CM17 9 postcode sector in the CM17 district

CM17 9 is a sector of the CM17 district: every postcode that starts CM17 9. It has 288 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 CM17 9 sector, by flood risk

Map of every postcode in the CM17 9 sector, by flood risk Of the 288 postcodes in the CM17 9 sector that ONS places, 288 are not on the Environment Agency's at-risk list. 4 postcodes lie beyond the edge and are listed under the map. Places named: Church Langley North & Newhall, Church Langley South & Potter Street. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. M11A1025 CM17 9AA: not on the flood risk listCM17 9AB: not on the flood risk listCM17 9AD: not on the flood risk listCM17 9AE: not on the flood risk listCM17 9AF: not on the flood risk listCM17 9AG: not on the flood risk listCM17 9AH: not on the flood risk listCM17 9AJ: not on the flood risk listCM17 9AL: not on the flood risk listCM17 9AN: not on the flood risk listCM17 9AP: not on the flood risk listCM17 9AQ: not on the flood risk listCM17 9AR: not on the flood risk listCM17 9AS: not on the flood risk listCM17 9AT: not on the flood risk listCM17 9AU: not on the flood risk listCM17 9AW: not on the flood risk listCM17 9AX: not on the flood risk listCM17 9AY: not on the flood risk listCM17 9AZ: not on the flood risk listCM17 9BA: not on the flood risk listCM17 9BB: not on the flood risk listCM17 9BD: not on the flood risk listCM17 9BE: not on the flood risk listCM17 9BF: not on the flood risk listCM17 9BG: not on the flood risk listCM17 9BJ: not on the flood risk listCM17 9BL: not on the flood risk listCM17 9BN: not on the flood risk listCM17 9BP: not on the flood risk listCM17 9BS: not on the flood risk listCM17 9BT: not on the flood risk listCM17 9BU: not on the flood risk listCM17 9BW: not on the flood risk listCM17 9BX: not on the flood risk listCM17 9BY: not on the flood risk listCM17 9BZ: not on the flood risk listCM17 9DA: not on the flood risk listCM17 9DB: not on the flood risk listCM17 9DD: not on the flood risk listCM17 9DE: not on the flood risk listCM17 9DF: not on the flood risk listCM17 9DG: not on the flood risk listCM17 9DH: not on the flood risk listCM17 9DJ: not on the flood risk listCM17 9DP: not on the flood risk listCM17 9DQ: not on the flood risk listCM17 9DR: not on the flood risk listCM17 9DS: not on the flood risk listCM17 9DZ: not on the flood risk listCM17 9EA: not on the flood risk listCM17 9EG: not on the flood risk listCM17 9EH: not on the flood risk listCM17 9EJ: not on the flood risk listCM17 9EL: not on the flood risk listCM17 9EP: not on the flood risk listCM17 9EQ: not on the flood risk listCM17 9ER: not on the flood risk listCM17 9ES: not on the flood risk listCM17 9ET: not on the flood risk listCM17 9EU: not on the flood risk listCM17 9EW: not on the flood risk listCM17 9EX: not on the flood risk listCM17 9EY: not on the flood risk listCM17 9EZ: not on the flood risk listCM17 9FA: not on the flood risk listCM17 9FD: not on the flood risk listCM17 9FF: not on the flood risk listCM17 9FG: not on the flood risk listCM17 9FH: not on the flood risk listCM17 9FJ: not on the flood risk listCM17 9FL: not on the flood risk listCM17 9FN: not on the flood risk listCM17 9FQ: not on the flood risk listCM17 9FR: not on the flood risk listCM17 9FS: not on the flood risk listCM17 9FT: not on the flood risk listCM17 9FU: not on the flood risk listCM17 9FW: not on the flood risk listCM17 9FY: not on the flood risk listCM17 9GB: not on the flood risk listCM17 9GD: not on the flood risk listCM17 9GE: not on the flood risk listCM17 9GF: not on the flood risk listCM17 9GG: not on the flood risk listCM17 9GH: not on the flood risk listCM17 9GJ: not on the flood risk listCM17 9GL: not on the flood risk listCM17 9GN: not on the