TW1 3 postcode sector in the TW1 district

TW1 3 is a sector of the TW1 district: every postcode that starts TW1 3. It has 122 postcodes in use, 9 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 TW1 3 sector, by flood risk

Map of every postcode in the TW1 3 sector, by flood risk Of the 122 postcodes in the TW1 3 sector that ONS places, 6 have a home or business at high risk, 10 are at medium risk at worst, 7 are at low risk at worst, 11 are at very low risk only and 88 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 7 postcodes at high or medium risk; 7 postcodes at high or medium risk. One postcode lies beyond the edge and is listed under the map. Places named: Richmond upon Thames. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A305A3004 TW1 3AA: not on the flood risk listTW1 3AB: not on the flood risk listTW1 3AD: not on the flood risk listTW1 3AE: not on the flood risk listTW1 3AF: not on the flood risk listTW1 3AG: not on the flood risk listTW1 3AH: not on the flood risk listTW1 3AJ: not on the flood risk listTW1 3AL: not on the flood risk listTW1 3AN: not on the flood risk listTW1 3AP: not on the flood risk listTW1 3AQ: not on the flood risk listTW1 3AR: not on the flood risk listTW1 3AS: not on the flood risk listTW1 3AT: not on the flood risk listTW1 3AU: not on the flood risk listTW1 3AW: not on the flood risk listTW1 3AX: not on the flood risk listTW1 3AY: not on the flood risk listTW1 3BA: not on the flood risk listTW1 3BE: not on the flood risk listTW1 3BF: not on the flood risk listTW1 3BH: not on the flood risk listTW1 3BW: not on the flood risk listTW1 3BZ: not on the flood risk listTW1 3DA: not on the flood risk listTW1 3DB: not on the flood risk listTW1 3DD: not on the flood risk listTW1 3DE: not on the flood risk listTW1 3DF: not on the flood risk listTW1 3EG: not on the flood risk listTW1 3EH: not on the flood risk listTW1 3EJ: not on the flood risk listTW1 3EP: not on the flood risk listTW1 3EQ: not on the flood risk listTW1 3ER: not on the flood risk listTW1 3ES: not on the flood risk listTW1 3EU: not on the flood risk listTW1 3EW: not on the flood risk listTW1 3EX: not on the flood risk listTW1 3HB: not on the flood risk listTW1 3HD: not on the flood risk listTW1 3HE: not on the flood risk listTW1 3HG: not on the flood risk listTW1 3HH: not on the flood risk listTW1 3HJ: not on the flood risk listTW1 3HP: not on the flood risk listTW1 3HQ: not on the flood risk listTW1 3HR: not on the flood risk listTW1 3HT: not on the flood risk listTW1 3HW: not on the flood risk listTW1 3JB: not on the flood risk listTW1 3JD: not on the flood risk listTW1 3JF: not on the flood risk listTW1 3JS: not on the flood risk listTW1 3JT: not on the flood risk listTW1 3JU: not on the flood risk listTW1 3JZ: not on the flood risk listTW1 3LD: not on the flood risk listTW1 3LJ: not on the flood risk listTW1 3LP: not on the flood risk listTW1 3LS: not on the flood risk listTW1 3ND: not on the flood risk listTW1 3NE: not on the flood risk listTW1 3NF: not on the flood risk listTW1 3NG: not on the flood risk listTW1 3NH: not on the flood risk listTW1 3NN: not on the flood risk listTW1 3NS: not on the flood risk listTW1 3NZ: not on the flood risk listTW1 3PA: not on the flood risk listTW1 3PB: not on the flood risk listTW1 3QS: not on the flood risk listTW1 3RJ: not on the flood risk listTW1 3RP: not on the flood risk listTW1 3RR: not on the flood risk listTW1 3RZ: not on the flood risk listTW1 3SD: not on the flood risk listTW1 3SE: not on the flood risk listTW1 3SG: not on the flood risk listTW1 3SH: not on the flood risk listTW1 3SN: not on the flood risk listTW1 3SX: not on the flood risk listTW1 3SY: not on the flood risk listTW1 3SZ: not on the flood risk listTW1 3EE: very low flood risk onlyTW1 3EL: very low flood risk onlyTW1 3EN: very low flood risk onlyTW1 3HN: very low flood risk onlyTW1 3HS: very low flood risk onlyTW1 3HU: very low flood risk onlyTW1 3HX: very low flood risk onlyTW1 3HY: very low flood risk onlyTW1 3JA: very low flood risk onlyTW1 3NJ: very low flood risk onlyTW1 3SP: very low flood risk onlyTW1 3BB: low flood risk at worstTW1 3DG: low flood risk at worstTW1 3DH: low flood risk at worstTW1 3DP: low flood risk at worstTW1 3DQ: low flood risk at worstTW1 3NP: low flood risk at worstTW1 3NU: low flood risk at worstTW1 3BJ: medium flood risk at worstTW1 3DJ: medium flood risk at worstTW1 3DR: medium flood risk at worstTW1 3DS: medium flood risk at worstTW1 3DT: medium flood risk at worstTW1 3DW: medium flood risk at worstTW1 3DX: medium flood risk at worstTW1 3NR: medium flood risk at worstTW1 3NX: medium flood risk at worstTW1 3NY: medium flood risk at worstTW1 3BL: high flood riskTW1 3DL: high flood riskTW1 3DN: high flood riskTW1 3DU: high flood riskTW1 3DY: high flood riskTW1 3EA: high flood risk Richmond upon Thames 7 postcodes at high or medium risk, outlined: this goes to TW1 3DL, the one with most homes and businesses at high risk7 postcodes at high or medium risk7 postcodes at high or medium risk, outlined: this goes to TW1 3DY, the one with most homes and businesses at high risk7 postcodes at high or medium risk Map of every postcode in the TW1 3 sector, by flood risk Of the 122 postcodes in the TW1 3 sector that ONS places, 6 have a home or business at high risk, 10 are at medium risk at worst, 7 are at low risk at worst, 11 are at very low risk only and 88 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 7 postcodes at high or medium risk; 7 postcodes at high or medium risk. One postcode lies beyond the edge and is listed under the map. Places named: Richmond upon Thames. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A305 Richmond upon Thames
  • A home or business at high risk: 6
  • At medium risk at worst: 10
  • At low risk at worst: 7
  • At very low risk only: 11
  • Not on the at-risk list: 88
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 122 postcodes in the TW1 3 sector that ONS places, 6 have a home or business at high risk, 10 are at medium risk at worst, 7 are at low risk at worst, 11 are at very low risk only and 88 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. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and 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

