CM20 1 postcode sector in the CM20 district

CM20 1 is a sector of the CM20 district: every postcode that starts CM20 1. It has 161 postcodes in use, 12 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 CM20 1 sector, by flood risk

Map of every postcode in the CM20 1 sector, by flood risk Of the 161 postcodes in the CM20 1 sector that ONS places, 1 have a home or business at high risk and 160 are not on the Environment Agency's at-risk list. Places named: Little Parndon & Town Centre. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A1169A1019A1025 CM20 1AA: not on the flood risk listCM20 1AB: not on the flood risk listCM20 1AJ: not on the flood risk listCM20 1AN: not on the flood risk listCM20 1AQ: not on the flood risk listCM20 1AR: not on the flood risk listCM20 1AS: not on the flood risk listCM20 1AT: not on the flood risk listCM20 1AU: not on the flood risk listCM20 1AW: not on the flood risk listCM20 1AY: not on the flood risk listCM20 1BA: not on the flood risk listCM20 1BB: not on the flood risk listCM20 1BD: not on the flood risk listCM20 1BL: not on the flood risk listCM20 1BU: not on the flood risk listCM20 1BW: not on the flood risk listCM20 1BX: not on the flood risk listCM20 1BZ: not on the flood risk listCM20 1DG: not on the flood risk listCM20 1DR: not on the flood risk listCM20 1DS: not on the flood risk listCM20 1DT: not on the flood risk listCM20 1DU: not on the flood risk listCM20 1DW: not on the flood risk listCM20 1DZ: not on the flood risk listCM20 1EA: not on the flood risk listCM20 1EB: not on the flood risk listCM20 1ED: not on the flood risk listCM20 1EE: not on the flood risk listCM20 1EF: not on the flood risk listCM20 1EG: not on the flood risk listCM20 1EJ: not on the flood risk listCM20 1EL: not on the flood risk listCM20 1EN: not on the flood risk listCM20 1EP: not on the flood risk listCM20 1ES: not on the flood risk listCM20 1EY: not on the flood risk listCM20 1FA: not on the flood risk listCM20 1FD: not on the flood risk listCM20 1FE: not on the flood risk listCM20 1FH: not on the flood risk listCM20 1FJ: not on the flood risk listCM20 1FL: not on the flood risk listCM20 1FS: not on the flood risk listCM20 1FT: not on the flood risk listCM20 1FU: not on the flood risk listCM20 1FW: not on the flood risk listCM20 1HA: not on the flood risk listCM20 1HF: not on the flood risk listCM20 1HG: not on the flood risk listCM20 1HP: not on the flood risk listCM20 1HX: not on the flood risk listCM20 1JA: not on the flood risk listCM20 1JD: not on the flood risk listCM20 1JF: not on the flood risk listCM20 1JG: not on the flood risk listCM20 1JH: not on the flood risk listCM20 1JJ: not on the flood risk listCM20 1JL: not on the flood risk listCM20 1JN: not on the flood risk listCM20 1JQ: not on the flood risk listCM20 1LP: not on the flood risk listCM20 1LS: not on the flood risk listCM20 1NA: not on the flood risk listCM20 1NB: not on the flood risk listCM20 1NL: not on the flood risk listCM20 1NN: not on the flood risk listCM20 1NP: not on the flood risk listCM20 1NR: not on the flood risk listCM20 1NS: not on the flood risk listCM20 1NT: not on the flood risk listCM20 1NU: not on the flood risk listCM20 1NW: not on the flood risk listCM20 1NX: not on the flood risk listCM20 1NY: not on the flood risk listCM20 1NZ: not on the flood risk listCM20 1PA: not on the flood risk listCM20 1PB: not on the flood risk listCM20 1PD: not on the flood risk listCM20 1PE: not on the flood risk listCM20 1PG: not on the flood risk listCM20 1PH: not on the flood risk listCM20 1PJ: not on the flood risk listCM20 1PL: not on the flood risk listCM20 1PN: not on the flood risk listCM20 1PP: not on the flood risk listCM20 1PQ: not on the flood risk listCM20 1PR: not on the flood risk listCM20 1PU: not on the flood risk listCM20 1PW: not on the flood risk listCM20 1PX: not on the flood risk listCM20 1PY: not on the flood risk listCM20 1PZ: not on the flood risk listCM20 1QA: not on the flood risk listCM20 1QB: not on the flood risk listCM20 1QD: not on the flood risk listCM20 1QE: not on the flood risk listCM20 1QF: not on the flood risk listCM20 1QG: not on the flood risk listCM20 1QP: not on the flood risk listCM20 1QQ: not on the flood risk listCM20 1QR: not on the flood risk listCM20 1QX: not on the flood risk listCM20 1RD: not on the flood risk listCM20 1RE: not on the flood risk listCM20 1RF: not on the flood risk listCM20 1RG: not on the flood risk listCM20 1RJ: not on the flood risk listCM20 1RL: not on the flood risk listCM20 1RN: not on the flood risk listCM20 1RP: not on the flood risk listCM20 1RQ: not on the flood risk listCM20 1RR: not on the flood risk listCM20 1RS: not on the flood risk listCM20 1RT: not on the flood risk listCM20 1RU: not on the flood risk listCM20 1RW: not on the flood risk listCM20 1SB: not on the flood risk listCM20 1SD: not on the flood risk listCM20 1SE: not on the flood risk listCM20 1SF: not on the flood risk listCM20 1SG: not on the flood risk listCM20 1SH: not on the flood risk listCM20 1SJ: not on the flood risk listCM20 1SL: not on the flood risk listCM20 1SN: not on the flood risk listCM20 1SP: not on the flood risk listCM20 1SQ: not on the flood risk listCM20 1ST: not on the flood risk listCM20 1SU: not on the flood risk listCM20 1SW: not on the flood risk listCM20 1SX: not on the flood risk listCM20 1SY: not on the flood risk listCM20 1SZ: not on the flood risk listCM20 1TA: not on the flood risk listCM20 1TB: not on the flood risk listCM20 1TD: not on the flood risk listCM20 1TE: not on the flood risk listCM20 1TH: not on the flood risk listCM20 1TJ: not on the flood risk listCM20 1TL: not on the flood risk listCM20 1TN: not on the flood risk listCM20 1TP: not on the flood risk listCM20 1TQ: not on the flood risk listCM20 1TW: not on the flood risk listCM20 1WG: not on the flood risk listCM20 1XA: not on the flood risk listCM20 1XN: not on the flood risk listCM20 1XP: not on the flood risk listCM20 1XR: not on the flood risk listCM20 1XS: not on the flood risk listCM20 1XW: not on the flood risk listCM20 1YS: not on the flood risk listCM20 1YU: not on the flood risk listCM20 1SR: high flood risk Little Parndon & Town Centre Map of every postcode in the CM20 1 sector, by flood risk Of the 161 postcodes in the CM20 1 sector that ONS places, 1 have a home or business at high risk and 160 are not on the Environment Agency's at-risk list. Places named: Little Parndon & Town Centre. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Little Parndon & Town Centre
  • A home or business at high risk: 1
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 160