flood risk listCM17 9GP: not on the flood risk listCM17 9GQ: not on the flood risk listCM17 9GR: not on the flood risk listCM17 9GS: not on the flood risk listCM17 9GT: not on the flood risk listCM17 9GU: not on the flood risk listCM17 9GW: not on the flood risk listCM17 9GX: not on the flood risk listCM17 9GY: not on the flood risk listCM17 9GZ: not on the flood risk listCM17 9HA: not on the flood risk listCM17 9HB: not on the flood risk listCM17 9HD: not on the flood risk listCM17 9HE: not on the flood risk listCM17 9HF: not on the flood risk listCM17 9HG: not on the flood risk listCM17 9HH: not on the flood risk listCM17 9HJ: not on the flood risk listCM17 9HL: not on the flood risk listCM17 9HN: not on the flood risk listCM17 9HP: not on the flood risk listCM17 9HQ: not on the flood risk listCM17 9HR: not on the flood risk listCM17 9HS: not on the flood risk listCM17 9HT: not on the flood risk listCM17 9HU: not on the flood risk listCM17 9HW: not on the flood risk listCM17 9HX: not on the flood risk listCM17 9HY: not on the flood risk listCM17 9HZ: not on the flood risk listCM17 9JA: not on the flood risk listCM17 9JB: not on the flood risk listCM17 9JD: not on the flood risk listCM17 9JE: not on the flood risk listCM17 9JF: not on the flood risk listCM17 9JG: not on the flood risk listCM17 9JH: not on the flood risk listCM17 9JJ: not on the flood risk listCM17 9JL: not on the flood risk listCM17 9JN: not on the flood risk listCM17 9JP: not on the flood risk listCM17 9JQ: not on the flood risk listCM17 9JS: not on the flood risk listCM17 9JT: not on the flood risk listCM17 9JU: not on the flood risk listCM17 9JW: not on the flood risk listCM17 9JX: not on the flood risk listCM17 9JY: not on the flood risk listCM17 9JZ: not on the flood risk listCM17 9LA: not on the flood risk listCM17 9LB: not on the flood risk listCM17 9LE: not on the flood risk listCM17 9LF: not on the flood risk listCM17 9LG: not on the flood risk listCM17 9LL: not on the flood risk listCM17 9LN: not on the flood risk listCM17 9LQ: not on the flood risk listCM17 9LR: not on the flood risk listCM17 9LS: not on the flood risk listCM17 9LU: not on the flood risk listCM17 9LW: not on the flood risk listCM17 9LX: not on the flood risk listCM17 9LZ: not on the flood risk listCM17 9NA: not on the flood risk listCM17 9NB: not on the flood risk listCM17 9ND: not on the flood risk listCM17 9NE: not on the flood risk listCM17 9NF: not on the flood risk listCM17 9NG: not on the flood risk listCM17 9NJ: not on the flood risk listCM17 9NL: not on the flood risk listCM17 9NN: not on the flood risk listCM17 9NP: not on the flood risk listCM17 9NQ: not on the flood risk listCM17 9NR: not on the flood risk listCM17 9NS: not on the flood risk listCM17 9NT: not on the flood risk listCM17 9NU: not on the flood risk listCM17 9NW: not on the flood risk listCM17 9NY: not on the flood risk listCM17 9NZ: not on the flood risk listCM17 9PA: not on the flood risk listCM17 9PB: not on the flood risk listCM17 9PD: not on the flood risk listCM17 9PE: not on the flood risk listCM17 9PF: not on the flood risk listCM17 9PG: not on the flood risk listCM17 9PH: not on the flood risk listCM17 9PJ: not on the flood risk listCM17 9PL: not on the flood risk listCM17 9PN: not on the flood risk listCM17 9PP: not on the flood risk listCM17 9PQ: not on the flood risk listCM17 9PR: not on the flood risk listCM17 9PS: not on the flood risk listCM17 9PT: not on the flood risk listCM17 9PU: not on the flood risk listCM17 9PW: not on the flood risk listCM17 9PX: not on the flood risk listCM17 9PY: not on the flood risk listCM17 9PZ: not on the flood risk listCM17 9QA: not on the flood risk listCM17 9QB: not on the flood risk listCM17 9QE: not on the flood risk listCM17 9QF: not on the flood