CM9 5 postcode sector in the CM9 district

CM9 5 is a sector of the CM9 district: every postcode that starts CM9 5. It has 124 postcodes in use, 11 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 CM9 5 sector, by flood risk

Map of every postcode in the CM9 5 sector, by flood risk Of the 124 postcodes in the CM9 5 sector that ONS places, 6 have a home or business at high risk, 2 are at low risk at worst and 116 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Maldon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. CM9 5AD: not on the flood risk listCM9 5AF: not on the flood risk listCM9 5AG: not on the flood risk listCM9 5AH: not on the flood risk listCM9 5AJ: not on the flood risk listCM9 5AL: not on the flood risk listCM9 5BA: not on the flood risk listCM9 5BF: not on the flood risk listCM9 5BQ: not on the flood risk listCM9 5BS: not on the flood risk listCM9 5BU: not on the flood risk listCM9 5BW: not on the flood risk listCM9 5BX: not on the flood risk listCM9 5BY: not on the flood risk listCM9 5BZ: not on the flood risk listCM9 5DA: not on the flood risk listCM9 5DB: not on the flood risk listCM9 5DD: not on the flood risk listCM9 5DE: not on the flood risk listCM9 5DF: not on the flood risk listCM9 5DG: not on the flood risk listCM9 5DH: not on the flood risk listCM9 5DJ: not on the flood risk listCM9 5DL: not on the flood risk listCM9 5DN: not on the flood risk listCM9 5DP: not on the flood risk listCM9 5DQ: not on the flood risk listCM9 5DR: not on the flood risk listCM9 5DU: not on the flood risk listCM9 5DW: not on the flood risk listCM9 5DX: not on the flood risk listCM9 5DY: not on the flood risk listCM9 5DZ: not on the flood risk listCM9 5EA: not on the flood risk listCM9 5EB: not on the flood risk listCM9 5ED: not on the flood risk listCM9 5EE: not on the flood risk listCM9 5EF: not on the flood risk listCM9 5EG: not on the flood risk listCM9 5EH: not on the flood risk listCM9 5EJ: not on the flood risk listCM9 5EN: not on the flood risk listCM9 5EP: not on the flood risk listCM9 5ET: not on the flood risk listCM9 5EW: not on the flood risk listCM9 5FJ: not on the flood risk listCM9 5FP: not on the flood risk listCM9 5FT: not on the flood risk listCM9 5FW: not on the flood risk listCM9 5FX: not on the flood risk listCM9 5GP: not on the flood risk listCM9 5GZ: not on the flood risk listCM9 5HA: not on the flood risk listCM9 5HB: not on the flood risk listCM9 5HD: not on the flood risk listCM9 5HE: not on the flood risk listCM9 5HF: not on the flood risk listCM9 5HH: not on the flood risk listCM9 5HJ: not on the flood risk listCM9 5HP: not on the flood risk listCM9 5HQ: not on the flood risk listCM9 5HR: not on the flood risk listCM9 5HS: not on the flood risk listCM9 5HW: not on the flood risk listCM9 5HX: not on the flood risk listCM9 5HY: not on the flood risk listCM9 5HZ: not on the flood risk listCM9 5JA: not on the flood risk listCM9 5JB: not on the flood risk listCM9 5JD: not on the flood risk listCM9 5JE: not on the flood risk listCM9 5JF: not on the flood risk listCM9 5JG: not on the flood risk listCM9 5JH: not on the flood risk listCM9 5JJ: not on the flood risk listCM9 5JL: not on the flood risk listCM9 5JN: not on the flood risk listCM9 5JP: not on the flood risk listCM9 5JR: not on the flood risk listCM9 5JS: not on the flood risk listCM9 5JT: not on the flood risk listCM9 5JU: not on the flood risk listCM9 5JW: not on the flood risk listCM9 5JX: not on the flood risk listCM9 5JY: not on the flood risk listCM9 5JZ: not on the flood risk listCM9 5LA: not on the flood risk listCM9 5LB: not on the flood risk listCM9 5LD: not on the flood risk listCM9 5LE: not on the flood risk listCM9 5LG: not on the flood risk listCM9 5LH: not on the flood risk listCM9 5LJ: not on the flood risk listCM9 5NA: not on the flood risk listCM9 5NB: not on the flood risk listCM9 5ND: not on the flood risk listCM9 5NY: not on the flood risk listCM9 5PB: not on the flood risk listCM9 5PE: not on the flood risk listCM9 5PF: not on the flood risk listCM9 5PJ: not on the flood risk listCM9 5PN: not on the flood risk listCM9 5PS: not on the flood risk listCM9 5PT: not on the flood risk listCM9 5QA: not on the flood risk listCM9 5QF: not on the flood risk listCM9 5QH: not on the flood risk listCM9 5QJ: not on the flood risk listCM9 5QP: not on the flood risk listCM9 5QR: not on the flood risk listCM9 5QW: not on the flood risk listCM9 5QX: not on the flood risk listCM9 5RU: not on the flood risk listCM9 5UY: not on the flood risk listCM9 5ZY: not on the flood risk listCM9 5GU: low flood risk at worstCM9 5HG: high flood riskCM9 5HL: high flood riskCM9 5HN: high flood riskCM9 5HT: high flood riskCM9 5JQ: high flood riskCM9 5UR: high flood risk Maldon Map of every postcode in the CM9 5 sector, by flood risk Of the 124 postcodes in the CM9 5 sector that ONS places, 6 have a home or business at high risk, 2 are at low risk at worst and 116 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Maldon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Maldon
  • A home or business at high risk: 6
  • At medium risk at worst: 0
  • At low risk at worst: 2
  • At very low risk only: 0
  • Not on the at-risk list: 116

