CO9 4 postcode sector in the CO9 district

CO9 4 is a sector of the CO9 district: every postcode that starts CO9 4. It has 176 postcodes in use.

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

Every postcode in the CO9 4 sector, by flood risk

Map of every postcode in the CO9 4 sector, by flood risk Of the 176 postcodes in the CO9 4 sector that ONS places, 18 have a home or business at high risk, 5 are at medium risk at worst, 13 are at low risk at worst and 140 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 10 postcodes at high or medium risk. Places named: Sible Hedingham, Great Yeldham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A1092 CO9 4AA: not on the flood risk listCO9 4AD: not on the flood risk listCO9 4AF: not on the flood risk listCO9 4AG: not on the flood risk listCO9 4AP: not on the flood risk listCO9 4BD: not on the flood risk listCO9 4BE: not on the flood risk listCO9 4BG: not on the flood risk listCO9 4BH: not on the flood risk listCO9 4BJ: not on the flood risk listCO9 4BL: not on the flood risk listCO9 4BN: not on the flood risk listCO9 4BP: not on the flood risk listCO9 4BS: not on the flood risk listCO9 4BT: not on the flood risk listCO9 4BU: not on the flood risk listCO9 4BX: not on the flood risk listCO9 4BY: not on the flood risk listCO9 4BZ: not on the flood risk listCO9 4DA: not on the flood risk listCO9 4DB: not on the flood risk listCO9 4DD: not on the flood risk listCO9 4DG: not on the flood risk listCO9 4DJ: not on the flood risk listCO9 4DQ: not on the flood risk listCO9 4DR: not on the flood risk listCO9 4DS: not on the flood risk listCO9 4DT: not on the flood risk listCO9 4DW: not on the flood risk listCO9 4DX: not on the flood risk listCO9 4DZ: not on the flood risk listCO9 4ED: not on the flood risk listCO9 4EE: not on the flood risk listCO9 4EF: not on the flood risk listCO9 4EG: not on the flood risk listCO9 4EH: not on the flood risk listCO9 4EJ: not on the flood risk listCO9 4EL: not on the flood risk listCO9 4EN: not on the flood risk listCO9 4ET: not on the flood risk listCO9 4EY: not on the flood risk listCO9 4FA: not on the flood risk listCO9 4FB: not on the flood risk listCO9 4FD: not on the flood risk listCO9 4FE: not on the flood risk listCO9 4HD: not on the flood risk listCO9 4HE: not on the flood risk listCO9 4HG: not on the flood risk listCO9 4HH: not on the flood risk listCO9 4HN: not on the flood risk listCO9 4HT: not on the flood risk listCO9 4HX: not on the flood risk listCO9 4JD: not on the flood risk listCO9 4JE: not on the flood risk listCO9 4JF: not on the flood risk listCO9 4JG: not on the flood risk listCO9 4JH: not on the flood risk listCO9 4JJ: not on the flood risk listCO9 4JL: not on the flood risk listCO9 4JP: not on the flood risk listCO9 4JR: not on the flood risk listCO9 4JS: not on the flood risk listCO9 4JT: not on the flood risk listCO9 4JU: not on the flood risk listCO9 4JX: not on the flood risk listCO9 4JY: not on the flood risk listCO9 4JZ: not on the flood risk listCO9 4LA: not on the flood risk listCO9 4LB: not on the flood risk listCO9 4LE: not on the flood risk listCO9 4LF: not on the flood risk listCO9 4LH: not on the flood risk listCO9 4LJ: not on the flood risk listCO9 4LL: not on the flood risk listCO9 4LN: not on the flood risk listCO9 4LR: not on the flood risk listCO9 4LS: not on the flood risk listCO9 4LZ: not on the flood risk listCO9 4NB: not on the flood risk listCO9 4ND: not on the flood risk listCO9 4NG: not on the flood risk listCO9 4NH: not on the flood risk listCO9 4NJ: not on the flood risk listCO9 4NN: not on the flood risk listCO9 4NQ: not on the flood risk listCO9 4NR: not on the flood risk listCO9 4NT: not on the flood risk listCO9 4NX: not on the flood risk listCO9 4NZ: not on the flood risk listCO9 4PA: not on the flood risk listCO9 4PE: not on the flood risk listCO9 4PG: not on the flood risk listCO9 4PH: not on the flood risk listCO9 4PU: not on the flood risk listCO9 4QA: not on the flood risk listCO9 4QG: not on the flood risk listCO9 4QJ: not on the flood risk listCO9 4QN: not on the flood risk listCO9 4QP: not on the flood risk listCO9 4QQ: not on the flood risk listCO9 4QS: not on the flood risk listCO9 4QT: not on the flood risk listCO9 4QX: not on the flood risk listCO9 4RB: not on the flood risk listCO9 4RG: not on the flood risk listCO9 4RH: not on the flood risk listCO9 4RJ: not on the flood risk listCO9 4RL: not on the flood risk listCO9 4RP: not on the flood risk listCO9 4RQ: not on the flood risk listCO9 4RR: not on the flood risk listCO9 4RS: not on the flood risk listCO9 4RT: not on the flood risk listCO9 4RU: not on the flood risk listCO9 4RX: not on the flood risk listCO9 4RZ: not on the flood risk listCO9 4SA: not on the flood risk listCO9 4SG: not on the flood risk listCO9 4SH: not on the flood risk listCO9 4SJ: not on the flood risk listCO9 4SL: not on the flood risk listCO9 4SP: not on the flood risk listCO9 4SR: not on the flood risk listCO9 4ST: not on the flood risk listCO9 4SW: not on the flood risk listCO9 4SY: not on the flood risk listCO9 4EA: low flood risk at worstCO9 4EB: low flood risk at worstCO9 4EU: low flood risk at worstCO9 4EX: low flood risk at worstCO9 4HA: low flood risk at worstCO9 4JN: low flood risk at worstCO9 4JQ: low flood risk at worstCO9 4LQ: low flood risk at worstCO9 4PD: low flood risk at worstCO9 4PJ: low flood risk at worstCO9 4QE: low flood risk at worstCO9 4QD: low flood risk at worstCO9 4BB: medium flood risk at worstCO9 4HS: medium flood risk at worstCO9 4PP: medium flood risk at worstCO9 4AB: high flood riskCO9 4AH: high flood riskCO9 4AJ: high flood riskCO9 4ER: high flood riskCO9 4HB: high flood riskCO9 4HJ: high flood riskCO9 4HP: high flood riskCO9 4HU: high flood riskCO9 4JA: high flood riskCO9 4LG: high flood riskCO9 4LX: high flood riskCO9 4NE: high flood riskCO9 4NP: high flood riskCO9 4PR: high flood riskCO9 4PT: high flood riskCO9 4PY: high flood riskCO9 4QL: high flood riskCO9 4RA: high flood risk Sible HedinghamGreat Yeldham 10 postcodes at high or medium risk, outlined: this goes to CO9 4PY, the one with most homes and businesses at high risk10 postcodes at high or medium risk Map of every postcode in the CO9 4 sector, by flood risk Of the 176 postcodes in the CO9 4 sector that ONS places, 18 have a home or business at high risk, 5 are at medium risk at worst, 13 are at low risk at worst and 140 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 10 postcodes at high or medium risk. Places named: Sible Hedingham, Great Yeldham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. Sible HedinghamGreat Yeldham
  • A home or business at high risk: 18
  • At medium risk at worst: 5
  • At low risk at worst: 13
  • At very low risk only: 0
  • Not on the at-risk list: 140
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 176 postcodes in the CO9 4 sector that ONS places, 18 have a home or business at high risk, 5 are at medium risk at worst, 13 are at low risk at worst and 140 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 260 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

