CO11 1 postcode sector in the CO11 district

CO11 1 is a sector of the CO11 district: every postcode that starts CO11 1. It has 266 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 CO11 1 sector, by flood risk

Map of every postcode in the CO11 1 sector, by flood risk Of the 266 postcodes in the CO11 1 sector that ONS places, 8 have a home or business at high risk, 9 are at medium risk at worst, 6 are at low risk at worst, 40 are at very low risk only and 203 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 5 postcodes at high or medium risk. Places named: Lawford, Mistley, Manningtree, Brantham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A137 CO11 1AB: not on the flood risk listCO11 1AN: not on the flood risk listCO11 1BD: not on the flood risk listCO11 1BE: not on the flood risk listCO11 1BG: not on the flood risk listCO11 1BH: not on the flood risk listCO11 1BJ: not on the flood risk listCO11 1BN: not on the flood risk listCO11 1BP: not on the flood risk listCO11 1BQ: not on the flood risk listCO11 1BS: not on the flood risk listCO11 1BT: not on the flood risk listCO11 1BU: not on the flood risk listCO11 1BW: not on the flood risk listCO11 1BX: not on the flood risk listCO11 1BY: not on the flood risk listCO11 1BZ: not on the flood risk listCO11 1DA: not on the flood risk listCO11 1DB: not on the flood risk listCO11 1DE: not on the flood risk listCO11 1DF: not on the flood risk listCO11 1DL: not on the flood risk listCO11 1DN: not on the flood risk listCO11 1DQ: not on the flood risk listCO11 1DR: not on the flood risk listCO11 1DS: not on the flood risk listCO11 1DT: not on the flood risk listCO11 1DU: not on the flood risk listCO11 1EJ: not on the flood risk listCO11 1EL: not on the flood risk listCO11 1EN: not on the flood risk listCO11 1ER: not on the flood risk listCO11 1ES: not on the flood risk listCO11 1EU: not on the flood risk listCO11 1EX: not on the flood risk listCO11 1EY: not on the flood risk listCO11 1FF: not on the flood risk listCO11 1FG: not on the flood risk listCO11 1FH: not on the flood risk listCO11 1FN: not on the flood risk listCO11 1FP: not on the flood risk listCO11 1FQ: not on the flood risk listCO11 1FR: not on the flood risk listCO11 1FS: not on the flood risk listCO11 1FT: not on the flood risk listCO11 1FU: not on the flood risk listCO11 1FW: not on the flood risk listCO11 1GA: not on the flood risk listCO11 1GD: not on the flood risk listCO11 1GH: not on the flood risk listCO11 1GJ: not on the flood risk listCO11 1GN: not on the flood risk listCO11 1GP: not on the flood risk listCO11 1GY: not on the flood risk listCO11 1HD: not on the flood risk listCO11 1HE: not on the flood risk listCO11 1HG: not on the flood risk listCO11 1HH: not on the flood risk listCO11 1HN: not on the flood risk listCO11 1HQ: not on the flood risk listCO11 1HR: not on the flood risk listCO11 1HS: not on the flood risk listCO11 1HT: not on the flood risk listCO11 1HU: not on the flood risk listCO11 1HW: not on the flood risk listCO11 1HY: not on the flood risk listCO11 1HZ: not on the flood risk listCO11 1JA: not on the flood risk listCO11 1JB: not on the flood risk listCO11 1JD: not on the flood risk listCO11 1JE: not on the flood risk listCO11 1JF: not on the flood risk listCO11 1JG: not on the flood risk listCO11 1JH: not on the flood risk listCO11 1JL: not on the flood risk listCO11 1JP: not on the flood risk listCO11 1JQ: not on the flood risk listCO11 1JR: not on the flood risk listCO11 1JZ: not on the flood risk listCO11 1LA: not