CM1 4 postcode sector in the CM1 district

CM1 4 is a sector of the CM1 district: every postcode that starts CM1 4. It has 313 postcodes in use, 2 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 CM1 4 sector, by flood risk

Map of every postcode in the CM1 4 sector, by flood risk Of the 313 postcodes in the CM1 4 sector that ONS places, 9 have a home or business at high risk, 1 are at medium risk at worst, 11 are at low risk at worst and 292 are not on the Environment Agency's at-risk list. Places named: Broomfield. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A1099 CM1 4AA: not on the flood risk listCM1 4AB: not on the flood risk listCM1 4AD: not on the flood risk listCM1 4AE: not on the flood risk listCM1 4AF: not on the flood risk listCM1 4AG: not on the flood risk listCM1 4AH: not on the flood risk listCM1 4AJ: not on the flood risk listCM1 4AL: not on the flood risk listCM1 4AN: not on the flood risk listCM1 4AP: not on the flood risk listCM1 4AR: not on the flood risk listCM1 4AS: not on the flood risk listCM1 4AT: not on the flood risk listCM1 4AU: not on the flood risk listCM1 4AW: not on the flood risk listCM1 4AX: not on the flood risk listCM1 4AY: not on the flood risk listCM1 4BB: not on the flood risk listCM1 4BD: not on the flood risk listCM1 4BH: not on the flood risk listCM1 4BJ: not on the flood risk listCM1 4BL: not on the flood risk listCM1 4BN: not on the flood risk listCM1 4BP: not on the flood risk listCM1 4BS: not on the flood risk listCM1 4BT: not on the flood risk listCM1 4BU: not on the flood risk listCM1 4BW: not on the flood risk listCM1 4BX: not on the flood risk listCM1 4BY: not on the flood risk listCM1 4BZ: not on the flood risk listCM1 4DA: not on the flood risk listCM1 4DB: not on the flood risk listCM1 4DD: not on the flood risk listCM1 4DE: not on the flood risk listCM1 4DF: not on the flood risk listCM1 4DG: not on the flood risk listCM1 4DH: not on the flood risk listCM1 4DL: not on the flood risk listCM1 4DN: not on the flood risk listCM1 4DP: not on the flood risk listCM1 4DQ: not on the flood risk listCM1 4DU: not on the flood risk listCM1 4DX: not on the flood risk listCM1 4DY: not on the flood risk listCM1 4DZ: not on the flood risk listCM1 4EA: not on the flood risk listCM1 4EB: not on the flood risk listCM1 4EE: not on the flood risk listCM1 4EF: not on the flood risk listCM1 4EG: not on the flood risk listCM1 4EH: not on the flood risk listCM1 4EL: not on the flood risk listCM1 4EP: not on the flood risk listCM1 4EQ: not on the flood risk listCM1 4ES: not on the flood risk listCM1 4ET: not on the flood risk listCM1 4EX: not on the flood risk listCM1 4EZ: not on the flood risk listCM1 4FD: not on the flood risk listCM1 4FF: not on the flood risk listCM1 4FH: not on the flood risk listCM1 4FJ: not on the flood risk listCM1 4FL: not on the flood risk listCM1 4FN: not on the flood risk listCM1 4FP: not on the flood risk listCM1 4FQ: not on the flood risk listCM1 4FR: not on the flood risk listCM1 4FS: not on the flood risk listCM1 4FT: not on the flood risk listCM1 4FW: not on the flood risk listCM1 4FY: not on the flood risk listCM1 4FZ: not on the flood risk listCM1 4GA: not on the flood risk listCM1 4GD: not on the flood risk listCM1 4GF: not on the flood risk listCM1 4GH: not on the flood risk listCM1 4GJ: not on the flood risk listCM1 4GN: not on the flood risk listCM1 4GP: not on the flood risk listCM1 4GR: not on the flood risk listCM1 4GS: not on the flood risk listCM1 4HE: not on the flood risk listCM1 4HF: not on the flood risk listCM1 4HH: not on the flood risk listCM1 4HJ: not on the flood risk listCM1 4HL: not on the flood risk listCM1 