CM3 4 postcode sector in the CM3 district

CM3 4 is a sector of the CM3 district: every postcode that starts CM3 4. It has 244 postcodes in use.

Not sure what a sector is? UK postcode format explained.

Every postcode in the CM3 4 sector, by flood risk

Map of every postcode in the CM3 4 sector, by flood risk Of the 244 postcodes in the CM3 4 sector that ONS places, 4 have a home or business at high risk, 2 are at medium risk at worst, 7 are at low risk at worst and 231 are not on the Environment Agency's at-risk list. Places named: Chelmsford, South Woodham Ferrers, Danbury, Galleywood. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A130A12A138A132 CM3 4AA: not on the flood risk listCM3 4AB: not on the flood risk listCM3 4AE: not on the flood risk listCM3 4AF: not on the flood risk listCM3 4AG: not on the flood risk listCM3 4AJ: not on the flood risk listCM3 4AL: not on the flood risk listCM3 4AN: not on the flood risk listCM3 4AP: not on the flood risk listCM3 4AQ: not on the flood risk listCM3 4AR: not on the flood risk listCM3 4AT: not on the flood risk listCM3 4AU: not on the flood risk listCM3 4AW: not on the flood risk listCM3 4AX: not on the flood risk listCM3 4AY: not on the flood risk listCM3 4AZ: not on the flood risk listCM3 4BA: not on the flood risk listCM3 4BB: not on the flood risk listCM3 4BD: not on the flood risk listCM3 4BH: not on the flood risk listCM3 4BJ: not on the flood risk listCM3 4BL: not on the flood risk listCM3 4BN: not on the flood risk listCM3 4BP: not on the flood risk listCM3 4BW: not on the flood risk listCM3 4BX: not on the flood risk listCM3 4BY: not on the flood risk listCM3 4BZ: not on the flood risk listCM3 4DA: not on the flood risk listCM3 4DB: not on the flood risk listCM3 4DD: not on the flood risk listCM3 4DE: not on the flood risk listCM3 4DH: not on the flood risk listCM3 4DJ: not on the flood risk listCM3 4DL: not on the flood risk listCM3 4DN: not on the flood risk listCM3 4DP: not on the flood risk listCM3 4DR: not on the flood risk listCM3 4DS: not on the flood risk listCM3 4DT: not on the flood risk listCM3 4DU: not on the flood risk listCM3 4DW: not on the flood risk listCM3 4DX: not on the flood risk listCM3 4DY: not on the flood risk listCM3 4DZ: not on the flood risk listCM3 4EB: not on the flood risk listCM3 4ED: not on the flood risk listCM3 4EE: not on the flood risk listCM3 4EF: not on the flood risk listCM3 4EG: not on the flood risk listCM3 4EH: not on the flood risk listCM3 4EJ: not on the flood risk listCM3 4EP: not on the flood risk listCM3 4EQ: not on the flood risk listCM3 4ER: not on the flood risk listCM3 4ET: not on the flood risk listCM3 4EU: not on the flood risk listCM3 4EX: not on the flood risk listCM3 4EY: not on the flood risk listCM3 4EZ: not on the flood risk listCM3 4FA: not on the flood risk listCM3 4FG: not on the flood risk listCM3 4FH: not on the flood risk listCM3 4FJ: not on the flood risk listCM3 4FP: not on the flood risk listCM3 4FQ: not on the flood risk listCM3 4FS: not on the flood risk listCM3 