CO4 5 postcode sector in the CO4 district

CO4 5 is a sector of the CO4 district: every postcode that starts CO4 5. It has 394 postcodes in use, 5 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 CO4 5 sector, by flood risk

Map of every postcode in the CO4 5 sector, by flood risk Of the 394 postcodes in the CO4 5 sector that ONS places, 2 have a home or business at high risk, 1 are at medium risk at worst, 2 are at low risk at worst and 389 are not on the Environment Agency's at-risk list. Places named: Colchester, Great Horkesley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A134A12A1124A137 CO4 5AA: not on the flood risk listCO4 5AD: not on the flood risk listCO4 5AE: not on the flood risk listCO4 5AG: not on the flood risk listCO4 5AH: not on the flood risk listCO4 5AL: not on the flood risk listCO4 5AN: not on the flood risk listCO4 5AP: not on the flood risk listCO4 5AQ: not on the flood risk listCO4 5AR: not on the flood risk listCO4 5AS: not on the flood risk listCO4 5AT: not on the flood risk listCO4 5AU: not on the flood risk listCO4 5AW: not on the flood risk listCO4 5AX: not on the flood risk listCO4 5AY: not on the flood risk listCO4 5AZ: not on the flood risk listCO4 5BA: not on the flood risk listCO4 5BB: not on the flood risk listCO4 5BD: not on the flood risk listCO4 5BG: not on the flood risk listCO4 5BH: not on the flood risk listCO4 5BJ: not on the flood risk listCO4 5BL: not on the flood risk listCO4 5BN: not on the flood risk listCO4 5BP: not on the flood risk listCO4 5BS: not on the flood risk listCO4 5BT: not on the flood risk listCO4 5BU: not on the flood risk listCO4 5BY: not on the flood risk listCO4 5BZ: not on the flood risk listCO4 5DD: not on the flood risk listCO4 5DE: not on the flood risk listCO4 5DF: not on the flood risk listCO4 5DG: not on the flood risk listCO4 5DH: not on the flood risk listCO4 5DJ: not on the flood risk listCO4 5DL: not on the flood risk listCO4 5DN: not on the flood risk listCO4 5DP: not on the flood risk listCO4 5DR: not on the flood risk listCO4 5DS: not on the flood risk listCO4 5DT: not on the flood risk listCO4 5DU: not on the flood risk listCO4 5DW: not on the flood risk listCO4 5DX: not on the flood risk listCO4 5DY: not on the flood risk listCO4 5EA: not on the flood risk listCO4 5ED: not on the flood risk listCO4 5EE: not on the flood risk listCO4 5EF: not on the flood risk listCO4 5EG: not on the flood risk listCO4 5EH: not on the flood risk listCO4 5EJ: not on the flood risk listCO4 5EN: not on the flood risk listCO4 5EP: not on the flood risk listCO4 5EQ: not on the flood risk listCO4 5ER: not on the flood risk listCO4 5ES: not on the flood risk listCO4 5ET: not on the flood risk listCO4 5EU: not on the flood risk listCO4 5EW: not on the flood risk listCO4 5EX: not on the flood risk listCO4 5EY: not on the flood risk listCO4 5EZ: not on the flood risk listCO4 5FB: not on the flood risk listCO4 5FD: not on the flood risk listCO4 5FE: not on the flood risk listCO4 5FF: not on the flood risk listCO4 5FG: not on the flood risk listCO4 5FH: not on the flood risk listCO4 5FJ: not on the flood risk listCO4 5FL: not on the flood risk listCO4 5FN: not on the flood risk listCO4 5FP: not on the flood risk listCO4 5FQ: not on the flood risk listCO4 5FR: not on the flood risk listCO4 5FS: not on the flood risk listCO4 5FT: not on the flood risk listCO4 5FU: not on the flood risk listCO4 5FW: not on the flood risk listCO4 5FX: not on the flood risk listCO4 5FY: not on the flood risk listCO4 5FZ: not on the flood risk listCO4 5GA: not on the flood risk listCO4 5GB: not on the flood risk listCO4 5GD: not on the flood risk listCO4 5GE: not on the flood risk listCO4 5GG: not on the flood risk listCO4 5GH: not on the flood risk listCO4 5GJ: not on the flood risk listCO4 5GL: not on the flood risk listCO4 5GP: not on the flood risk listCO4 5GQ: not on the flood risk listCO4 5GS: not on the flood risk listCO4 5GT: not on the flood risk listCO4 5GU: not on the flood risk listCO4 5GW: not on the flood risk listCO4 5GX: not on the flood risk listCO4 5GY: not on the flood risk listCO4 5GZ: not on the flood risk listCO4 5HA: not on the flood risk listCO4 5HB: not on the flood risk listCO4 5HD: not on the flood risk listCO4 5HE: not on the flood risk listCO4 5HF: not on the flood risk listCO4 5HG: not on the flood risk listCO4 5HH: not on the flood risk listCO4 5HJ: not on the flood risk listCO4 5HL: not on the flood