The postcodes at high risk

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

TW1 3DY90 at high riskTW1 3EA19 at high riskTW1 3DL6 at high riskTW1 3DU5 at high riskTW1 3BL2 at high riskTW1 3DN2 at high risk

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.

TW1 3TB

Where the postcodes at high or medium risk lie together

  • 7 postcodes at high or medium risk, outlined on the map. TW1 3DL, is the one with most homes and businesses at high risk.
  • 7 postcodes at high or medium risk, outlined on the map. TW1 3DY, is the one with most homes and businesses at high risk.

What do homes sell for in TW1 3?

Homes in TW1 3 sold for a typical £637,500 in the 12 months to August 2026, across 56 sales, up 4.5% on the 12 months before, HM Land Registry's figures show.

£637,500 typical price, the 12 months to August 2026
£610,000 12 months to August 2025
▲ up 4.5% on the 12 months before
  • Detached 3 sales, too few to price
  • Semi-detached £1,505,000 8 sales
  • Terraced £1,150,000 18 sales
  • Flat or maisonette £380,000 27 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 TW1 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 TW1 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.

TW1 3AATW1 3ABTW1 3ADTW1 3AETW1 3AFTW1 3AGTW1 3AHTW1 3AJTW1 3ALTW1 3ANTW1 3APTW1 3AQTW1 3ARTW1 3ASTW1 3ATTW1 3AUTW1 3AWTW1 3AXTW1 3AYTW1 3BATW1 3BBTW1 3BETW1 3BFTW1 3BHTW1 3BJTW1 3BLTW1 3BWTW1 3BZTW1 3DATW1 3DBTW1 3DDTW1 3DETW1 3DFTW1 3DGTW1 3DHTW1 3DJTW1 3DLTW1 3DNTW1 3DPTW1 3DQTW1 3DRTW1 3DSTW1 3DTTW1 3DUTW1 3DWTW1 3DXTW1 3DYTW1 3EATW1 3EETW1 3EGTW1 3EHTW1 3EJTW1 3ELTW1 3ENTW1 3EPTW1 3EQTW1 3ERTW1 3ESTW1 3EUTW1 3EWTW1 3EXTW1 3HBTW1 3HDTW1 3HETW1 3HGTW1 3HHTW1 3HJTW1 3HNTW1 3HPTW1 3HQTW1 3HRTW1 3HSTW1 3HTTW1 3HUTW1 3HWTW1 3HXTW1 3HYTW1 3JATW1 3JBTW1 3JDTW1 3JFTW1 3JSTW1 3JTTW1 3JUTW1 3JZTW1 3LDTW1 3LJTW1 3LPTW1 3LSTW1 3NDTW1 3NETW1 3NFTW1 3NGTW1 3NHTW1 3NJTW1 3NLTW1 3NNTW1 3NPTW1 3NRTW1 3NSTW1 3NUTW1 3NXTW1 3NYTW1 3NZTW1 3PATW1 3PBTW1 3QSTW1 3RJTW1 3RPTW1 3RRTW1 3RZTW1 3SBTW1 3SDTW1 3SETW1 3SGTW1 3SHTW1 3SNTW1 3SPTW1 3SXTW1 3SYTW1 3SZTW1 3TB

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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