CM21 9 postcode sector in the CM21 district

CM21 9 is a sector of the CM21 district: every postcode that starts CM21 9. It has 175 postcodes in use, 4 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 CM21 9 sector, and which are new since 2020

Map of every postcode in the CM21 9 sector, by new since 2020 Of the 175 postcodes in the CM21 9 sector that ONS places, 4 are new since 2020 and 171 were in use before 2020. 2 postcodes lie beyond the edge and are listed under the map. Places named: Sawbridgeworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A1184 CM21 9AA: before 2020CM21 9AB: before 2020CM21 9AD: before 2020CM21 9AE: before 2020CM21 9AG: before 2020CM21 9AH: before 2020CM21 9AJ: before 2020CM21 9AN: before 2020CM21 9AQ: before 2020CM21 9AR: before 2020CM21 9AT: before 2020CM21 9AX: before 2020CM21 9AY: before 2020CM21 9AZ: before 2020CM21 9BA: before 2020CM21 9BB: before 2020CM21 9BD: before 2020CM21 9BE: before 2020CM21 9BG: before 2020CM21 9BH: before 2020CM21 9BJ: before 2020CM21 9BL: before 2020CM21 9BN: before 2020CM21 9BQ: before 2020CM21 9BS: before 2020CM21 9BU: before 2020CM21 9BW: before 2020CM21 9BX: before 2020CM21 9BY: before 2020CM21 9BZ: before 2020CM21 9DA: before 2020CM21 9DB: before 2020CM21 9DD: before 2020CM21 9DE: before 2020CM21 9DF: before 2020CM21 9DG: before 2020CM21 9DH: before 2020CM21 9DJ: before 2020CM21 9DL: before 2020CM21 9DN: before 2020CM21 9DP: before 2020CM21 9DQ: before 2020CM21 9DR: before 2020CM21 9DS: before 2020CM21 9DT: before 2020CM21 9DU: before 2020CM21 9DW: before 2020CM21 9DX: before 2020CM21 9DY: before 2020CM21 9EA: before 2020CM21 9EB: before 2020CM21 9ED: before 2020CM21 9EF: before 2020CM21 9EH: before 2020CM21 9EJ: before 2020CM21 9EL: before 2020CM21 9EN: before 2020CM21 9EP: before 2020CM21 9ER: before 2020CM21 9ES: before 2020CM21 9ET: before 2020CM21 9EU: before 2020CM21 9EW: before 2020CM21 9EX: before 2020CM21 9EY: before 2020CM21 9FA: before 2020CM21 9FB: before 2020CM21 9FD: before 2020CM21 9FE: before 2020CM21 9FF: before 2020CM21 9FG: before 2020CM21 9FH: before 2020CM21 9FJ: before 2020CM21 9GY: before 2020CM21 9GZ: before 2020CM21 9HA: before 2020CM21 9HB: before 2020CM21 9HD: before 2020CM21 9HE: before 2020CM21 9HG: before 2020CM21 9HH: before 2020CM21 9HJ: before 2020CM21 9HL: before 2020CM21 9HN: before 2020CM21 9HP: before 2020CM21 9HR: before 2020CM21 9HS: before 2020CM21 9HT: before 2020CM21 9HU: before 2020CM21 9HZ: before 2020CM21 9JA: before 2020CM21 9JB: before 2020CM21 9JE: before 2020CM21 9JF: before 2020CM21 9JG: before 2020CM21 9JJ: before 2020CM21 9JL: before 2020CM21 9JN: before 2020CM21 9JP: before 2020CM21 9JR: before 2020CM21 9JS: before 2020CM21 9JT: before 2020CM21 9JX: before 2020CM21 9JY: before 2020CM21 9JZ: before 2020CM21 9LD: before 2020CM21 9LE: before 2020CM21 9LF: before 2020CM21 9LG: before 2020CM21 9LH: before 2020CM21 9LJ: before 2020CM21 9LL: before 2020CM21 9LN: before 2020CM21 9LP: before 2020CM21 9LQ: before 2020CM21 9LR: before 2020CM21 9LW: before 2020CM21 9LZ: before 2020CM21 9NA: before 2020CM21 9NB: before 2020CM21 9ND: before 2020CM21 9NE: before 2020CM21 9NF: before 2020CM21 9NG: before 2020CM21 9NH: before 2020CM21 9NJ: before 2020CM21 9NL: before 2020CM21 9NN: before 2020CM21 9NP: before 2020CM21 9NQ: before 2020CM21 9NR: before 2020CM21 9NS: before 2020CM21 9NT: before 2020CM21 9NU: before 2020CM21 9NW: before 2020CM21 9NX: before 2020CM21 9NY: before 2020CM21 9PE: before 2020CM21 9PF: before 2020CM21 9PL: before 2020CM21 9PN: before 2020CM21 9PP: before 2020CM21 9PR: before 2020CM21 9PS: before 2020CM21 9PT: before 2020CM21 9PU: before 2020CM21 9PW: before 2020CM21 9PX: before 2020CM21 9PY: before 2020CM21 9PZ: before 2020CM21 9QA: before 2020CM21 9QD: before 2020CM21 9QE: before 2020CM21 9QG: before 2020CM21 9QH: before 2020CM21 9QJ: before 2020CM21 9QL: before 2020CM21 9QN: before 2020CM21 9QP: before 2020CM21 9QU: before 2020CM21 9QW: before 2020CM21 9RA: before 2020CM21 9RB: before 2020CM21 9RD: before 2020CM21 9RE: before 2020CM21 9RF: before 2020CM21 9TD: before 2020CM21 9FN: new since 2020CM21 9FP: new since 2020CM21 9FQ: new since 2020CM21 9FR: new since 2020 Sawbridgeworth Map of every postcode in the CM21 9 sector, by new since 2020 Of the 175 postcodes in the CM21 9 sector that ONS places, 4 are new since 2020 and 171 were in use before 2020. 2 postcodes lie beyond the edge and are listed under the map. Places named: Sawbridgeworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Sawbridgeworth
  • New since 2020: 4
  • In use before 2020: 171