risk listCO4 5HN: not on the flood risk listCO4 5HP: not on the flood risk listCO4 5HR: not on the flood risk listCO4 5HS: not on the flood risk listCO4 5HT: not on the flood risk listCO4 5HU: not on the flood risk listCO4 5HW: not on the flood risk listCO4 5HX: not on the flood risk listCO4 5HY: not on the flood risk listCO4 5HZ: not on the flood risk listCO4 5JA: not on the flood risk listCO4 5JB: not on the flood risk listCO4 5JD: not on the flood risk listCO4 5JE: not on the flood risk listCO4 5JF: not on the flood risk listCO4 5JG: not on the flood risk listCO4 5JH: not on the flood risk listCO4 5JJ: not on the flood risk listCO4 5JL: not on the flood risk listCO4 5JN: not on the flood risk listCO4 5JP: not on the flood risk listCO4 5JQ: not on the flood risk listCO4 5JR: not on the flood risk listCO4 5JS: not on the flood risk listCO4 5JT: not on the flood risk listCO4 5JU: not on the flood risk listCO4 5JW: not on the flood risk listCO4 5JX: not on the flood risk listCO4 5JY: not on the flood risk listCO4 5JZ: not on the flood risk listCO4 5LA: not on the flood risk listCO4 5LE: not on the flood risk listCO4 5LF: not on the flood risk listCO4 5LG: not on the flood risk listCO4 5LH: not on the flood risk listCO4 5LJ: not on the flood risk listCO4 5LL: not on the flood risk listCO4 5LN: not on the flood risk listCO4 5LP: not on the flood risk listCO4 5LR: not on the flood risk listCO4 5LS: not on the flood risk listCO4 5LT: not on the flood risk listCO4 5LU: not on the flood risk listCO4 5LX: not on the flood risk listCO4 5LY: not on the flood risk listCO4 5LZ: not on the flood risk listCO4 5NA: not on the flood risk listCO4 5NB: not on the flood risk listCO4 5ND: not on the flood risk listCO4 5NE: not on the flood risk listCO4 5NG: not on the flood risk listCO4 5NH: not on the flood risk listCO4 5NJ: not on the flood risk listCO4 5NL: not on the flood risk listCO4 5NN: not on the flood risk listCO4 5NP: not on the flood risk listCO4 5NQ: not on the flood risk listCO4 5NR: not on the flood risk listCO4 5NS: not on the flood risk listCO4 5NT: not on the flood risk listCO4 5NU: not on the flood risk listCO4 5NW: not on the flood risk listCO4 5NX: not on the flood risk listCO4 5NY: not on the flood risk listCO4 5NZ: not on the flood risk listCO4 5PA: not on the flood risk listCO4 5PB: not on the flood risk listCO4 5PD: not on the flood risk listCO4 5PE: not on the flood risk listCO4 5PF: not on the flood risk listCO4 5PG: not on the flood risk listCO4 5PH: not on the flood risk listCO4 5PJ: not on the flood risk listCO4 5PN: not on the flood risk listCO4 5PP: not on the flood risk listCO4 5PQ: not on the flood risk listCO4 5PR: not on the flood risk listCO4 5PT: not on the flood risk listCO4 5PU: not on the flood risk listCO4 5PW: not on the flood risk listCO4 5PX: not on the flood risk listCO4 5PY: not on the flood risk listCO4 5PZ: not on the flood risk listCO4 5QA: not on the flood risk listCO4 5QB: not on the flood risk listCO4 5QD: not on the flood risk listCO4 5QE: not on the flood risk listCO4 5QF: not on the flood risk listCO4 5QG: not on the flood risk listCO4 5QH: not on the flood risk listCO4 5QJ: not on the flood risk listCO4 5QL: not on the flood risk listCO4 5QN: not on the flood risk listCO4 5QQ: not on the flood risk listCO4 5QR: not on the flood risk listCO4 5QS: not on the flood risk listCO4 5QT: not on the flood risk listCO4 5QU: not on the flood risk listCO4 5QW: not on the flood risk listCO4 5QX: not on the flood risk listCO4 5QY: not on the flood risk listCO4 5QZ: not on the flood risk listCO4 5RA: not on the flood risk listCO4 5RB: not on the flood risk listCO4 5RD: not on the flood risk listCO4 5RE: not on the flood risk listCO4 5RF: not on the flood risk listCO4 5RG: not on the flood risk listCO4 5RH: not on the flood risk listCO4 5RJ: not on the flood risk listCO4 5RL: not on the flood risk listCO4 5RN: not on the flood risk listCO4 5RP: not on the flood risk listCO4 5RQ: not on the flood risk listCO4 5RR: not on the flood risk listCO4 5RS: not on the flood risk listCO4 5RT: not on the flood risk listCO4 5RU: not on the flood risk listCO4 5RW: not on the flood risk listCO4 5RX: not on the flood risk listCO4 5RZ: not on the flood risk listCO4 5SA: not on the flood risk listCO4 5SB: not on the flood risk listCO4 5SD: not on the flood risk listCO4 5SE: not on the flood risk listCO4 5SF: not on the flood risk listCO4 5SG: not on the flood risk