4HN: not on the flood risk listCM1 4HP: not on the flood risk listCM1 4HT: not on the flood risk listCM1 4HW: not on the flood risk listCM1 4HX: not on the flood risk listCM1 4HY: not on the flood risk listCM1 4HZ: not on the flood risk listCM1 4JB: not on the flood risk listCM1 4JD: not on the flood risk listCM1 4JE: not on the flood risk listCM1 4JG: not on the flood risk listCM1 4JH: not on the flood risk listCM1 4JL: not on the flood risk listCM1 4JN: not on the flood risk listCM1 4JP: not on the flood risk listCM1 4JQ: not on the flood risk listCM1 4JR: not on the flood risk listCM1 4JS: not on the flood risk listCM1 4JT: not on the flood risk listCM1 4JU: not on the flood risk listCM1 4JX: not on the flood risk listCM1 4JY: not on the flood risk listCM1 4LB: not on the flood risk listCM1 4LD: not on the flood risk listCM1 4LE: not on the flood risk listCM1 4LF: not on the flood risk listCM1 4LG: not on the flood risk listCM1 4LJ: not on the flood risk listCM1 4LN: not on the flood risk listCM1 4LP: not on the flood risk listCM1 4LQ: not on the flood risk listCM1 4LR: not on the flood risk listCM1 4LS: not on the flood risk listCM1 4LU: not on the flood risk listCM1 4LW: not on the flood risk listCM1 4LX: not on the flood risk listCM1 4LY: not on the flood risk listCM1 4LZ: not on the flood risk listCM1 4NA: not on the flood risk listCM1 4NB: not on the flood risk listCM1 4NF: not on the flood risk listCM1 4NG: not on the flood risk listCM1 4NH: not on the flood risk listCM1 4NJ: not on the flood risk listCM1 4NL: not on the flood risk listCM1 4NN: not on the flood risk listCM1 4NP: not on the flood risk listCM1 4NQ: not on the flood risk listCM1 4NR: not on the flood risk listCM1 4NS: not on the flood risk listCM1 4NT: not on the flood risk listCM1 4NU: not on the flood risk listCM1 4NW: not on the flood risk listCM1 4NY: not on the flood risk listCM1 4NZ: not on the flood risk listCM1 4PG: not on the flood risk listCM1 4PH: not on the flood risk listCM1 4PP: not on the flood risk listCM1 4PQ: not on the flood risk listCM1 4PR: not on the flood risk listCM1 4PS: not on the flood risk listCM1 4PT: not on the flood risk listCM1 4PU: not on the flood risk listCM1 4PX: not on the flood risk listCM1 4PY: not on the flood risk listCM1 4QA: not on the flood risk listCM1 4QB: not on the flood risk listCM1 4QD: not on the flood risk listCM1 4QH: not on the flood risk listCM1 4QJ: not on the flood risk listCM1 4QP: not on the flood risk listCM1 4QQ: not on the flood risk listCM1 4QR: not on the flood risk listCM1 4QS: not on the flood risk listCM1 4QT: not on the flood risk listCM1 4QU: not on the flood risk listCM1 4QW: not on the flood risk listCM1 4QX: not on the flood risk listCM1 4QY: not on the flood risk listCM1 4QZ: not on the flood risk listCM1 4RA: not on the flood risk listCM1 4RB: not on the flood risk listCM1 4RD: not on the flood risk listCM1 4RE: not on the flood risk listCM1 4RG: not on the flood risk listCM1 4RL: not on the flood risk listCM1 4RN: not on the flood risk listCM1 4RP: not on the flood risk listCM1 4RQ: not on the flood risk listCM1 4RR: not on the flood risk listCM1 4RS: not on the flood risk listCM1 4RT: not on the flood risk listCM1 4RU: not on the flood risk listCM1 4RW: not on the flood risk listCM1 4RX: not on the flood risk listCM1 4SB: not on the flood risk listCM1 4SD: not on the flood risk listCM1 4SE: not on the flood risk listCM1 4SF: not on the flood risk listCM1 4SG: not on the flood risk listCM1 4SH: not on the flood risk listCM1 4SL: not on the flood risk listCM1 4SQ: not on the flood risk listCM1 4SS: not on the flood risk listCM1 4ST: not on the flood risk