SW20 9 postcode sector in the SW20 district

SW20 9 is a sector of the SW20 district: every postcode that starts SW20 9. It has 137 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 SW20 9 sector, by flood risk

Map of every postcode in the SW20 9 sector, by flood risk Of the 137 postcodes in the SW20 9 sector that ONS places, 18 have a home or business at high risk, 1 are at medium risk at worst, 8 are at low risk at worst and 110 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 8 postcodes at high or medium risk; 8 postcodes at high or medium risk. Places named: West Barnes, Cannon Hill. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A298 SW20 9AA: not on the flood risk listSW20 9AB: not on the flood risk listSW20 9AD: not on the flood risk listSW20 9AE: not on the flood risk listSW20 9AF: not on the flood risk listSW20 9AG: not on the flood risk listSW20 9AH: not on the flood risk listSW20 9AJ: not on the flood risk listSW20 9AN: not on the flood risk listSW20 9AP: not on the flood risk listSW20 9AQ: not on the flood risk listSW20 9AR: not on the flood risk listSW20 9AS: not on the flood risk listSW20 9AU: not on the flood risk listSW20 9AW: not on the flood risk listSW20 9AY: not on the flood risk listSW20 9BA: not on the flood risk listSW20 9BB: not on the flood risk listSW20 9BD: not on the flood risk listSW20 9BE: not on the flood risk listSW20 9BF: not on the flood risk listSW20 9BG: not on the flood risk listSW20 9BJ: not on the flood risk listSW20 9BN: not on the flood risk listSW20 9BP: not on the flood risk listSW20 9BS: not on the flood risk listSW20 9BT: not on the flood risk listSW20 9BU: not on the flood risk listSW20 9BW: not on the flood risk listSW20 9BX: not on the flood risk listSW20 9BY: not on the flood risk listSW20 9BZ: not on the flood risk listSW20 9DB: not on the flood risk listSW20 9DD: not on the flood risk listSW20 9DF: not on the flood risk listSW20 9DG: not on the flood risk listSW20 9DH: not on the flood risk listSW20 9DJ: not on the flood risk listSW20 9DL: not on the flood risk listSW20 9DN: not on the flood risk listSW20 9DP: not on the flood risk listSW20 9DQ: not on the flood risk listSW20 9DR: not on the flood risk listSW20 9DT: not on the flood risk listSW20 9DW: not on the flood risk listSW20 9DX: not on the flood risk listSW20 9DY: not on the flood risk listSW20 9DZ: not on the flood risk listSW20 9EA: not on the flood risk listSW20 9EB: not on the flood risk listSW20 9ED: not on the flood risk listSW20 9EE: not on the flood risk listSW20 9EF: not on the flood risk listSW20 9EG: not on the flood risk listSW20 9EN: not on the flood risk listSW20 9EP: not on the flood risk listSW20 9ER: not on the flood risk listSW20 9ES: not on the flood risk listSW20 9ET: not on the flood risk listSW20 9EU: not on the flood risk listSW20 9EW: not on the flood risk listSW20 9EX: not on the flood risk listSW20 9HA: not on the flood risk listSW20 9HB: not on the flood risk listSW20 9HD: not on the flood risk listSW20 9HE: not on the flood risk listSW20 9HF: not on the flood risk listSW20 9HG: not on the flood risk listSW20 9HL: not on the flood risk listSW20 9HN: not on the flood risk listSW20 9HQ: not on the flood risk listSW20 9HU: not on the flood risk listSW20 9HX: not on the flood risk listSW20 9HY: not on the flood risk listSW20 9JB: not on the flood risk listSW20 9JD: not on the flood risk listSW20 9JE: not on the flood risk listSW20 9JF: not on the flood risk listSW20 9JG: not on the flood risk listSW20 9JH: not on the flood risk listSW20 9JP: not on the flood risk listSW20 9JQ: not on the flood risk listSW20 9JR: not on the flood risk listSW20 9JS: not on the flood risk listSW20 9JT: not on the flood risk listSW20 9JU: not on the flood risk listSW20 9JX: not on the flood risk listSW20 9JY: not on the flood risk listSW20 9JZ: not on the flood risk listSW20 9LA: not on the flood risk listSW20 9LB: not on the flood risk listSW20 9LD: not on the flood risk listSW20 9LE: not on the flood risk listSW20 9LY: not on the flood risk listSW20 9LZ: not on the flood risk listSW20 9NF: not on the flood risk listSW20 9NN: not on the flood risk listSW20 9NP: not on the flood risk listSW20 9NR: not on the flood risk listSW20 9NS: not on the flood risk listSW20 9NT: not on the flood risk listSW20 9NU: not on the flood risk listSW20 9NX: not on the flood risk listSW20 9NY: not on the flood risk listSW20 9NZ: not on the flood risk listSW20 9PA: not on the flood risk listSW20 9HH: low flood risk at worstSW20 9HJ: low flood risk at worstSW20 9LW: low flood risk at worstSW20 9NB: low flood risk at worstSW20 9NE: low flood risk at worstSW20 9NH: low flood risk at worstSW20 9NJ: low flood risk at worstSW20 9NQ: low flood risk at worstSW20 9AT: medium flood risk at worstSW20 9AX: high flood riskSW20 9AZ: high flood riskSW20 9BH: high flood riskSW20 9BQ: high flood riskSW20 9DS: high flood riskSW20 9HZ: high flood riskSW20 9JA: high flood riskSW20 9LL: high flood riskSW20 9LN: high flood riskSW20 9LP: high flood riskSW20 9LR: high flood riskSW20 9LS: high flood riskSW20 9LT: high flood riskSW20 9LU: high flood riskSW20 9LX: high flood riskSW20 9NA: high flood riskSW20 9NL: high flood riskSW20 9PB: high flood risk West BarnesCannon Hill 8 postcodes at high or medium risk, outlined: this goes to SW20 9AZ, the one with most homes and businesses at high risk8 postcodes at high or medium risk8 postcodes at high or medium risk, outlined: this goes to SW20 9LT, the one with most homes and businesses at high risk8 postcodes at high or medium risk Map of every postcode in the SW20 9 sector, by flood risk Of the 137 postcodes in the SW20 9 sector that ONS places, 18 have a home or business at high risk, 1 are at medium risk at worst, 8 are at low risk at worst and 110 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 8 postcodes at high or medium risk; 8 postcodes at high or medium risk. Places named: West Barnes, Cannon Hill. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. West BarnesCannon Hill
  • A home or business at high risk: 18
  • At medium risk at worst: 1
  • At low risk at worst: 8
  • At very low risk only: 0
  • Not on the at-risk list: 110
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 137 postcodes in the SW20 9 sector that ONS places, 18 have a home or business at high risk, 1 are at medium risk at worst, 8 are at low risk at worst and 110 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. 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