listCO4 5SH: not on the flood risk listCO4 5SJ: not on the flood risk listCO4 5SL: not on the flood risk listCO4 5SP: not on the flood risk listCO4 5SR: not on the flood risk listCO4 5ST: not on the flood risk listCO4 5SU: not on the flood risk listCO4 5SW: not on the flood risk listCO4 5SX: not on the flood risk listCO4 5SY: not on the flood risk listCO4 5SZ: not on the flood risk listCO4 5TD: not on the flood risk listCO4 5TE: not on the flood risk listCO4 5TF: not on the flood risk listCO4 5TG: not on the flood risk listCO4 5TH: not on the flood risk listCO4 5TJ: not on the flood risk listCO4 5TL: not on the flood risk listCO4 5TN: not on the flood risk listCO4 5TP: not on the flood risk listCO4 5TQ: not on the flood risk listCO4 5TR: not on the flood risk listCO4 5TS: not on the flood risk listCO4 5TT: not on the flood risk listCO4 5TU: not on the flood risk listCO4 5TW: not on the flood risk listCO4 5TX: not on the flood risk listCO4 5TY: not on the flood risk listCO4 5TZ: not on the flood risk listCO4 5UA: not on the flood risk listCO4 5UB: not on the flood risk listCO4 5UE: not on the flood risk listCO4 5UF: not on the flood risk listCO4 5UG: not on the flood risk listCO4 5UJ: not on the flood risk listCO4 5UL: not on the flood risk listCO4 5UN: not on the flood risk listCO4 5UP: not on the flood risk listCO4 5UQ: not on the flood risk listCO4 5US: not on the flood risk listCO4 5UT: not on the flood risk listCO4 5UU: not on the flood risk listCO4 5UW: not on the flood risk listCO4 5UX: not on the flood risk listCO4 5UY: not on the flood risk listCO4 5UZ: not on the flood risk listCO4 5WA: not on the flood risk listCO4 5WB: not on the flood risk listCO4 5WD: not on the flood risk listCO4 5WE: not on the flood risk listCO4 5WF: not on the flood risk listCO4 5WG: not on the flood risk listCO4 5WH: not on the flood risk listCO4 5WJ: not on the flood risk listCO4 5WP: not on the flood risk listCO4 5WR: not on the flood risk listCO4 5WS: not on the flood risk listCO4 5WT: not on the flood risk listCO4 5WU: not on the flood risk listCO4 5WX: not on the flood risk listCO4 5WY: not on the flood risk listCO4 5WZ: not on the flood risk listCO4 5XA: not on the flood risk listCO4 5XB: not on the flood risk listCO4 5XD: not on the flood risk listCO4 5XE: not on the flood risk listCO4 5XG: not on the flood risk listCO4 5XH: not on the flood risk listCO4 5XJ: not on the flood risk listCO4 5XL: not on the flood risk listCO4 5XP: not on the flood risk listCO4 5XQ: not on the flood risk listCO4 5XR: not on the flood risk listCO4 5XS: not on the flood risk listCO4 5XT: not on the flood risk listCO4 5XU: not on the flood risk listCO4 5XW: not on the flood risk listCO4 5XX: not on the flood risk listCO4 5XY: not on the flood risk listCO4 5YA: not on the flood risk listCO4 5YB: not on the flood risk listCO4 5YD: not on the flood risk listCO4 5YE: not on the flood risk listCO4 5YH: not on the flood risk listCO4 5YJ: not on the flood risk listCO4 5YL: not on the flood risk listCO4 5YN: not on the flood risk listCO4 5YP: not on the flood risk listCO4 5YQ: not on the flood risk listCO4 5YR: not on the flood risk listCO4 5YS: not on the flood risk listCO4 5YW: not on the flood risk listCO4 5YX: not on the flood risk listCO4 5YZ: not on the flood risk listCO4 5ZB: not on the flood risk listCO4 5ZD: not on the flood risk listCO4 5ZE: not on the flood risk listCO4 5ZF: not on the flood risk listCO4 5ZH: not on the flood risk listCO4 5ZJ: not on the flood risk listCO4 5ZL: not on the flood risk listCO4 5ZQ: not on the flood risk listCO4 5ZS: not on the flood risk listCO4 5ZT: not on the flood risk listCO4 5ZU: not on the flood risk listCO4 5ZX: not on the flood risk listCO4 5SN: low flood risk at worstCO4 5SS: low flood risk at worstCO4 5TA: medium flood risk at worstCO4 5PS: high flood riskCO4 5TB: high flood risk ColchesterGreat Horkesley Map of every postcode in the CO4 5 sector, by flood risk Of the 394 postcodes in the CO4 5 sector that ONS places, 2 have a home or business at high risk, 1 are at medium risk at worst, 2 are at low risk at worst and 389 are not on the Environment Agency's at-risk list. Places named: Colchester, Great Horkesley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A134A12A137 ColchesterGreat Horkesley
  • A home or business at high risk: 2
  • At medium risk at worst: 1
  • At low risk at worst: 2
  • At very low risk only: 0
  • Not on the at-risk list: 389