on the flood risk listCO11 1LB: not on the flood risk listCO11 1LE: not on the flood risk listCO11 1LG: not on the flood risk listCO11 1LH: not on the flood risk listCO11 1LJ: not on the flood risk listCO11 1LL: not on the flood risk listCO11 1LN: not on the flood risk listCO11 1LP: not on the flood risk listCO11 1LT: not on the flood risk listCO11 1LU: not on the flood risk listCO11 1LW: not on the flood risk listCO11 1LX: not on the flood risk listCO11 1LY: not on the flood risk listCO11 1LZ: not on the flood risk listCO11 1NA: not on the flood risk listCO11 1NB: not on the flood risk listCO11 1ND: not on the flood risk listCO11 1NE: not on the flood risk listCO11 1NF: not on the flood risk listCO11 1NN: not on the flood risk listCO11 1NP: not on the flood risk listCO11 1NQ: not on the flood risk listCO11 1NR: not on the flood risk listCO11 1NS: not on the flood risk listCO11 1NU: not on the flood risk listCO11 1NX: not on the flood risk listCO11 1NY: not on the flood risk listCO11 1NZ: not on the flood risk listCO11 1PA: not on the flood risk listCO11 1PB: not on the flood risk listCO11 1PD: not on the flood risk listCO11 1PE: not on the flood risk listCO11 1PF: not on the flood risk listCO11 1PH: not on the flood risk listCO11 1PJ: not on the flood risk listCO11 1PL: not on the flood risk listCO11 1PN: not on the flood risk listCO11 1PP: not on the flood risk listCO11 1PR: not on the flood risk listCO11 1PT: not on the flood risk listCO11 1PU: not on the flood risk listCO11 1PW: not on the flood risk listCO11 1PX: not on the flood risk listCO11 1PZ: not on the flood risk listCO11 1QA: not on the flood risk listCO11 1QB: not on the flood risk listCO11 1QD: not on the flood risk listCO11 1QE: not on the flood risk listCO11 1QG: not on the flood risk listCO11 1QQ: not on the flood risk listCO11 1QS: not on the flood risk listCO11 1QX: not on the flood risk listCO11 1RA: not on the flood risk listCO11 1RD: not on the flood risk listCO11 1RJ: not on the flood risk listCO11 1RL: not on the flood risk listCO11 1RN: not on the flood risk listCO11 1RP: not on the flood risk listCO11 1RQ: not on the flood risk listCO11 1RR: not on the flood risk listCO11 1RS: not on the flood risk listCO11 1RT: not on the flood risk listCO11 1RU: not on the flood risk listCO11 1RX: not on the flood risk listCO11 1RY: not on the flood risk listCO11 1RZ: not on the flood risk listCO11 1SA: not on the flood risk listCO11 1SB: not on the flood risk listCO11 1SD: not on the flood risk listCO11 1SE: not on the flood risk listCO11 1SF: not on the flood risk listCO11 1SG: not on the flood risk listCO11 1SH: not on the flood risk listCO11 1SJ: not on the flood risk listCO11 1SL: not on the flood risk listCO11 1SN: not on the flood risk listCO11 1SP: not on the flood risk listCO11 1SS: not on the flood risk listCO11 1ST: not on the flood risk listCO11 1SW: not on the flood risk listCO11 1SY: not on the flood risk listCO11 1SZ: not on the flood risk listCO11 1TA: not on the flood risk listCO11 1TB: not on the flood risk listCO11 1TD: not on the flood risk listCO11 1TE: not on the flood risk listCO11 1TF: not on the flood risk listCO11 1TG: not on the flood risk listCO11 1TH: not on the flood risk listCO11 1TJ: not on the flood risk listCO11 1TL: not on the flood risk listCO11 1TN: not on the flood risk listCO11 1TP: not on the flood risk listCO11 1TQ: not on the flood risk listCO11 1TR: not on the flood risk listCO11 1TS: not on the flood risk listCO11 1TT: not on the flood risk listCO11 1TU: not on