4HA: not on the flood risk listCM3 4HB: not on the flood risk listCM3 4HD: not on the flood risk listCM3 4HF: not on the flood risk listCM3 4HG: not on the flood risk listCM3 4HH: not on the flood risk listCM3 4HJ: not on the flood risk listCM3 4HL: not on the flood risk listCM3 4HN: not on the flood risk listCM3 4HP: not on the flood risk listCM3 4HQ: not on the flood risk listCM3 4HT: not on the flood risk listCM3 4HU: not on the flood risk listCM3 4HW: not on the flood risk listCM3 4HX: not on the flood risk listCM3 4HY: not on the flood risk listCM3 4HZ: not on the flood risk listCM3 4JA: not on the flood risk listCM3 4JB: not on the flood risk listCM3 4JE: not on the flood risk listCM3 4JF: not on the flood risk listCM3 4JG: not on the flood risk listCM3 4JH: not on the flood risk listCM3 4JJ: not on the flood risk listCM3 4JL: not on the flood risk listCM3 4JN: not on the flood risk listCM3 4JP: not on the flood risk listCM3 4JQ: not on the flood risk listCM3 4JR: not on the flood risk listCM3 4JS: not on the flood risk listCM3 4JW: not on the flood risk listCM3 4LA: not on the flood risk listCM3 4LB: not on the flood risk listCM3 4LD: not on the flood risk listCM3 4LE: not on the flood risk listCM3 4LF: not on the flood risk listCM3 4LH: not on the flood risk listCM3 4LJ: not on the flood risk listCM3 4LL: not on the flood risk listCM3 4LN: not on the flood risk listCM3 4LP: not on the flood risk listCM3 4LR: not on the flood risk listCM3 4LT: not on the flood risk listCM3 4LU: not on the flood risk listCM3 4LW: not on the flood risk listCM3 4LX: not on the flood risk listCM3 4LZ: not on the flood risk listCM3 4NA: not on the flood risk listCM3 4NG: not on the flood risk listCM3 4NL: not on the flood risk listCM3 4NN: not on the flood risk listCM3 4NP: not on the flood risk listCM3 4NQ: not on the flood risk listCM3 4NS: not on the flood risk listCM3 4NT: not on the flood risk listCM3 4NU: not on the flood risk listCM3 4NW: not on the flood risk listCM3 4NX: not on the flood risk listCM3 4NY: not on the flood risk listCM3 4NZ: not on the flood risk listCM3 4PB: not on the flood risk listCM3 4PD: not on the flood risk listCM3 4PE: not on the flood risk listCM3 4PF: not on the flood risk listCM3 4PG: not on the flood risk listCM3 4PH: not on the flood risk listCM3 4PJ: not on the flood risk listCM3 4PL: not on the flood risk listCM3 4PN: not on the flood risk listCM3 4PP: not on the flood risk listCM3 4PQ: not on the flood risk listCM3 4PR: not on the flood risk listCM3 4PT: not on the flood risk listCM3 4QB: not on the flood risk listCM3 4QE: not on the flood risk listCM3 4QH: not on the flood risk listCM3 4QJ: not on the flood risk listCM3 4QL: not on the flood risk listCM3 4QN: not on the flood risk listCM3 4QP: not on the flood risk listCM3 4QR: not on the flood risk listCM3 4QS: not on the flood risk listCM3 4QT: not on the flood risk listCM3 4QU: not on the flood risk listCM3 4QW: not on the flood risk listCM3 4QX: not on the flood risk listCM3 4QY: not on the flood risk listCM3 4QZ: not on the flood risk listCM3 4RA: not on the flood risk listCM3 4RB: not on the flood risk listCM3 4RD: not on the flood risk listCM3 4RE: not on the flood risk listCM3 4RF: not on the flood risk listCM3 4RH: not on the flood risk listCM3 4RJ: not on the flood risk listCM3 4RL: not on the flood risk listCM3 4RN: not on the flood risk listCM3 4RP: not on the flood risk listCM3 4RQ: not on the flood risk listCM3 4RS: not on the flood risk listCM3 4RT: not on the flood risk listCM3 4RU: not on the flood risk listCM3 4RX: not on the flood risk listCM3 4RY: not on the flood risk listCM3 4RZ: not on the flood risk listCM3 4SA: not on the flood risk listCM3 4SB: not on the flood risk listCM3 4SD: not on the flood risk listCM3 4SE: not on the flood risk listCM3 4SF: not on the flood risk listCM3 4SG: not on the flood risk listCM3 4SH: not on the flood risk listCM3 4SN: not on the flood risk listCM3 4SP: not on the flood risk listCM3 4SQ: not on the flood risk listCM3 4SR: not on the flood risk listCM3 4SS: not on the flood risk listCM3 4ST: not on the flood risk listCM3 4SU: not on the flood risk listCM3 4SX: not on the flood risk listCM3 4SY: not on the flood risk listCM3 4SZ: not on the flood risk listCM3 4TA: not on the flood risk listCM3 4TB: not on the flood risk listCM3 4TD: not on the flood risk listCM3 4TE: not on the flood risk listCM3 4TG: not on the flood risk listCM3 4TH: not on the flood risk listCM3 4TJ: not on the flood risk listCM3 4TL: not on the flood risk listCM3 4TN: not on the flood risk listCM3 4TP: not on the flood risk listCM3 4TQ: not on the flood risk listCM3 4TR: not on the flood risk listCM3 4TS: not on the flood risk listCM3 4TW: not on the flood risk listCM3 4UE: not on the flood risk listCM3 4UJ: not on the flood risk listCM3 4XA: not on the flood risk listCM3 4XB: not on the flood risk listCM3 4XD: not on the flood risk listCM3 4XG: not on the flood risk listCM3 4XL: not on the flood risk listCM3 4XW: not on the flood risk listCM3 4XY: not on the flood risk listCM3 4BE: low flood risk at worstCM3 4BG: low flood risk at worstCM3 4LS: low flood risk at worstCM3 4NB: low flood risk at worstCM3 4ND: low flood risk at worstCM3 4NE: low flood risk at worstCM3 4XH: low flood risk at worstCM3 4BU: medium flood risk at worstCM3 4ES: medium flood risk at worstCM3 4BQ: high flood riskCM3 4BS: high flood riskCM3 4BT: high flood riskCM3 4FL: high flood risk ChelmsfordSouth Woodham FerrersDanburyGalleywood Map of every postcode in the CM3 4 sector, by flood risk Of the 244 postcodes in the CM3 4 sector that ONS places, 4 have a home or business at high risk, 2 are at medium risk at worst, 7 are at low risk at worst and 231 are not on the Environment Agency's at-risk list. Places named: Chelmsford, South Woodham Ferrers, Danbury. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A130A138 ChelmsfordSouth Woodham FerrersDanbury
  • A home or business at high risk: 4
  • At medium risk at worst: 2
  • At low risk at worst: 7
  • At very low risk only: 0
  • Not on the at-risk list: 231