Of the 394 postcodes in the CO4 5 sector that ONS places, 2 have a home or business at high risk, 1 are at medium risk at worst, 2 are at low risk at worst and 389 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

The postcodes at high risk

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

CO4 5TB7 at high riskCO4 5PS1 at high risk

What do homes sell for in CO4 5?

Homes in CO4 5 sold for a typical £340,000 in the 12 months to August 2026, across 177 sales, up 1.6% on the 12 months before, HM Land Registry's figures show.

£340,000 typical price, the 12 months to August 2026
£334,592 12 months to August 2025
▲ up 1.6% on the 12 months before
  • Detached £485,000 49 sales
  • Semi-detached £348,750 52 sales
  • Terraced £310,000 45 sales
  • Flat or maisonette £176,500 31 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 CO4 5. 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 CO4 5

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.

CO4 5AACO4 5ABCO4 5ADCO4 5AECO4 5AFCO4 5AGCO4 5AHCO4 5AJCO4 5ALCO4 5ANCO4 5APCO4 5AQCO4 5ARCO4 5ASCO4 5ATCO4 5AUCO4 5AWCO4 5AXCO4 5AYCO4 5AZCO4 5BACO4 5BBCO4 5BDCO4 5BECO4 5BGCO4 5BHCO4 5BJCO4 5BLCO4 5BNCO4 5BPCO4 5BQCO4 5BSCO4 5BTCO4 5BUCO4 5BWCO4 5BXCO4 5BYCO4 5BZCO4 5DACO4 5DBCO4 5DDCO4 5DECO4 5DFCO4 5DGCO4 5DHCO4 5DJCO4 5DLCO4 5DNCO4 5DPCO4 5DQCO4 5DRCO4 5DSCO4 5DTCO4 5DUCO4 5DWCO4 5DXCO4 5DYCO4 5DZCO4 5EACO4 5EDCO4 5EECO4 5EFCO4 5EGCO4 5EHCO4 5EJCO4 5ELCO4 5ENCO4 5EPCO4 5EQCO4 5ERCO4 5ESCO4 5ETCO4 5EUCO4 5EWCO4 5EXCO4 5EYCO4 5EZCO4 5FACO4 5FBCO4 5FDCO4 5FECO4 5FFCO4 5FGCO4 5FHCO4 5FJCO4 5FLCO4 5FNCO4 5FPCO4 5FQCO4 5FRCO4 5FSCO4 5FTCO4 5FUCO4 5FWCO4 5FXCO4 5FYCO4 5FZCO4 5GACO4 5GBCO4 5GDCO4 5GECO4 5GFCO4 5GGCO4 5GHCO4 5GJCO4 5GLCO4 5GNCO4 5GPCO4 5GQCO4 5GRCO4 5GSCO4 5GTCO4 5GUCO4 5GWCO4 5GXCO4 5GYCO4 5GZCO4 5HACO4 5HBCO4 5HDCO4 5HECO4 5HFCO4 5HGCO4 5HHCO4 5HJCO4 5HLCO4 5HNCO4 5HPCO4 5HQCO4 5HRCO4 5HSCO4 5HTCO4 5HUCO4 5HWCO4 5HXCO4 