CM1 9 postcode sector in the CM1 district

CM1 9 is a sector of the CM1 district: every postcode that starts CM1 9. It has 80 postcodes in use, 56 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 9 sector, by gigabit broadband

Map of every postcode in the CM1 9 sector, by gigabit broadband Of the 80 postcodes in the CM1 9 sector that ONS places, 1 can all get it and 79 have no Ofcom figure. Places named: Chelmsford, Galleywood. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A12A130A1114A414 CM1 9AE: no Ofcom figureCM1 9SD: no Ofcom figureCM1 9SH: no Ofcom figureCM1 9SX: no Ofcom figureCM1 9SU: gigabit for all ChelmsfordGalleywood Map of every postcode in the CM1 9 sector, by gigabit broadband Of the 80 postcodes in the CM1 9 sector that ONS places, 1 can all get it and 79 have no Ofcom figure. Places named: Chelmsford, Galleywood. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A12A1114A1016 ChelmsfordGalleywood
  • No home or business can get gigabit: 0
  • Some can get gigabit: 0
  • Every home and business can get gigabit: 1
  • Ofcom gives no figure: 79

Of the 80 postcodes in the CM1 9 sector that ONS places, 1 can all get it and 79 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 in CM1 9

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 9AECM1 9ASCM1 9AWCM1 9AYCM1 9BJCM1 9BYCM1 9EQCM1 9FXCM1 9HACM1 9HQCM1 9HRCM1 9HSCM1 9HWCM1 9JECM1 9JZCM1 9LACM1 9LRCM1 9LXCM1 9NFCM1 9NNCM1 9NUCM1 9NYCM1 9PGCM1 9PHCM1 9PLCM1 9PWCM1 9PZCM1 9QFCM1 9QLCM1 9QWCM1 9QXCM1 9QZCM1 9RACM1 9RBCM1 9RECM1 9RGCM1 9RHCM1 9RJCM1 9RLCM1 9RPCM1 9RQCM1 9SACM1 9SBCM1 9SDCM1 9SECM1 9SFCM1 9SGCM1 9SHCM1 9SJCM1 9SLCM1 9SNCM1 9SPCM1 9SQCM1 9SRCM1 9SSCM1 9STCM1 9SUCM1 9SWCM1 9SXCM1 9SYCM1 9SZCM1 9TACM1 9TBCM1 9TDCM1 9TECM1 9TFCM1 9TGCM1 9TXCM1 9UHCM1 9ULCM1 9UQCM1 9USCM1 9UWCM1 9WBCM1 9XUCM1 9XWCM1 9YECM1 9ZBCM1 9ZNCM1 9ZZ

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.

Licence: Open Government Licence v3.0.

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