CM3 3 postcode sector in the CM3 district

CM3 3 is a sector of the CM3 district: every postcode that starts CM3 3. It has 207 postcodes in use, 5 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 CM3 3 sector, by gigabit broadband

Map of every postcode in the CM3 3 sector, by gigabit broadband Of the 207 postcodes in the CM3 3 sector that ONS places, 14 have no home or business that can get gigabit, 43 have some that can, 144 can all get it and 6 have no Ofcom figure. Places named: Broomfield, Boreham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A131A138A1016 CM3 3WL: no Ofcom figureCM3 3AA: gigabit for allCM3 3AG: gigabit for allCM3 3AH: gigabit for allCM3 3AS: gigabit for allCM3 3BB: gigabit for allCM3 3BH: gigabit for allCM3 3BN: gigabit for allCM3 3BP: gigabit for allCM3 3BQ: gigabit for allCM3 3BS: gigabit for allCM3 3BT: gigabit for allCM3 3BU: gigabit for allCM3 3BW: gigabit for allCM3 3BX: gigabit for allCM3 3BZ: gigabit for allCM3 3DA: gigabit for allCM3 3DB: gigabit for allCM3 3DD: gigabit for allCM3 3DE: gigabit for allCM3 3DG: gigabit for allCM3 3DH: gigabit for allCM3 3DL: gigabit for allCM3 3DQ: gigabit for allCM3 3DR: gigabit for allCM3 3DS: gigabit for allCM3 3DT: gigabit for allCM3 3DU: gigabit for allCM3 3DX: gigabit for allCM3 3DY: gigabit for allCM3 3DZ: gigabit for allCM3 3EA: gigabit for allCM3 3EB: gigabit for allCM3 3ED: gigabit for allCM3 3EE: gigabit for allCM3 3EF: gigabit for allCM3 3EG: gigabit for allCM3 3EH: gigabit for allCM3 3EN: gigabit for allCM3 3EP: gigabit for allCM3 3EQ: gigabit for allCM3 3ER: gigabit for allCM3 3EX: gigabit for allCM3 3EY: gigabit for allCM3 3EZ: gigabit for allCM3 3FB: gigabit for allCM3 3FG: gigabit for allCM3 3FH: gigabit for allCM3 3FN: gigabit for allCM3 3FQ: gigabit for allCM3 3FR: gigabit for allCM3 3FS: gigabit for allCM3 3FT: gigabit for allCM3 3FW: gigabit for allCM3 3FX: gigabit for allCM3 3FZ: gigabit for allCM3 3GA: gigabit for allCM3 3GD: gigabit for allCM3 3GE: gigabit for allCM3 3GF: gigabit for allCM3 3GG: gigabit for allCM3 3GH: gigabit for allCM3 3GJ: gigabit for allCM3 3GN: gigabit for allCM3 3GP: gigabit for allCM3 3GQ: gigabit for allCM3 3GR: gigabit for allCM3 3GS: gigabit for allCM3 3GW: gigabit for allCM3 3GX: gigabit for allCM3 3GY: gigabit for allCM3 3GZ: gigabit for allCM3 3HA: gigabit for allCM3 3HB: gigabit for allCM3 3HD: gigabit for allCM3 3HG: gigabit for allCM3 3HH: gigabit for allCM3 3HQ: gigabit for allCM3 3HZ: gigabit for allCM3 3JA: gigabit for allCM3 3JD: gigabit for allCM3 3JF: gigabit for allCM3 3JH: gigabit for allCM3 3JJ: gigabit for allCM3 3JL: gigabit for allCM3 3JQ: gigabit for allCM3 3JR: gigabit