5HYCO4 5HZCO4 5JACO4 5JBCO4 5JDCO4 5JECO4 5JFCO4 5JGCO4 5JHCO4 5JJCO4 5JLCO4 5JNCO4 5JPCO4 5JQCO4 5JRCO4 5JSCO4 5JTCO4 5JUCO4 5JWCO4 5JXCO4 5JYCO4 5JZCO4 5LACO4 5LBCO4 5LDCO4 5LECO4 5LFCO4 5LGCO4 5LHCO4 5LJCO4 5LLCO4 5LNCO4 5LPCO4 5LQCO4 5LRCO4 5LSCO4 5LTCO4 5LUCO4 5LWCO4 5LXCO4 5LYCO4 5LZCO4 5NACO4 5NBCO4 5NDCO4 5NECO4 5NFCO4 5NGCO4 5NHCO4 5NJCO4 5NLCO4 5NNCO4 5NPCO4 5NQCO4 5NRCO4 5NSCO4 5NTCO4 5NUCO4 5NWCO4 5NXCO4 5NYCO4 5NZCO4 5PACO4 5PBCO4 5PDCO4 5PECO4 5PFCO4 5PGCO4 5PHCO4 5PJCO4 5PLCO4 5PNCO4 5PPCO4 5PQCO4 5PRCO4 5PSCO4 5PTCO4 5PUCO4 5PWCO4 5PXCO4 5PYCO4 5PZCO4 5QACO4 5QBCO4 5QDCO4 5QECO4 5QFCO4 5QGCO4 5QHCO4 5QJCO4 5QLCO4 5QNCO4 5QPCO4 5QQCO4 5QRCO4 5QSCO4 5QTCO4 5QUCO4 5QWCO4 5QXCO4 5QYCO4 5QZCO4 5RACO4 5RBCO4 5RDCO4 5RECO4 5RFCO4 5RGCO4 5RHCO4 5RJCO4 5RLCO4 5RNCO4 5RPCO4 5RQCO4 5RRCO4 5RSCO4 5RTCO4 5RUCO4 5RWCO4 5RXCO4 5RYCO4 5RZCO4 5SACO4 5SBCO4 5SDCO4 5SECO4 5SFCO4 5SGCO4 5SHCO4 5SJCO4 5SLCO4 5SNCO4 5SPCO4 5SQCO4 5SRCO4 5SSCO4 5STCO4 5SUCO4 5SWCO4 5SXCO4 5SYCO4 5SZCO4 5TACO4 5TBCO4 5TDCO4 5TECO4 5TFCO4 5TGCO4 5THCO4 5TJCO4 5TLCO4 5TNCO4 5TPCO4 5TQCO4 5TRCO4 5TSCO4 5TTCO4 5TUCO4 5TWCO4 5TXCO4 5TYCO4 5TZCO4 5UACO4 5UBCO4 5UDCO4 5UECO4 5UFCO4 5UGCO4 5UHCO4 5UJCO4 5ULCO4 5UNCO4 5UPCO4 5UQCO4 5URCO4 5USCO4 5UTCO4 5UUCO4 5UWCO4 5UXCO4 5UYCO4 5UZCO4 5WACO4 5WBCO4 5WDCO4 5WECO4 5WFCO4 5WGCO4 5WHCO4 5WJCO4 5WLCO4 5WNCO4 5WPCO4 5WQCO4 5WRCO4 5WSCO4 5WTCO4 5WUCO4 5WWCO4 5WXCO4 5WYCO4 5WZCO4 5XACO4 5XBCO4 5XDCO4 5XECO4 5XFCO4 5XGCO4 5XHCO4 5XJCO4 5XLCO4 5XNCO4 5XPCO4 5XQCO4 5XRCO4 5XSCO4 5XTCO4 5XUCO4 5XWCO4 5XXCO4 5XYCO4 5XZCO4 5YACO4 5YBCO4 5YDCO4 5YECO4 5YFCO4 5YGCO4 5YHCO4 5YJCO4 5YLCO4 5YNCO4 5YPCO4 5YQCO4 5YRCO4 5YSCO4 5YTCO4 5YUCO4 5YWCO4 5YXCO4 5YZCO4 5ZACO4 5ZBCO4 5ZDCO4 5ZECO4 5ZFCO4 5ZGCO4 5ZHCO4 5ZJCO4 5ZLCO4 5ZNCO4 5ZPCO4 5ZQCO4 5ZRCO4 5ZSCO4 5ZTCO4 5ZUCO4 5ZWCO4 5ZX

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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