CM6 4 postcode sector in the CM6 district

CM6 4 is a sector of the CM6 district: every postcode that starts CM6 4. It has 61 postcodes in use.

Not sure what a sector is? UK postcode format explained.

Every postcode in the CM6 4 sector, by flood risk

Map of every postcode in the CM6 4 sector, by flood risk Of the 61 postcodes in the CM6 4 sector that ONS places, 61 are not on the Environment Agency's at-risk list. Places named: Great Dunmow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A120 CM6 4AA: not on the flood risk listCM6 4AB: not on the flood risk listCM6 4AD: not on the flood risk listCM6 4AE: not on the flood risk listCM6 4AF: not on the flood risk listCM6 4AG: not on the flood risk listCM6 4AH: not on the flood risk listCM6 4AJ: not on the flood risk listCM6 4AL: not on the flood risk listCM6 4AN: not on the flood risk listCM6 4AP: not on the flood risk listCM6 4AQ: not on the flood risk listCM6 4AR: not on the flood risk listCM6 4AS: not on the flood risk listCM6 4AT: not on the flood risk listCM6 4AU: not on the flood risk listCM6 4BD: not on the flood risk listCM6 4BE: not on the flood risk listCM6 4BF: not on the flood risk listCM6 4BG: not on the flood risk listCM6 4BR: not on the flood risk listCM6 4DD: not on the flood risk listCM6 4DF: not on the flood risk listCM6 4DH: not on the flood risk listCM6 4EG: not on the flood risk listCM6 4FA: not on the flood risk listCM6 4FB: not on the flood risk listCM6 4FD: not on the flood risk listCM6 4FE: not on the flood risk listCM6 4FF: not on the flood risk listCM6 4FG: not on the flood risk listCM6 4FJ: not on the flood risk listCM6 4FN: not on the flood risk listCM6 4FP: not on the flood risk listCM6 4FQ: not on the flood risk listCM6 4FT: not on the flood risk listCM6 4FU: not on the flood risk listCM6 4FW: not on the flood risk listCM6 4FY: not on the flood risk listCM6 4FZ: not on the flood risk listCM6 4GA: not on the flood risk listCM6 4GB: not on the flood risk listCM6 4GD: not on the flood risk listCM6 4GE: not on the flood risk listCM6 4GF: not on the flood risk listCM6 4GG: not on the flood risk listCM6 4GH: not on the flood risk listCM6 4GL: not on the flood risk listCM6 4GR: not on the flood risk listCM6 4GS: not on the flood risk listCM6 4GT: not on the flood risk listCM6 4GU: not on the flood risk listCM6 4GW: not on the flood risk listCM6 4GX: not on the flood risk listCM6 4GY: not on the flood risk listCM6 4HA: not on the flood risk listCM6 4HF: not on the flood risk listCM6 4HX: not on the flood risk listCM6 4JF: not on the flood risk listCM6 4JG: not on the flood risk list Great Dunmow Map of every postcode in the CM6 4 sector, by flood risk Of the 61 postcodes in the CM6 4 sector that ONS places, 61 are not on the Environment Agency's at-risk list. Places named: Great Dunmow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A120 Great Dunmow
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 61

Of the 61 postcodes in the CM6 4 sector that ONS places, 61 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

What do homes sell for in CM6 4?

Homes in CM6 4 sold for a typical £445,000 in the 12 months to August 2026, across 31 sales, down 3.3% on the 12 months before, HM Land Registry's figures show.

£445,000 typical price, the 12 months to August 2026
£460,000 12 months to August 2025
▼ down 3.3% on the 12 months before
  • Detached £490,000 20 sales
  • Semi-detached £420,000 9 sales
  • Terraced 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 CM6 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 CM6 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.

CM6 4AACM6 4ABCM6 4ADCM6 4AECM6 4AFCM6 4AGCM6 4AHCM6 4AJCM6 4ALCM6 4ANCM6 4APCM6 4AQCM6 4ARCM6 4ASCM6 4ATCM6 4AUCM6 4BDCM6 4BECM6 4BFCM6 4BGCM6 4BRCM6 4DDCM6 4DFCM6 4DHCM6 4EGCM6 4FACM6 4FBCM6 4FDCM6 4FECM6 4FFCM6 4FGCM6 4FJCM6 4FNCM6 4FPCM6 4FQCM6 4FTCM6 4FUCM6 4FWCM6 4FYCM6 4FZCM6 4GACM6 4GBCM6 4GDCM6 4GECM6 4GFCM6 4GGCM6 4GHCM6 4GLCM6 4GRCM6 4GSCM6 4GTCM6 4GUCM6 4GWCM6 4GXCM6 4GYCM6 4HACM6 4HECM6 4HFCM6 4HXCM6 4JFCM6 4JG

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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