listCM1 4SU: not on the flood risk listCM1 4SY: not on the flood risk listCM1 4SZ: not on the flood risk listCM1 4TA: not on the flood risk listCM1 4TB: not on the flood risk listCM1 4TD: not on the flood risk listCM1 4TE: not on the flood risk listCM1 4TF: not on the flood risk listCM1 4TG: not on the flood risk listCM1 4TJ: not on the flood risk listCM1 4TL: not on the flood risk listCM1 4TN: not on the flood risk listCM1 4TP: not on the flood risk listCM1 4TQ: not on the flood risk listCM1 4TR: not on the flood risk listCM1 4TS: not on the flood risk listCM1 4TT: not on the flood risk listCM1 4TW: not on the flood risk listCM1 4TX: not on the flood risk listCM1 4TY: not on the flood risk listCM1 4UB: not on the flood risk listCM1 4UE: not on the flood risk listCM1 4UF: not on the flood risk listCM1 4UG: not on the flood risk listCM1 4UH: not on the flood risk listCM1 4UJ: not on the flood risk listCM1 4UL: not on the flood risk listCM1 4UN: not on the flood risk listCM1 4UP: not on the flood risk listCM1 4UQ: not on the flood risk listCM1 4UR: not on the flood risk listCM1 4UT: not on the flood risk listCM1 4UU: not on the flood risk listCM1 4UW: not on the flood risk listCM1 4UX: not on the flood risk listCM1 4UY: not on the flood risk listCM1 4UZ: not on the flood risk listCM1 4WA: not on the flood risk listCM1 4WD: not on the flood risk listCM1 4WF: not on the flood risk listCM1 4WG: not on the flood risk listCM1 4WH: not on the flood risk listCM1 4WT: not on the flood risk listCM1 4XA: not on the flood risk listCM1 4XB: not on the flood risk listCM1 4XD: not on the flood risk listCM1 4XE: not on the flood risk listCM1 4XG: not on the flood risk listCM1 4XH: not on the flood risk listCM1 4XL: not on the flood risk listCM1 4XN: not on the flood risk listCM1 4XQ: not on the flood risk listCM1 4XR: not on the flood risk listCM1 4XS: not on the flood risk listCM1 4XU: not on the flood risk listCM1 4XW: not on the flood risk listCM1 4XX: not on the flood risk listCM1 4XY: not on the flood risk listCM1 4XZ: not on the flood risk listCM1 4YA: not on the flood risk listCM1 4YB: not on the flood risk listCM1 4YD: not on the flood risk listCM1 4YE: not on the flood risk listCM1 4YF: not on the flood risk listCM1 4YG: not on the flood risk listCM1 4YJ: not on the flood risk listCM1 4YL: not on the flood risk listCM1 4YP: not on the flood risk listCM1 4YQ: not on the flood risk listCM1 4YR: not on the flood risk listCM1 4YT: not on the flood risk listCM1 4YY: not on the flood risk listCM1 4ZB: not on the flood risk listCM1 4ED: low flood risk at worstCM1 4EJ: low flood risk at worstCM1 4HB: low flood risk at worstCM1 4HD: low flood risk at worstCM1 4PE: low flood risk at worstCM1 4PF: low flood risk at worstCM1 4QL: low flood risk at worstCM1 4QN: low flood risk at worstCM1 4SA: low flood risk at worstCM1 4UA: low flood risk at worstCM1 4LT: medium flood risk at worstCM1 4LH: high flood riskCM1 4LL: high flood riskCM1 4PB: high flood riskCM1 4PD: high flood riskCM1 4PZ: high flood riskCM1 4RY: high flood riskCM1 4RZ: high flood riskCM1 4SX: high flood riskCM1 4TZ: high flood risk Broomfield Map of every postcode in the CM1 4 sector, by flood risk Of the 313 postcodes in the CM1 4 sector that ONS places, 9 have a home or business at high risk, 1 are at medium risk at worst, 11 are at low risk at worst and 292 are not on the Environment Agency's at-risk list. Places named: Broomfield. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. Broomfield
  • A home or business at high risk: 9
  • At medium risk at worst: 1
  • At low risk at worst: 11
  • At very low risk only: 0
  • Not on the at-risk list: 292

