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 gigabit broadband

Map of every postcode in the CM3 4 sector, by gigabit broadband Of the 244 postcodes in the CM3 4 sector that ONS places, 98 have no home or business that can get gigabit, 53 have some that can, 91 can all get it and 2 have no Ofcom figure. 2 groups of postcodes without gigabit are outlined: 53 postcodes without gigabit; 19 postcodes without gigabit. 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 4AW: no Ofcom figureCM3 4JS: no Ofcom figureCM3 4AA: gigabit for allCM3 4AF: gigabit for allCM3 4AL: gigabit for allCM3 4AN: gigabit for allCM3 4AP: gigabit for allCM3 4AR: gigabit for allCM3 4AT: gigabit for allCM3 4AY: gigabit for allCM3 4BA: gigabit for allCM3 4BB: gigabit for allCM3 4BG: gigabit for allCM3 4BH: gigabit for allCM3 4BJ: gigabit for allCM3 4BN: gigabit for allCM3 4BQ: gigabit for allCM3 4DA: gigabit for allCM3 4DE: gigabit for allCM3 4DH: gigabit for allCM3 4DJ: gigabit for allCM3 4DL: gigabit for allCM3 4DU: gigabit for allCM3 4EB: gigabit for allCM3 4EG: gigabit for allCM3 4EJ: gigabit for allCM3 4ES: gigabit for allCM3 4ET: gigabit for allCM3 4EU: gigabit for allCM3 4EX: gigabit for allCM3 4EY: gigabit for allCM3 4EZ: gigabit for allCM3 4FA: gigabit for allCM3 4FG: gigabit for allCM3 4FP: gigabit for allCM3 4FQ: gigabit for allCM3 4HA: gigabit for allCM3 4HB: gigabit for allCM3 4HH: gigabit for allCM3 4HJ: gigabit for allCM3 4HP: gigabit for allCM3 4HQ: gigabit for allCM3 4HT: gigabit for allCM3 4HU: gigabit for allCM3 4JH: gigabit for allCM3 4JJ: gigabit for allCM3 4JL: gigabit for allCM3 4JN: gigabit for allCM3 4JP: gigabit for allCM3 4JR: gigabit for allCM3 4JW: gigabit for allCM3 4LL: gigabit for allCM3 4LN: gigabit for allCM3 4LP: gigabit for allCM3 4LS: gigabit for allCM3 4LU: gigabit for allCM3 4LW: gigabit for allCM3 4NB: gigabit for allCM3 4ND: gigabit for allCM3 4NE: gigabit for allCM3 4NG: gigabit for allCM3 4NU: gigabit for allCM3 4NX: gigabit for allCM3 4NY: gigabit for allCM3 4PH: gigabit for allCM3 4PL: gigabit for allCM3 4QB: gigabit for allCM3 4QE: gigabit for allCM3 4RU: gigabit for allCM3 4RX: gigabit for allCM3 4SN: gigabit for allCM3 4SQ: gigabit for allCM3 4SS: gigabit for allCM3 4ST: gigabit for allCM3 4SU: gigabit for allCM3 4UJ: gigabit for allCM3 4XA: gigabit for allCM3 4XB: gigabit for allCM3 4XD: gigabit for allCM3 4XG: gigabit for allCM3 4XH: gigabit for allCM3 4XL: gigabit for allCM3 4XW: gigabit for allCM3 4XY: gigabit for allCM3 4AB: some gigabitCM3 4AE: some gigabitCM3 4AG: some gigabitCM3 4AJ: some gigabitCM3 4AU: some gigabitCM3 4AX: some gigabitCM3 4AZ: some gigabitCM3 4BD: some gigabitCM3 4BE: some gigabitCM3 4BP: some gigabitCM3 4BW: some gigabitCM3 4BX: some gigabitCM3 4BY: some gigabitCM3 4BZ: some gigabitCM3 4DB: some gigabitCM3 4DN: some gigabitCM3 4DS: some gigabitCM3 4DT: some gigabitCM3 4DW: some gigabitCM3 4DX: some gigabitCM3 4DY: some gigabitCM3 4ED: some gigabitCM3 4EH: some gigabitCM3 4EP: some gigabitCM3 4EQ: some gigabitCM3 4ER: some gigabitCM3 4HD: some gigabitCM3 4HF: some gigabitCM3 4HG: some gigabitCM3 4HL: some gigabitCM3 4HN: some gigabitCM3 4HW: some gigabitCM3 4JB: some gigabitCM3 4LJ: some gigabitCM3 4LR: some gigabitCM3 4LX: some gigabitCM3 4NP: some gigabitCM3 4NQ: some gigabitCM3 4NS: some gigabitCM3 4NT: some gigabitCM3 4NZ: some gigabitCM3 4PN: some gigabitCM3 4QH: some gigabitCM3 4RF: some gigabitCM3 4RS: some gigabitCM3 4RT: some gigabitCM3 4RY: some gigabitCM3 4RZ: some gigabitCM3 4SA: some gigabitCM3 4SB: some gigabitCM3 4SX: some gigabitCM3 4AQ: no gigabitCM3 4BL: no gigabitCM3 4BS: no gigabitCM3 4BT: no gigabitCM3 4BU: no gigabitCM3 4DD: no gigabitCM3 4DP: no gigabitCM3 4DR: no gigabitCM3 4DZ: no gigabitCM3 4EE: no gigabitCM3 4EF: no gigabitCM3 4FJ: no gigabitCM3 4FL: no gigabitCM3 4FS: no gigabitCM3 4HX: no gigabitCM3 4HY: no gigabitCM3 4HZ: no gigabitCM3 4JA: no gigabitCM3 4JE: no gigabitCM3 4JF: no gigabitCM3 4JG: no gigabitCM3 4JQ: no gigabitCM3 4LA: no gigabitCM3 4LB: no gigabitCM3 4LD: no gigabitCM3 4LE: no gigabitCM3 4LF: no gigabitCM3 4LH: no gigabitCM3 4LT: no gigabitCM3 4LZ: no gigabitCM3 4NA: no gigabitCM3 4NL: no gigabitCM3 4NN: no gigabitCM3 4NW: no gigabitCM3 4PB: no gigabitCM3 4PD: no gigabitCM3 4PE: no gigabitCM3 4PF: no gigabitCM3 4PG: no gigabitCM3 4PP: no gigabitCM3 4PQ: no gigabitCM3 4PR: no gigabitCM3 4PT: no gigabitCM3 4QJ: no gigabitCM3 4QL: no gigabitCM3 4QN: no gigabitCM3 4QP: no gigabitCM3 4QR: no gigabitCM3 4QS: no gigabitCM3 4QT: no gigabitCM3 4QU: no gigabitCM3 4QW: no gigabitCM3 4QX: no gigabitCM3 4QY: no gigabitCM3 4QZ: no gigabitCM3 4RA: no gigabitCM3 4RB: no gigabitCM3 4RD: no gigabitCM3 4RE: no gigabitCM3 4RH: no gigabitCM3 4RJ: no gigabitCM3 4RL: no gigabitCM3 4RN: no gigabitCM3 4RP: no gigabitCM3 4RQ: no gigabitCM3 4SD: no gigabitCM3 4SE: no gigabitCM3 4SF: no gigabitCM3 4SG: no gigabitCM3 4SH: no gigabitCM3 4SP: no gigabitCM3 4SR: no gigabitCM3 4SY: no gigabitCM3 4SZ: no gigabitCM3 4TA: no gigabitCM3 4TB: no gigabitCM3 4TD: no gigabitCM3 4TE: no gigabitCM3 4TG: no gigabitCM3 4TH: no gigabitCM3 4TJ: no gigabitCM3 4TL: no gigabitCM3 4TN: no gigabitCM3 4TP: no gigabitCM3 4TQ: no gigabitCM3 4TR: no gigabitCM3 4TS: no gigabitCM3 4TW: no gigabitCM3 4UE: no gigabitCM3 4NJ: no gigabitCM3 4PS: no gigabit ChelmsfordSouth Woodham FerrersDanburyGalleywood 53 postcodes without gigabit, outlined: this goes to CM3 4UE, the one nearest the middle of them53 postcodes without gigabit19 postcodes without gigabit, outlined: this goes to CM3 4TF, the one nearest the middle of them19 postcodes without gigabit Map of every postcode in the CM3 4 sector, by gigabit broadband Of the 244 postcodes in the CM3 4 sector that ONS places, 98 have no home or business that can get gigabit, 53 have some that can, 91 can all get it and 2 have no Ofcom figure. 2 groups of postcodes without gigabit are outlined: 53 postcodes without gigabit; 19 postcodes without gigabit. 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
  • No home or business can get gigabit: 98
  • Some can get gigabit: 53
  • Every home and business can get gigabit: 91
  • Ofcom gives no figure: 2
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 244 postcodes in the CM3 4 sector that ONS places, 98 have no home or business that can get gigabit, 53 have some that can, 91 can all get it and 2 have no Ofcom figure.