Of the 161 postcodes in the CM20 1 sector that ONS places, 1 have a home or business at high risk and 160 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. Names in italics are council wards: we hold no town or village names here.

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

The postcodes at high risk

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

CM20 1SR1 at high risk

What do homes sell for in CM20 1?

Homes in CM20 1 sold for a typical £302,500 in the 12 months to August 2026, across 48 sales, up 0.8% on the 12 months before, HM Land Registry's figures show.

£302,500 typical price, the 12 months to August 2026
£300,000 12 months to August 2025
▲ up 0.8% on the 12 months before
  • Detached 2 sales, too few to price
  • Semi-detached 3 sales, too few to price
  • Terraced £330,000 25 sales
  • Flat or maisonette £195,000 18 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 CM20 1. 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 CM20 1

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.

CM20 1AACM20 1ABCM20 1AJCM20 1ANCM20 1AQCM20 1ARCM20 1ASCM20 1ATCM20 1AUCM20 1AWCM20 1AYCM20 1BACM20 1BBCM20 1BDCM20 1BLCM20 1BUCM20 1BWCM20 1BXCM20 1BZCM20 1DGCM20 1DRCM20 1DSCM20 1DTCM20 1DUCM20 1DWCM20 1DZCM20 1EACM20 1EBCM20 1EDCM20 1EECM20 1EFCM20 1EGCM20 1EJCM20 1ELCM20 1ENCM20 1EPCM20 1ESCM20 1ETCM20 1EYCM20 1FACM20 1FBCM20 1FDCM20 1FECM20 1FHCM20 1FJCM20 1FLCM20 1FNCM20 1FPCM20 1FQCM20 1FSCM20 1FTCM20 1FUCM20 1FWCM20 1HACM20 1HFCM20 1HGCM20 1HPCM20 1HXCM20 1JACM20 1JDCM20 1JFCM20 1JGCM20 1JHCM20 1JJCM20 1JLCM20 1JNCM20 1JQCM20 1LPCM20 1LSCM20 1NACM20 1NBCM20 1NLCM20 1NNCM20 1NPCM20 1NRCM20 1NSCM20 1NTCM20 1NUCM20 1NWCM20 1NXCM20 1NYCM20 1NZCM20 1PACM20 1PBCM20 1PDCM20 1PECM20 1PGCM20 1PHCM20 1PJCM20 1PLCM20 1PNCM20 1PPCM20 1PQCM20 1PRCM20 1PUCM20 1PWCM20 1PXCM20 1PYCM20 1PZCM20 1QACM20 1QBCM20 1QDCM20 1QECM20 1QFCM20 1QGCM20 1QPCM20 1QQCM20 1QRCM20 1QXCM20 1RDCM20 1RECM20 1RFCM20 1RGCM20 1RJCM20 1RLCM20 1RNCM20 1RPCM20 1RQCM20 1RRCM20 1RSCM20 1RTCM20 1RUCM20 1RWCM20 1SBCM20 1SDCM20 1SECM20 1SFCM20 1SGCM20 1SHCM20 1SJCM20 1SLCM20 1SNCM20 1SPCM20 1SQCM20 1SRCM20 1STCM20 1SUCM20 1SWCM20 1SXCM20 1SYCM20 1SZCM20 1TACM20 1TBCM20 1TDCM20 1TECM20 1THCM20 1TJCM20 1TLCM20 1TNCM20 1TPCM20 1TQCM20 1TWCM20 1WGCM20 1XACM20 1XNCM20 1XPCM20 1XRCM20 1XSCM20 1XWCM20 1YSCM20 1YU

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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