the flood risk listCO11 1TX: not on the flood risk listCO11 1TY: not on the flood risk listCO11 1UA: not on the flood risk listCO11 1UB: not on the flood risk listCO11 1UD: not on the flood risk listCO11 1UE: not on the flood risk listCO11 1UF: not on the flood risk listCO11 1UH: not on the flood risk listCO11 1UJ: not on the flood risk listCO11 1AA: very low flood risk onlyCO11 1AD: very low flood risk onlyCO11 1AG: very low flood risk onlyCO11 1AH: very low flood risk onlyCO11 1AJ: very low flood risk onlyCO11 1AP: very low flood risk onlyCO11 1AS: very low flood risk onlyCO11 1AU: very low flood risk onlyCO11 1AW: very low flood risk onlyCO11 1AZ: very low flood risk onlyCO11 1BA: very low flood risk onlyCO11 1BB: very low flood risk onlyCO11 1DH: very low flood risk onlyCO11 1DJ: very low flood risk onlyCO11 1DX: very low flood risk onlyCO11 1EB: very low flood risk onlyCO11 1ED: very low flood risk onlyCO11 1EE: very low flood risk onlyCO11 1EF: very low flood risk onlyCO11 1EG: very low flood risk onlyCO11 1EH: very low flood risk onlyCO11 1EP: very low flood risk onlyCO11 1EQ: very low flood risk onlyCO11 1EW: very low flood risk onlyCO11 1FJ: very low flood risk onlyCO11 1QF: very low flood risk onlyCO11 1QR: very low flood risk onlyCO11 1QZ: very low flood risk onlyCO11 1RW: very low flood risk onlyCO11 1UG: very low flood risk onlyCO11 1UN: very low flood risk onlyCO11 1UP: very low flood risk onlyCO11 1UQ: very low flood risk onlyCO11 1UR: very low flood risk onlyCO11 1US: very low flood risk onlyCO11 1UT: very low flood risk onlyCO11 1XE: very low flood risk onlyCO11 1XF: very low flood risk onlyCO11 1AT: low flood risk at worstCO11 1GG: low flood risk at worstCO11 1HL: low flood risk at worstCO11 1HP: low flood risk at worstCO11 1QW: low flood risk at worstCO11 1RF: low flood risk at worstCO11 1AR: medium flood risk at worstCO11 1FL: medium flood risk at worstCO11 1NH: medium flood risk at worstCO11 1QP: medium flood risk at worstCO11 1QU: medium flood risk at worstCO11 1QY: medium flood risk at worstCO11 1RE: medium flood risk at worstCO11 1RG: medium flood risk at worstCO11 1RH: medium flood risk at worstCO11 1AL: high flood riskCO11 1ET: high flood riskCO11 1HA: high flood riskCO11 1HB: high flood riskCO11 1NG: high flood riskCO11 1QJ: high flood riskCO11 1QL: high flood riskCO11 1QT: high flood risk LawfordMistleyManningtreeBrantham 5 postcodes at high or medium risk, outlined: this goes to CO11 1QL, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in the CO11 1 sector, by flood risk Of the 266 postcodes in the CO11 1 sector that ONS places, 8 have a home or business at high risk, 9 are at medium risk at worst, 6 are at low risk at worst, 40 are at very low risk only and 203 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 5 postcodes at high or medium risk. Places named: Lawford, Mistley, Manningtree. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. LawfordMistleyManningtree
  • A home or business at high risk: 8
  • At medium risk at worst: 9
  • At low risk at worst: 6
  • At very low risk only: 40
  • Not on the at-risk list: 203
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 266 postcodes in the CO11 1 sector that ONS places, 8 have a home or business at high risk, 9 are at medium risk at worst, 6 are at low risk at worst, 40 are at very low risk only and 203 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. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and 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