for allCM3 3JT: gigabit for allCM3 3JW: gigabit for allCM3 3JZ: gigabit for allCM3 3LA: gigabit for allCM3 3LD: gigabit for allCM3 3LF: gigabit for allCM3 3LG: gigabit for allCM3 3LJ: gigabit for allCM3 3LN: gigabit for allCM3 3LP: gigabit for allCM3 3LR: gigabit for allCM3 3LS: gigabit for allCM3 3LT: gigabit for allCM3 3LW: gigabit for allCM3 3LX: gigabit for allCM3 3LY: gigabit for allCM3 3NE: gigabit for allCM3 3NH: gigabit for allCM3 3NQ: gigabit for allCM3 3NS: gigabit for allCM3 3NT: gigabit for allCM3 3NU: gigabit for allCM3 3NX: gigabit for allCM3 3NY: gigabit for allCM3 3NZ: gigabit for allCM3 3PB: gigabit for allCM3 3PE: gigabit for allCM3 3PL: gigabit for allCM3 3PN: gigabit for allCM3 3PQ: gigabit for allCM3 3PR: gigabit for allCM3 3PT: gigabit for allCM3 3PX: gigabit for allCM3 3QP: gigabit for allCM3 3QQ: gigabit for allCM3 3QS: gigabit for allCM3 3QU: gigabit for allCM3 3SA: gigabit for allCM3 3AF: gigabit for allCM3 3PH: gigabit for allCM3 3AD: some gigabitCM3 3AE: some gigabitCM3 3AJ: some gigabitCM3 3AL: some gigabitCM3 3AN: some gigabitCM3 3AR: some gigabitCM3 3AW: some gigabitCM3 3AX: some gigabitCM3 3AY: some gigabitCM3 3AZ: some gigabitCM3 3BA: some gigabitCM3 3BD: some gigabitCM3 3BE: some gigabitCM3 3BG: some gigabitCM3 3DJ: some gigabitCM3 3EJ: some gigabitCM3 3EW: some gigabitCM3 3FL: some gigabitCM3 3FP: some gigabitCM3 3FY: some gigabitCM3 3HJ: some gigabitCM3 3HN: some gigabitCM3 3HR: some gigabitCM3 3HS: some gigabitCM3 3JP: some gigabitCM3 3JU: some gigabitCM3 3LB: some gigabitCM3 3LE: some gigabitCM3 3LH: some gigabitCM3 3LL: some gigabitCM3 3LQ: some gigabitCM3 3NA: some gigabitCM3 3NB: some gigabitCM3 3ND: some gigabitCM3 3NF: some gigabitCM3 3NG: some gigabitCM3 3NJ: some gigabitCM3 3PA: some gigabitCM3 3PF: some gigabitCM3 3PG: some gigabitCM3 3PP: some gigabitCM3 3PY: some gigabitCM3 3JG: some gigabitCM3 3AU: no gigabitCM3 3FA: no gigabitCM3 3FE: no gigabitCM3 3HU: no gigabitCM3 3HW: no gigabitCM3 3HY: no gigabitCM3 3JS: no gigabitCM3 3LU: no gigabitCM3 3LZ: no gigabitCM3 3PS: no gigabitCM3 3PW: no gigabitCM3 3PZ: no gigabitCM3 3QT: no gigabitCM3 3QW: no gigabit BroomfieldBoreham Map of every postcode in the CM3 3 sector, by gigabit broadband Of the 207 postcodes in the CM3 3 sector that ONS places, 14 have no home or business that can get gigabit, 43 have some that can, 144 can all get it and 6 have no Ofcom figure. Places named: Broomfield, Boreham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A138 BroomfieldBoreham
  • No home or business can get gigabit: 14
  • Some can get gigabit: 43
  • Every home and business can get gigabit: 144
  • Ofcom gives no figure: 6