Of the 124 postcodes in the CM9 5 sector that ONS places, 6 have a home or business at high risk, 2 are at low risk at worst and 116 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.

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.

CM9 5HN26 at high riskCM9 5JQ6 at high riskCM9 5HT6 at high riskCM9 5HL4 at high riskCM9 5HG3 at high riskCM9 5UR3 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.

CM9 5FA

What do homes sell for in CM9 5?

Homes in CM9 5 sold for a typical £292,000 in the 12 months to August 2026, across 55 sales, up 0.7% on the 12 months before, HM Land Registry's figures show.

£292,000 typical price, the 12 months to August 2026
£290,000 12 months to August 2025
▲ up 0.7% on the 12 months before
  • Detached £450,000 5 sales
  • Semi-detached £326,000 21 sales
  • Terraced £274,000 18 sales
  • Flat or maisonette £220,000 11 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 CM9 5. 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 CM9 5

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.

CM9 5ADCM9 5AECM9 5AFCM9 5AGCM9 5AHCM9 5AJCM9 5ALCM9 5BACM9 5BFCM9 5BQCM9 5BSCM9 5BUCM9 5BWCM9 5BXCM9 5BYCM9 5BZCM9 5DACM9 5DBCM9 5DDCM9 5DECM9 5DFCM9 5DGCM9 5DHCM9 5DJCM9 5DLCM9 5DNCM9 5DPCM9 5DQCM9 5DRCM9 5DUCM9 5DWCM9 5DXCM9 5DYCM9 5DZCM9 5EACM9 5EBCM9 5EDCM9 5EECM9 5EFCM9 5EGCM9 5EHCM9 5EJCM9 5ENCM9 5EPCM9 5ETCM9 5EWCM9 5FACM9 5FJCM9 5FPCM9 5FTCM9 5FWCM9 5FXCM9 5GPCM9 5GUCM9 5GZCM9 5HACM9 5HBCM9 5HDCM9 5HECM9 5HFCM9 5HGCM9 5HHCM9 5HJCM9 5HLCM9 5HNCM9 5HPCM9 5HQCM9 5HRCM9 5HSCM9 5HTCM9 5HWCM9 5HXCM9 5HYCM9 5HZCM9 5JACM9 5JBCM9 5JDCM9 5JECM9 5JFCM9 5JGCM9 5JHCM9 5JJCM9 5JLCM9 5JNCM9 5JPCM9 5JQCM9 5JRCM9 5JSCM9 5JTCM9 5JUCM9 5JWCM9 5JXCM9 5JYCM9 5JZCM9 5LACM9 5LBCM9 5LDCM9 5LECM9 5LGCM9 5LHCM9 5LJCM9 5NACM9 5NBCM9 5NDCM9 5NYCM9 5PBCM9 5PECM9 5PFCM9 5PJCM9 5PNCM9 5PSCM9 5PTCM9 5QACM9 5QFCM9 5QHCM9 5QJCM9 5QPCM9 5QRCM9 5QWCM9 5QXCM9 5RUCM9 5URCM9 5UYCM9 5ZY

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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