The postcodes at high risk

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

CO11 1HB13 at high riskCO11 1NG4 at high riskCO11 1QL2 at high riskCO11 1QT2 at high riskCO11 1AL1 at high riskCO11 1ET1 at high riskCO11 1HA1 at high riskCO11 1QJ1 at high risk

Where the postcodes at high or medium risk lie together

  • 5 postcodes at high or medium risk, outlined on the map. CO11 1QL, is the one with most homes and businesses at high risk.

What do homes sell for in CO11 1?

Homes in CO11 1 sold for a typical £280,000 in the 12 months to August 2026, across 99 sales, down 15.2% on the 12 months before, HM Land Registry's figures show.

£280,000 typical price, the 12 months to August 2026
£330,000 12 months to August 2025
▼ down 15.2% on the 12 months before
  • Detached £425,000 27 sales
  • Semi-detached £282,500 34 sales
  • Terraced £250,000 19 sales
  • Flat or maisonette £185,000 19 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 CO11 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 CO11 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.

CO11 1AACO11 1ABCO11 1ADCO11 1AGCO11 1AHCO11 1AJCO11 1ALCO11 1ANCO11 1APCO11 1AQCO11 1ARCO11 1ASCO11 1ATCO11 1AUCO11 1AWCO11 1AXCO11 1AZCO11 1BACO11 1BBCO11 1BDCO11 1BECO11 1BGCO11 1BHCO11 1BJCO11 1BLCO11 1BNCO11 1BPCO11 1BQCO11 1BSCO11 1BTCO11 1BUCO11 1BWCO11 1BXCO11 1BYCO11 1BZCO11 1DACO11 1DBCO11 1DDCO11 1DECO11 1DFCO11 1DHCO11 1DJCO11 1DLCO11 1DNCO11 1DQCO11 1DRCO11 1DSCO11 1DTCO11 1DUCO11 1DXCO11 1EBCO11 1EDCO11 1EECO11 1EFCO11 1EGCO11 1EHCO11 1EJCO11 1ELCO11 1ENCO11 1EPCO11 1EQCO11 1ERCO11 1ESCO11 1ETCO11 1EUCO11 1EWCO11 1EXCO11 1EYCO11 1FFCO11 1FGCO11 1FHCO11 1FJCO11 1FLCO11 1FNCO11 1FPCO11 1FQCO11 1FRCO11 1FSCO11 1FTCO11 1FUCO11 1FWCO11 1GACO11 1GDCO11 1GGCO11 1GHCO11 1GJCO11 1GNCO11 1GPCO11 1GYCO11 1HACO11 1HBCO11 1HDCO11 1HECO11 1HGCO11 1HHCO11 1HLCO11 1HNCO11 1HPCO11 1HQCO11 1HRCO11 1HSCO11 1HTCO11 1HUCO11 1HWCO11 1HXCO11 1HYCO11 1HZCO11 1JACO11 1JBCO11 1JDCO11 1JECO11 1JFCO11 1JGCO11 1JHCO11 1JJCO11 1JLCO11 1JNCO11 1JPCO11 1JQCO11 1JRCO11 1JSCO11 1JTCO11 1JWCO11 1JXCO11 1JZCO11 1LACO11 1LBCO11 1LDCO11 1LECO11 1LFCO11 1LGCO11 1LHCO11 1LJCO11 1LLCO11 1LNCO11 1LPCO11 1LQCO11 1LTCO11 1LUCO11 1LWCO11 1LXCO11 1LYCO11 1LZCO11 1NACO11 1NBCO11 1NDCO11 1NECO11 1NFCO11 1NGCO11 1NHCO11 1NNCO11 1NPCO11 1NQCO11 1NRCO11 1NSCO11 1NUCO11 1NXCO11 1NYCO11 1NZCO11 1PACO11 1PBCO11 1PDCO11 1PECO11 1PFCO11 1PHCO11 1PJCO11 1PLCO11 1PNCO11 1PPCO11 1PRCO11 1PTCO11 1PUCO11 1PWCO11 1PXCO11 1PZCO11 1QACO11 1QBCO11 1QDCO11 1QECO11 1QFCO11 1QGCO11 1QJCO11 1QLCO11 1QPCO11 1QQCO11 1QRCO11 1QSCO11 1QTCO11 1QUCO11 1QWCO11 1QXCO11 1QYCO11 1QZCO11 1RACO11 1RBCO11 1RDCO11 1RECO11 1RFCO11 1RGCO11 1RHCO11 1RJCO11 1RLCO11 1RNCO11 1RPCO11 1RQCO11 1RRCO11 1RSCO11 1RTCO11 1RUCO11 1RWCO11 1RXCO11 1RYCO11 1RZCO11 1SACO11 1SBCO11 1SDCO11 1SECO11 1SFCO11 1SGCO11 1SHCO11 1SJCO11 1SLCO11 1SNCO11 1SPCO11 1SRCO11 1SSCO11 1STCO11 1SUCO11 1SWCO11 1SXCO11 1SYCO11 1SZCO11 1TACO11 1TBCO11 1TDCO11 1TECO11 1TFCO11 1TGCO11 1THCO11 1TJCO11 1TLCO11 1TNCO11 1TPCO11 1TQCO11 1TRCO11 1TSCO11 1TTCO11 1TUCO11 1TXCO11 1TYCO11 1UACO11 1UBCO11 1UDCO11 1UECO11 1UFCO11 1UGCO11 1UHCO11 1UJCO11 1UNCO11 1UPCO11 1UQCO11 1URCO11 1USCO11 1UTCO11 1XECO11 1XF

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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