Of the 207 postcodes in the CM3 3 sector that ONS places, 14 have no home or business that can get gigabit, 43 have some that can, 144 can all get it and 6 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. 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

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

CM3 3AUCM3 3FACM3 3FECM3 3HUCM3 3HWCM3 3HYCM3 3JSCM3 3LUCM3 3LZCM3 3PSCM3 3PWCM3 3PZ

What do homes sell for in CM3 3?

Homes in CM3 3 sold for a typical £452,500 in the 12 months to September 2026, across 83 sales, HM Land Registry's figures show. The 12 months before gave £470,000 from 111 sales: not a change larger than chance would explain, given which homes happened to sell.

£452,500 typical price, the 12 months to September 2026
£470,000 12 months to September 2025
  • Detached £522,500 42 sales
  • Semi-detached £400,000 21 sales
  • Terraced £368,000 18 sales
  • Flat or maisonette 2 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 3. 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 3

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 3AACM3 3ABCM3 3ADCM3 3AECM3 3AFCM3 3AGCM3 3AHCM3 3AJCM3 3ALCM3 3ANCM3 3AQCM3 3ARCM3 3ASCM3 3AUCM3 3AWCM3 3AXCM3 3AYCM3 3AZCM3 3BACM3 3BBCM3 3BDCM3 3BECM3 3BGCM3 3BHCM3 3BNCM3 3BPCM3 3BQCM3 3BSCM3 3BTCM3 3BUCM3 3BWCM3 3BXCM3 3BYCM3 3BZCM3 3DACM3 3DBCM3 3DDCM3 3DECM3 3DFCM3 3DGCM3 3DHCM3 3DJCM3 3DLCM3 3DNCM3 3DPCM3 3DQCM3 3DRCM3 3DSCM3 3DTCM3 3DUCM3 3DXCM3 3DYCM3 3DZCM3 3EACM3 3EBCM3 3EDCM3 3EECM3 3EFCM3 3EGCM3 3EHCM3 3EJCM3 3ENCM3 3EPCM3 3EQCM3 3ERCM3 3EWCM3 3EXCM3 3EYCM3 3EZCM3 3FACM3 3FBCM3 3FECM3 3FFCM3 3FGCM3 3FHCM3 3FLCM3 3FNCM3 3FPCM3 3FQCM3 3FRCM3 3FSCM3 3FTCM3 3FUCM3 3FWCM3 3FXCM3 3FYCM3 3FZCM3 3GACM3 3GDCM3 3GECM3 3GFCM3 3GGCM3 3GHCM3 3GJCM3 3GNCM3 3GPCM3 3GQCM3 3GRCM3 3GSCM3 3GUCM3 3GWCM3 3GXCM3 3GYCM3 3GZCM3 3HACM3 3HBCM3 3HDCM3 3HECM3 3HGCM3 3HHCM3 3HJCM3 3HNCM3 3HQCM3 3HRCM3 3HSCM3 3HTCM3 3HUCM3 3HWCM3 3HXCM3 3HYCM3 3HZCM3 3JACM3 3JBCM3 3JDCM3 3JECM3 3JFCM3 3JGCM3 3JHCM3 3JJCM3 3JLCM3 3JNCM3 3JPCM3 3JQCM3 3JRCM3 3JSCM3 3JTCM3 3JUCM3 3JWCM3 3JZCM3 3LACM3 3LBCM3 3LDCM3 3LECM3 3LFCM3 3LGCM3 3LHCM3 3LJCM3 3LLCM3 3LNCM3 3LPCM3 3LQCM3 3LRCM3 3LSCM3 3LTCM3 3LUCM3 3LWCM3 3LXCM3 3LYCM3 3LZCM3 3NACM3 3NBCM3 3NDCM3 3NECM3 3NFCM3 3NGCM3 3NHCM3 3NJCM3 3NQCM3 3NSCM3 3NTCM3 3NUCM3 3NXCM3 3NYCM3 3NZCM3 3PACM3 3PBCM3 3PDCM3 3PECM3 3PFCM3 3PGCM3 3PHCM3 3PJCM3 3PLCM3 3PNCM3 3PPCM3 3PQCM3 3PRCM3 3PSCM3 3PTCM3 3PWCM3 3PXCM3 3PYCM3 3PZCM3 3QACM3 3QBCM3 3QNCM3 3QPCM3 3QQCM3 3QSCM3 3QTCM3 3QUCM3 3QWCM3 3SACM3 3WLCM3 3WPCM3 3XQCM3 3YA

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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