Of the 313 postcodes in the CM1 4 sector that ONS places, 9 have a home or business at high risk, 1 are at medium risk at worst, 11 are at low risk at worst and 292 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.

CM1 4RY2 at high riskCM1 4LH1 at high riskCM1 4LL1 at high riskCM1 4PB1 at high riskCM1 4PD1 at high riskCM1 4PZ1 at high riskCM1 4RZ1 at high riskCM1 4SX1 at high riskCM1 4TZ1 at high risk

What do homes sell for in CM1 4?

Homes in CM1 4 sold for a typical £425,000 in the 12 months to August 2026, across 145 sales, down 3.4% on the 12 months before, HM Land Registry's figures show.

£425,000 typical price, the 12 months to August 2026
£440,000 12 months to August 2025
▼ down 3.4% on the 12 months before
  • Detached £525,000 52 sales
  • Semi-detached £410,000 50 sales
  • Terraced £361,000 26 sales
  • Flat or maisonette £193,500 17 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 CM1 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 CM1 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.

CM1 4AACM1 4ABCM1 4ADCM1 4AECM1 4AFCM1 4AGCM1 4AHCM1 4AJCM1 4ALCM1 4ANCM1 4APCM1 4AQCM1 4ARCM1 4ASCM1 4ATCM1 4AUCM1 4AWCM1 4AXCM1 4AYCM1 4AZCM1 4BACM1 4BBCM1 4BDCM1 4BHCM1 4BJCM1 4BLCM1 4BNCM1 4BPCM1 4BSCM1 4BTCM1 4BUCM1 4BWCM1 4BXCM1 4BYCM1 4BZCM1 4DACM1 4DBCM1 4DDCM1 4DECM1 4DFCM1 4DGCM1 4DHCM1 4DLCM1 4DNCM1 4DPCM1 4DQCM1 4DUCM1 4DXCM1 4DYCM1 4DZCM1 4EACM1 4EBCM1 4EDCM1 4EECM1 4EFCM1 4EGCM1 4EHCM1 4EJCM1 4ELCM1 4EPCM1 4EQCM1 4ESCM1 4ETCM1 4EUCM1 4EXCM1 4EYCM1 4EZCM1 4FBCM1 4FDCM1 4FFCM1 4FGCM1 4FHCM1 4FJCM1 4FLCM1 4FNCM1 4FPCM1 4FQCM1 4FRCM1 4FSCM1 4FTCM1 4FUCM1 4FWCM1 4FXCM1 4FYCM1 4FZCM1 4GACM1 4GDCM1 4GECM1 4GFCM1 4GHCM1 4GJCM1 4GNCM1 4GPCM1 4GQCM1 4GRCM1 4GSCM1 4HACM1 4HBCM1 4HDCM1 4HECM1 4HFCM1 4HGCM1 4HHCM1 4HJCM1 4HLCM1 4HNCM1 4HPCM1 4HRCM1 4HSCM1 4HTCM1 4HWCM1 4HXCM1 4HYCM1 4HZCM1 4JBCM1 4JDCM1 4JECM1 4JFCM1 4JGCM1 4JHCM1 4JJCM1 4JLCM1 4JNCM1 4JPCM1 4JQCM1 4JRCM1 4JSCM1 4JTCM1 4JUCM1 4JWCM1 4JXCM1 4JYCM1 4LACM1 4LBCM1 4LDCM1 4LECM1 4LFCM1 4LGCM1 4LHCM1 4LJCM1 4LLCM1 4LNCM1 4LPCM1 4LQCM1 4LRCM1 4LSCM1 4LTCM1 4LUCM1 4LWCM1 4LXCM1 4LYCM1 4LZCM1 4NACM1 4NBCM1 4NECM1 4NFCM1 4NGCM1 4NHCM1 4NJCM1 4NLCM1 4NNCM1 4NPCM1 4NQCM1 4NRCM1 4NSCM1 4NTCM1 4NUCM1 4NWCM1 4NXCM1 4NYCM1 4NZCM1 4PACM1 4PBCM1 4PDCM1 4PECM1 4PFCM1 4PGCM1 4PHCM1 4PPCM1 4PQCM1 4PRCM1 4PSCM1 4PTCM1 4PUCM1 4PXCM1 4PYCM1 4PZCM1 4QACM1 4QBCM1 4QDCM1 4QHCM1 4QJCM1 4QLCM1 4QNCM1 4QPCM1 4QQCM1 4QRCM1 4QSCM1 4QTCM1 4QUCM1 4QWCM1 4QXCM1 4QYCM1 4QZCM1 4RACM1 4RBCM1 4RDCM1 4RECM1 4RGCM1 4RHCM1 4RLCM1 4RNCM1 4RPCM1 4RQCM1 4RRCM1 4RSCM1 4RTCM1 4RUCM1 4RWCM1 4RXCM1 4RYCM1 4RZCM1 4SACM1 4SBCM1 4SDCM1 4SECM1 4SFCM1 4SGCM1 4SHCM1 4SJCM1 4SLCM1 4SQCM1 4SSCM1 4STCM1 4SUCM1 4SXCM1 4SYCM1 4SZCM1 4TACM1 4TBCM1 4TDCM1 4TECM1 4TFCM1 4TGCM1 4TJCM1 4TLCM1 4TNCM1 4TPCM1 4TQCM1 4TRCM1 4TSCM1 4TTCM1 4TWCM1 4TXCM1 4TYCM1 4TZCM1 4UACM1 4UBCM1 4UECM1 4UFCM1 4UGCM1 4UHCM1 4UJCM1 4ULCM1 4UNCM1 4UPCM1 4UQCM1 4URCM1 4USCM1 4UTCM1 4UUCM1 4UWCM1 4UXCM1 4UYCM1 4UZCM1 4WACM1 4WBCM1 4WDCM1 4WFCM1 4WGCM1 4WHCM1 4WTCM1 4XACM1 4XBCM1 4XDCM1 4XECM1 4XGCM1 4XHCM1 4XLCM1 4XNCM1 4XQCM1 4XRCM1 4XSCM1 4XTCM1 4XUCM1 4XWCM1 4XXCM1 4XYCM1 4XZCM1 4YACM1 4YBCM1 4YDCM1 4YECM1 4YFCM1 4YGCM1 4YJCM1 4YLCM1 4YPCM1 4YQCM1 4YRCM1 4YTCM1 4YYCM1 4ZB

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.