9 3PN: not on the flood risk listTW9 3PP: not on the flood risk listTW9 3PQ: not on the flood risk listTW9 3PR: not on the flood risk listTW9 3PS: not on the flood risk listTW9 3PZ: not on the flood risk listTW9 3QA: not on the flood risk listTW9 3QB: not on the flood risk listTW9 3QD: not on the flood risk listTW9 3QF: not on the flood risk listTW9 3AA: very low flood risk onlyTW9 3AE: very low flood risk onlyTW9 3AF: very low flood risk onlyTW9 3AG: very low flood risk onlyTW9 3AH: very low flood risk onlyTW9 3AL: very low flood risk onlyTW9 3AP: very low flood risk onlyTW9 3AQ: very low flood risk onlyTW9 3AS: very low flood risk onlyTW9 3AT: very low flood risk onlyTW9 3AU: very low flood risk onlyTW9 3AX: very low flood risk onlyTW9 3AY: very low flood risk onlyTW9 3AZ: very low flood risk onlyTW9 3BB: very low flood risk onlyTW9 3BD: very low flood risk onlyTW9 3BH: very low flood risk onlyTW9 3BL: very low flood risk onlyTW9 3BQ: very low flood risk onlyTW9 3BS: very low flood risk onlyTW9 3BT: very low flood risk onlyTW9 3BU: very low flood risk onlyTW9 3BW: very low flood risk onlyTW9 3BX: very low flood risk onlyTW9 3BY: very low flood risk onlyTW9 3BZ: very low flood risk onlyTW9 3DA: very low flood risk onlyTW9 3DB: very low flood risk onlyTW9 3DD: very low flood risk onlyTW9 3DE: very low flood risk onlyTW9 3DF: very low flood risk onlyTW9 3DG: very low flood risk onlyTW9 3DH: very low flood risk onlyTW9 3DQ: very low flood risk onlyTW9 3DT: very low flood risk onlyTW9 3DU: very low flood risk onlyTW9 3DW: very low flood risk onlyTW9 3DZ: very low flood risk onlyTW9 3EA: very low flood risk onlyTW9 3HA: very low flood risk onlyTW9 3HB: very low flood risk onlyTW9 3HD: very low flood risk onlyTW9 3HE: very low flood risk onlyTW9 3HF: very low flood risk onlyTW9 3HH: very low flood risk onlyTW9 3HJ: very low flood risk onlyTW9 3HL: very low flood risk onlyTW9 3HQ: very low flood risk onlyTW9 3HT: very low flood risk onlyTW9 3HW: very low flood risk onlyTW9 3JB: very low flood risk onlyTW9 3JD: very low flood risk onlyTW9 3JE: very low flood risk onlyTW9 3JF: very low flood risk onlyTW9 3JG: very low flood risk onlyTW9 3JJ: very low flood risk onlyTW9 3JQ: very low flood risk onlyTW9 3AN: high flood riskTW9 3BE: high flood riskTW9 3BG: high flood risk Kew Map of every postcode in the TW9 3 sector, by flood risk Of the 126 postcodes in the TW9 3 sector that ONS places, 3 have a home or business at high risk, 57 are at very low risk only and 66 are not on the Environment Agency's at-risk list. Places named: Kew. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Kew
  • A home or business at high risk: 3
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 57
  • Not on the at-risk list: 66

Of the 126 postcodes in the TW9 3 sector that ONS places, 3 have a home or business at high risk, 57 are at very low risk only and 66 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

The postcodes at high risk

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

TW9 3AN5 at high riskTW9 3BE2 at high riskTW9 3BG1 at high risk

What do homes sell for in TW9 3?

Homes in TW9 3 sold for a typical £750,000 in the 12 months to August 2026, across 49 sales, up 4.2% on the 12 months before, HM Land Registry's figures show.

£750,000 typical price, the 12 months to August 2026
£720,000 12 months to August 2025
▲ up 4.2% on the 12 months before
  • Detached 2 sales, too few to price
  • Semi-detached £1,700,000 9 sales
  • Terraced £920,000 13 sales
  • Flat or maisonette £516,000 25 sales

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value at the postcodes that start TW9 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 TW9 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.

TW9 3AATW9 3ABTW9 3AETW9 3AFTW9 3AGTW9 3AHTW9 3ALTW9 3ANTW9 3APTW9 3AQTW9 3ASTW9 3ATTW9 3AUTW9 3AWTW9 3AXTW9 3AYTW9 3AZTW9 3BBTW9 3BDTW9 3BETW9 3BFTW9 3BGTW9 3BHTW9 3BLTW9 3BQTW9 3BSTW9 3BTTW9 3BUTW9 3BWTW9 3BXTW9 3BYTW9 3BZTW9 3DATW9 3DBTW9 3DDTW9 3DETW9 3DFTW9 3DGTW9 3DHTW9 3DNTW9 3DQTW9 3DSTW9 3DTTW9 3DUTW9 3DWTW9 3DXTW9 3DYTW9 3DZTW9 3EATW9 3EBTW9 3EDTW9 3EETW9 3EFTW9 3EGTW9 3EHTW9 3ELTW9 3GATW9 3HATW9 3HBTW9 3HDTW9 3HETW9 3HFTW9 3HGTW9 3HHTW9 3HJTW9 3HLTW9 3HPTW9 3HQTW9 3HRTW9 3HSTW9 3HTTW9 3HWTW9 3JATW9 3JBTW9 3JDTW9 3JETW9 3JFTW9 3JGTW9 3JJTW9 3JQTW9 3JRTW9 3JSTW9 3JTTW9 3JUTW9 3JXTW9 3JYTW9 3JZTW9 3LATW9 3LBTW9 3LDTW9 3LETW9 3LFTW9 3LGTW9 3LHTW9 3LJTW9 3LLTW9 3LQTW9 3LUTW9 3LZTW9 3NATW9 3NBTW9 3NFTW9 3NGTW9 3NHTW9 3NJTW9 3NLTW9 3NNTW9 3NPTW9 3NRTW9 3NSTW9 3NWTW9 3PETW9 3PFTW9 3PGTW9 3PNTW9 3PPTW9 3PQTW9 3PRTW9 3PSTW9 3PZTW9 3QATW9 3QBTW9 3QDTW9 3QFTW9 3QRTW9 3WX

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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