Of the 244 postcodes in the CM3 4 sector that ONS places, 4 have a home or business at high risk, 2 are at medium risk at worst, 7 are at low risk at worst and 231 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.

CM3 4BS7 at high riskCM3 4BQ2 at high riskCM3 4FL2 at high riskCM3 4BT1 at high risk

What do homes sell for in CM3 4?

Homes in CM3 4 sold for a typical £552,500 in the 12 months to August 2026, across 92 sales, down 2.2% on the 12 months before, HM Land Registry's figures show.

£552,500 typical price, the 12 months to August 2026
£565,000 12 months to August 2025
▼ down 2.2% on the 12 months before
  • Detached £650,000 57 sales
  • Semi-detached £437,500 24 sales
  • Terraced £373,000 8 sales
  • Flat or maisonette 3 sales, too few to price

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 CM3 4. 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 CM3 4

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.

CM3 4AACM3 4ABCM3 4AECM3 4AFCM3 4AGCM3 4AJCM3 4ALCM3 4ANCM3 4APCM3 4AQCM3 4ARCM3 4ASCM3 4ATCM3 4AUCM3 4AWCM3 4AXCM3 4AYCM3 4AZCM3 4BACM3 4BBCM3 4BDCM3 4BECM3 4BGCM3 4BHCM3 4BJCM3 4BLCM3 4BNCM3 4BPCM3 4BQCM3 4BSCM3 4BTCM3 4BUCM3 4BWCM3 4BXCM3 4BYCM3 4BZCM3 4DACM3 4DBCM3 4DDCM3 4DECM3 4DHCM3 4DJCM3 4DLCM3 4DNCM3 4DPCM3 4DRCM3 4DSCM3 4DTCM3 4DUCM3 4DWCM3 4DXCM3 4DYCM3 4DZCM3 4EBCM3 4EDCM3 4EECM3 4EFCM3 4EGCM3 4EHCM3 4EJCM3 4EPCM3 4EQCM3 4ERCM3 4ESCM3 4ETCM3 4EUCM3 4EXCM3 4EYCM3 4EZCM3 4FACM3 4FGCM3 4FHCM3 4FJCM3 4FLCM3 4FPCM3 4FQCM3 4FSCM3 4HACM3 4HBCM3 4HDCM3 4HECM3 4HFCM3 4HGCM3 4HHCM3 4HJCM3 4HLCM3 4HNCM3 4HPCM3 4HQCM3 4HRCM3 4HSCM3 4HTCM3 4HUCM3 4HWCM3 4HXCM3 4HYCM3 4HZCM3 4JACM3 4JBCM3 4JECM3 4JFCM3 4JGCM3 4JHCM3 4JJCM3 4JLCM3 4JNCM3 4JPCM3 4JQCM3 4JRCM3 4JSCM3 4JWCM3 4LACM3 4LBCM3 4LDCM3 4LECM3 4LFCM3 4LHCM3 4LJCM3 4LLCM3 4LNCM3 4LPCM3 4LRCM3 4LSCM3 4LTCM3 4LUCM3 4LWCM3 4LXCM3 4LYCM3 4LZCM3 4NACM3 4NBCM3 4NDCM3 4NECM3 4NFCM3 4NGCM3 4NJCM3 4NLCM3 4NNCM3 4NPCM3 4NQCM3 4NRCM3 4NSCM3 4NTCM3 4NUCM3 4NWCM3 4NXCM3 4NYCM3 4NZCM3 4PBCM3 4PDCM3 4PECM3 4PFCM3 4PGCM3 4PHCM3 4PJCM3 4PLCM3 4PNCM3 4PPCM3 4PQCM3 4PRCM3 4PSCM3 4PTCM3 4PWCM3 4QBCM3 4QECM3 4QFCM3 4QHCM3 4QJCM3 4QLCM3 4QNCM3 4QPCM3 4QQCM3 4QRCM3 4QSCM3 4QTCM3 4QUCM3 4QWCM3 4QXCM3 4QYCM3 4QZCM3 4RACM3 4RBCM3 4RDCM3 4RECM3 4RFCM3 4RGCM3 4RHCM3 4RJCM3 4RLCM3 4RNCM3 4RPCM3 4RQCM3 4RSCM3 4RTCM3 4RUCM3 4RWCM3 4RXCM3 4RYCM3 4RZCM3 4SACM3 4SBCM3 4SDCM3 4SECM3 4SFCM3 4SGCM3 4SHCM3 4SNCM3 4SPCM3 4SQCM3 4SRCM3 4SSCM3 4STCM3 4SUCM3 4SXCM3 4SYCM3 4SZCM3 4TACM3 4TBCM3 4TDCM3 4TECM3 4TFCM3 4TGCM3 4THCM3 4TJCM3 4TLCM3 4TNCM3 4TPCM3 4TQCM3 4TRCM3 4TSCM3 4TWCM3 4UECM3 4UJCM3 4URCM3 4XACM3 4XBCM3 4XDCM3 4XGCM3 4XHCM3 4XLCM3 4XNCM3 4XQCM3 4XWCM3 4XY

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.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.