Of the 175 postcodes in the CM21 9 sector that ONS places, 4 are new since 2020 and 171 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. 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; when each came into use: the same directory; 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 4 newest postcodes

CM21 9FQMarch 2025CM21 9FRSeptember 2023CM21 9FNApril 2021CM21 9FPOctober 2020

2 further out, not drawn

These postcodes lie well apart from the rest, so the map is drawn without them to show the rest closer; they are in every count.

CM21 9HXCM21 9HY

What do homes sell for in CM21 9?

Homes in CM21 9 sold for a typical £375,000 in the 12 months to August 2026, across 84 sales, down 2.7% on the 12 months before, HM Land Registry's figures show.

£375,000 typical price, the 12 months to August 2026
£385,500 12 months to August 2025
▼ down 2.7% on the 12 months before
  • Detached £670,000 17 sales
  • Semi-detached £480,000 20 sales
  • Terraced £330,000 21 sales
  • Flat or maisonette £220,000 26 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 CM21 9. 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 CM21 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.

CM21 9AACM21 9ABCM21 9ADCM21 9AECM21 9AGCM21 9AHCM21 9AJCM21 9ANCM21 9AQCM21 9ARCM21 9ATCM21 9AXCM21 9AYCM21 9AZCM21 9BACM21 9BBCM21 9BDCM21 9BECM21 9BGCM21 9BHCM21 9BJCM21 9BLCM21 9BNCM21 9BQCM21 9BSCM21 9BUCM21 9BWCM21 9BXCM21 9BYCM21 9BZCM21 9DACM21 9DBCM21 9DDCM21 9DECM21 9DFCM21 9DGCM21 9DHCM21 9DJCM21 9DLCM21 9DNCM21 9DPCM21 9DQCM21 9DRCM21 9DSCM21 9DTCM21 9DUCM21 9DWCM21 9DXCM21 9DYCM21 9EACM21 9EBCM21 9EDCM21 9EFCM21 9EHCM21 9EJCM21 9ELCM21 9ENCM21 9EPCM21 9ERCM21 9ESCM21 9ETCM21 9EUCM21 9EWCM21 9EXCM21 9EYCM21 9FACM21 9FBCM21 9FDCM21 9FECM21 9FFCM21 9FGCM21 9FHCM21 9FJCM21 9FNCM21 9FPCM21 9FQCM21 9FRCM21 9GYCM21 9GZCM21 9HACM21 9HBCM21 9HDCM21 9HECM21 9HGCM21 9HHCM21 9HJCM21 9HLCM21 9HNCM21 9HPCM21 9HRCM21 9HSCM21 9HTCM21 9HUCM21 9HXCM21 9HYCM21 9HZCM21 9JACM21 9JBCM21 9JECM21 9JFCM21 9JGCM21 9JHCM21 9JJCM21 9JLCM21 9JNCM21 9JPCM21 9JRCM21 9JSCM21 9JTCM21 9JXCM21 9JYCM21 9JZCM21 9LDCM21 9LECM21 9LFCM21 9LGCM21 9LHCM21 9LJCM21 9LLCM21 9LNCM21 9LPCM21 9LQCM21 9LRCM21 9LWCM21 9LZCM21 9NACM21 9NBCM21 9NDCM21 9NECM21 9NFCM21 9NGCM21 9NHCM21 9NJCM21 9NLCM21 9NNCM21 9NPCM21 9NQCM21 9NRCM21 9NSCM21 9NTCM21 9NUCM21 9NWCM21 9NXCM21 9NYCM21 9PECM21 9PFCM21 9PLCM21 9PNCM21 9PPCM21 9PRCM21 9PSCM21 9PTCM21 9PUCM21 9PWCM21 9PXCM21 9PYCM21 9PZCM21 9QACM21 9QDCM21 9QECM21 9QGCM21 9QHCM21 9QJCM21 9QLCM21 9QNCM21 9QPCM21 9QUCM21 9QWCM21 9RACM21 9RBCM21 9RDCM21 9RECM21 9RFCM21 9RGCM21 9TD

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.

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