risk listCM17 9QG: not on the flood risk listCM17 9QH: not on the flood risk listCM17 9QJ: not on the flood risk listCM17 9QL: not on the flood risk listCM17 9QN: not on the flood risk listCM17 9QP: not on the flood risk listCM17 9QQ: not on the flood risk listCM17 9QR: not on the flood risk listCM17 9QS: not on the flood risk listCM17 9QT: not on the flood risk listCM17 9QU: not on the flood risk listCM17 9QW: not on the flood risk listCM17 9QX: not on the flood risk listCM17 9QY: not on the flood risk listCM17 9RA: not on the flood risk listCM17 9RB: not on the flood risk listCM17 9RD: not on the flood risk listCM17 9RG: not on the flood risk listCM17 9RH: not on the flood risk listCM17 9RL: not on the flood risk listCM17 9RR: not on the flood risk listCM17 9RS: not on the flood risk listCM17 9RT: not on the flood risk listCM17 9RU: not on the flood risk listCM17 9RX: not on the flood risk listCM17 9RY: not on the flood risk listCM17 9RZ: not on the flood risk listCM17 9SA: not on the flood risk listCM17 9SB: not on the flood risk listCM17 9SD: not on the flood risk listCM17 9SE: not on the flood risk listCM17 9SF: not on the flood risk listCM17 9SG: not on the flood risk listCM17 9SH: not on the flood risk listCM17 9SL: not on the flood risk listCM17 9SN: not on the flood risk listCM17 9SP: not on the flood risk listCM17 9SQ: not on the flood risk listCM17 9SR: not on the flood risk listCM17 9SS: not on the flood risk listCM17 9ST: not on the flood risk listCM17 9SW: not on the flood risk listCM17 9SX: not on the flood risk listCM17 9SY: not on the flood risk listCM17 9SZ: not on the flood risk listCM17 9TA: not on the flood risk listCM17 9TB: not on the flood risk listCM17 9TD: not on the flood risk listCM17 9TE: not on the flood risk listCM17 9TF: not on the flood risk listCM17 9TG: not on the flood risk listCM17 9TH: not on the flood risk listCM17 9TJ: not on the flood risk listCM17 9TL: not on the flood risk listCM17 9TN: not on the flood risk listCM17 9TP: not on the flood risk listCM17 9TQ: not on the flood risk listCM17 9TR: not on the flood risk listCM17 9TS: not on the flood risk listCM17 9TT: not on the flood risk listCM17 9TU: not on the flood risk listCM17 9TW: not on the flood risk listCM17 9TX: not on the flood risk listCM17 9TZ: not on the flood risk listCM17 9UB: not on the flood risk listCM17 9UD: not on the flood risk listCM17 9UE: not on the flood risk listCM17 9UF: not on the flood risk listCM17 9UG: not on the flood risk listCM17 9UH: not on the flood risk listCM17 9UJ: not on the flood risk listCM17 9UL: not on the flood risk listCM17 9UN: not on the flood risk listCM17 9UP: not on the flood risk listCM17 9UQ: not on the flood risk listCM17 9UR: not on the flood risk listCM17 9US: not on the flood risk listCM17 9UU: not on the flood risk listCM17 9UW: not on the flood risk listCM17 9UX: not on the flood risk listCM17 9UY: not on the flood risk listCM17 9WG: not on the flood risk listCM17 9WH: not on the flood risk listCM17 9XA: not on the flood risk listCM17 9XB: not on the flood risk listCM17 9XD: not on the flood risk listCM17 9XE: not on the flood risk listCM17 9XH: not on the flood risk listCM17 9XP: not on the flood risk list Church Langley North & NewhallChurch Langley South & Potter Street Map of every postcode in the CM17 9 sector, by flood risk Of the 288 postcodes in the CM17 9 sector that ONS places, 288 are not on the Environment Agency's at-risk list. 4 postcodes lie beyond the edge and are listed under the map. Places named: Church Langley North & Newhall, Church Langley South & Potter Street. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A414 Church Langley North & NewhallChurch Langley South & Potter Street
  • 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: 288