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 280 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.

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Ofcom Connected Nations, Connected Nations, Spring 2026; roads, rivers and built-up areas: Ordnance Survey open maps. 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.

Postcodes without gigabit

98 postcodes here have no gigabit. These are the 12 first in postcode order.

CM3 4AQCM3 4BLCM3 4BSCM3 4BTCM3 4BUCM3 4DDCM3 4DPCM3 4DRCM3 4DZCM3 4EECM3 4EFCM3 4FJ

Where the postcodes without gigabit lie together

  • 53 postcodes without gigabit, outlined on the map. CM3 4UE, is the one nearest the middle of them.
  • 19 postcodes without gigabit, outlined on the map. CM3 4TF, is the one nearest the middle of them.

What do homes sell for in CM3 4?

Homes in CM3 4 sold for a typical £530,000 in the 12 months to September 2026, across 89 sales, HM Land Registry's figures show. The 12 months before gave £580,000 from 152 sales: not a change larger than chance would explain, given which homes happened to sell.

£530,000 typical price, the 12 months to September 2026
£580,000 12 months to September 2025
  • Detached £645,000 55 sales
  • Semi-detached £437,500 22 sales
  • Terraced £340,000 9 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 October 2026.

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: ONS Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed.

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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Where the facts on this page come from

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.

Licence: Open Government Licence v3.0.

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