18 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

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

SW20 9LT43 at high riskSW20 9AZ26 at high riskSW20 9NL24 at high riskSW20 9LN21 at high riskSW20 9AX17 at high riskSW20 9LS17 at high riskSW20 9DS16 at high riskSW20 9LR15 at high riskSW20 9BQ14 at high riskSW20 9PB12 at high riskSW20 9BH9 at high riskSW20 9LL8 at high risk

Where the postcodes at high or medium risk lie together

  • 8 postcodes at high or medium risk, outlined on the map. SW20 9AZ, is the one with most homes and businesses at high risk.
  • 8 postcodes at high or medium risk, outlined on the map. SW20 9LT, is the one with most homes and businesses at high risk.

What do homes sell for in SW20 9?

Homes in SW20 9 sold for a typical £690,000 in the 12 months to August 2026, across 75 sales, down 5.5% on the 12 months before, HM Land Registry's figures show.

£690,000 typical price, the 12 months to August 2026
£730,100 12 months to August 2025
▼ down 5.5% on the 12 months before
  • Detached 4 sales, too few to price
  • Semi-detached £917,500 18 sales
  • Terraced £785,000 30 sales
  • Flat or maisonette £415,000 23 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 SW20 9. 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 SW20 9

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.

SW20 9AASW20 9ABSW20 9ADSW20 9AESW20 9AFSW20 9AGSW20 9AHSW20 9AJSW20 9ANSW20 9APSW20 9AQSW20 9ARSW20 9ASSW20 9ATSW20 9AUSW20 9AWSW20 9AXSW20 9AYSW20 9AZSW20 9BASW20 9BBSW20 9BDSW20 9BESW20 9BFSW20 9BGSW20 9BHSW20 9BJSW20 9BLSW20 9BNSW20 9BPSW20 9BQSW20 9BSSW20 9BTSW20 9BUSW20 9BWSW20 9BXSW20 9BYSW20 9BZSW20 9DBSW20 9DDSW20 9DFSW20 9DGSW20 9DHSW20 9DJSW20 9DLSW20 9DNSW20 9DPSW20 9DQSW20 9DRSW20 9DSSW20 9DTSW20 9DWSW20 9DXSW20 9DYSW20 9DZSW20 9EASW20 9EBSW20 9EDSW20 9EESW20 9EFSW20 9EGSW20 9ENSW20 9EPSW20 9ERSW20 9ESSW20 9ETSW20 9EUSW20 9EWSW20 9EXSW20 9HASW20 9HBSW20 9HDSW20 9HESW20 9HFSW20 9HGSW20 9HHSW20 9HJSW20 9HLSW20 9HNSW20 9HQSW20 9HUSW20 9HXSW20 9HYSW20 9HZSW20 9JASW20 9JBSW20 9JDSW20 9JESW20 9JFSW20 9JGSW20 9JHSW20 9JPSW20 9JQSW20 9JRSW20 9JSSW20 9JTSW20 9JUSW20 9JXSW20 9JYSW20 9JZSW20 9LASW20 9LBSW20 9LDSW20 9LESW20 9LLSW20 9LNSW20 9LPSW20 9LRSW20 9LSSW20 9LTSW20 9LUSW20 9LWSW20 9LXSW20 9LYSW20 9LZSW20 9NASW20 9NBSW20 9NESW20 9NFSW20 9NHSW20 9NJSW20 9NLSW20 9NNSW20 9NPSW20 9NQSW20 9NRSW20 9NSSW20 9NTSW20 9NUSW20 9NXSW20 9NYSW20 9NZSW20 9PASW20 9PBSW20 9WDSW20 9ZDSW20 9ZU

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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