Of the 288 postcodes in the CM17 9 sector that ONS places, 288 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

4 further out, not drawn

These postcodes lie well apart from the rest, so the map is drawn without them to show the rest closer; they are in every count.

CM17 9HPCM17 9JNCM17 9LDCM17 9LH

What do homes sell for in CM17 9?

Homes in CM17 9 sold for a typical £385,000 in the 12 months to August 2026, across 211 sales, down 1.8% on the 12 months before, HM Land Registry's figures show.

£385,000 typical price, the 12 months to August 2026
£392,000 12 months to August 2025
▼ down 1.8% on the 12 months before
  • Detached £520,000 65 sales
  • Semi-detached £425,000 27 sales
  • Terraced £350,000 83 sales
  • Flat or maisonette £235,000 36 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 CM17 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 CM17 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.

CM17 9AACM17 9ABCM17 9ADCM17 9AECM17 9AFCM17 9AGCM17 9AHCM17 9AJCM17 9ALCM17 9ANCM17 9APCM17 9AQCM17 9ARCM17 9ASCM17 9ATCM17 9AUCM17 9AWCM17 9AXCM17 9AYCM17 9AZCM17 9BACM17 9BBCM17 9BDCM17 9BECM17 9BFCM17 9BGCM17 9BJCM17 9BLCM17 9BNCM17 9BPCM17 9BSCM17 9BTCM17 9BUCM17 9BWCM17 9BXCM17 9BYCM17 9BZCM17 9DACM17 9DBCM17 9DDCM17 9DECM17 9DFCM17 9DGCM17 9DHCM17 9DJCM17 9DPCM17 9DQCM17 9DRCM17 9DSCM17 9DZCM17 9EACM17 9EGCM17 9EHCM17 9EJCM17 9ELCM17 9EPCM17 9EQCM17 9ERCM17 9ESCM17 9ETCM17 9EUCM17 9EWCM17 9EXCM17 9EYCM17 9EZCM17 9FACM17 9FDCM17 9FFCM17 9FGCM17 9FHCM17 9FJCM17 9FLCM17 9FNCM17 9FQCM17 9FRCM17 9FSCM17 9FTCM17 9FUCM17 9FWCM17 9FYCM17 9GBCM17 9GDCM17 9GECM17 9GFCM17 9GGCM17 9GHCM17 9GJCM17 9GLCM17 9GNCM17 9GPCM17 9GQCM17 9GRCM17 9GSCM17 9GTCM17 9GUCM17 9GWCM17 9GXCM17 9GYCM17 9GZCM17 9HACM17 9HBCM17 9HDCM17 9HECM17 9HFCM17 9HGCM17 9HHCM17 9HJCM17 9HLCM17 9HNCM17 9HPCM17 9HQCM17 9HRCM17 9HSCM17 9HTCM17 9HUCM17 9HWCM17 9HXCM17 9HYCM17 9HZCM17 9JACM17 9JBCM17 9JDCM17 9JECM17 9JFCM17 9JGCM17 9JHCM17 9JJCM17 9JLCM17 9JNCM17 9JPCM17 9JQCM17 9JRCM17 9JSCM17 9JTCM17 9JUCM17 9JWCM17 9JXCM17 9JYCM17 9JZCM17 9LACM17 9LBCM17 9LDCM17 9LECM17 9LFCM17 9LGCM17 9LHCM17 9LJCM17 9LLCM17 9LNCM17 9LQCM17 9LRCM17 9LSCM17 9LUCM17 9LWCM17 9LXCM17 9LZCM17 9NACM17 9NBCM17 9NDCM17 9NECM17 9NFCM17 9NGCM17 9NJCM17 9NLCM17 9NNCM17 9NPCM17 9NQCM17 9NRCM17 9NSCM17 9NTCM17 9NUCM17 9NWCM17 9NYCM17 9NZCM17 9PACM17 9PBCM17 9PDCM17 9PECM17 9PFCM17 9PGCM17 9PHCM17 9PJCM17 9PLCM17 9PNCM17 9PPCM17 9PQCM17 9PRCM17 9PSCM17 9PTCM17 9PUCM17 9PWCM17 9PXCM17 9PYCM17 9PZCM17 9QACM17 9QBCM17 9QECM17 9QFCM17 9QGCM17 9QHCM17 9QJCM17 9QLCM17 9QNCM17 9QPCM17 9QQCM17 9QRCM17 9QSCM17 9QTCM17 9QUCM17 9QWCM17 9QXCM17 9QYCM17 9RACM17 9RBCM17 9RDCM17 9RGCM17 9RHCM17 9RLCM17 9RRCM17 9RSCM17 9RTCM17 9RUCM17 9RXCM17 9RYCM17 9RZCM17 9SACM17 9SBCM17 9SDCM17 9SECM17 9SFCM17 9SGCM17 9SHCM17 9SJCM17 9SLCM17 9SNCM17 9SPCM17 9SQCM17 9SRCM17 9SSCM17 9STCM17 9SWCM17 9SXCM17 9SYCM17 9SZCM17 9TACM17 9TBCM17 9TDCM17 9TECM17 9TFCM17 9TGCM17 9THCM17 9TJCM17 9TLCM17 9TNCM17 9TPCM17 9TQCM17 9TRCM17 9TSCM17 9TTCM17 9TUCM17 9TWCM17 9TXCM17 9TZCM17 9UBCM17 9UDCM17 9UECM17 9UFCM17 9UGCM17 9UHCM17 9UJCM17 9ULCM17 9UNCM17 9UPCM17 9UQCM17 9URCM17 9USCM17 9UUCM17 9UWCM17 9UXCM17 9UYCM17 9WGCM17 9WHCM17 9XACM17 9XBCM17 9XDCM17 9XECM17 9XHCM17 9XP

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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