18 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

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

CO9 4NE9 at high riskCO9 4AJ3 at high riskCO9 4HB3 at high riskCO9 4AH2 at high riskCO9 4PY2 at high riskCO9 4LX2 at high riskCO9 4NP2 at high riskCO9 4RA2 at high riskCO9 4ER1 at high riskCO9 4PR1 at high riskCO9 4HP1 at high riskCO9 4PT1 at high risk

Where the postcodes at high or medium risk lie together

  • 10 postcodes at high or medium risk, outlined on the map. CO9 4PY, is the one with most homes and businesses at high risk.

What do homes sell for in CO9 4?

Homes in CO9 4 sold for a typical £406,000 in the 12 months to August 2026, across 36 sales, up 7.5% on the 12 months before, HM Land Registry's figures show.

£406,000 typical price, the 12 months to August 2026
£377,500 12 months to August 2025
▲ up 7.5% on the 12 months before
  • Detached £517,500 18 sales
  • Semi-detached £382,500 11 sales
  • Terraced £290,000 5 sales
  • Flat or maisonette 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 CO9 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 CO9 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.

CO9 4AACO9 4ABCO9 4ADCO9 4AECO9 4AFCO9 4AGCO9 4AHCO9 4AJCO9 4APCO9 4BBCO9 4BDCO9 4BECO9 4BGCO9 4BHCO9 4BJCO9 4BLCO9 4BNCO9 4BPCO9 4BSCO9 4BTCO9 4BUCO9 4BWCO9 4BXCO9 4BYCO9 4BZCO9 4DACO9 4DBCO9 4DDCO9 4DGCO9 4DJCO9 4DQCO9 4DRCO9 4DSCO9 4DTCO9 4DWCO9 4DXCO9 4DZCO9 4EACO9 4EBCO9 4EDCO9 4EECO9 4EFCO9 4EGCO9 4EHCO9 4EJCO9 4ELCO9 4ENCO9 4ERCO9 4ETCO9 4EUCO9 4EXCO9 4EYCO9 4EZCO9 4FACO9 4FBCO9 4FDCO9 4FECO9 4HACO9 4HBCO9 4HDCO9 4HECO9 4HGCO9 4HHCO9 4HJCO9 4HNCO9 4HPCO9 4HSCO9 4HTCO9 4HUCO9 4HXCO9 4HYCO9 4HZCO9 4JACO9 4JBCO9 4JDCO9 4JECO9 4JFCO9 4JGCO9 4JHCO9 4JJCO9 4JLCO9 4JNCO9 4JPCO9 4JQCO9 4JRCO9 4JSCO9 4JTCO9 4JUCO9 4JWCO9 4JXCO9 4JYCO9 4JZCO9 4LACO9 4LBCO9 4LDCO9 4LECO9 4LFCO9 4LGCO9 4LHCO9 4LJCO9 4LLCO9 4LNCO9 4LQCO9 4LRCO9 4LSCO9 4LWCO9 4LXCO9 4LZCO9 4NBCO9 4NDCO9 4NECO9 4NGCO9 4NHCO9 4NJCO9 4NNCO9 4NPCO9 4NQCO9 4NRCO9 4NTCO9 4NXCO9 4NZCO9 4PACO9 4PDCO9 4PECO9 4PGCO9 4PHCO9 4PJCO9 4PPCO9 4PQCO9 4PRCO9 4PSCO9 4PTCO9 4PUCO9 4PXCO9 4PYCO9 4PZCO9 4QACO9 4QDCO9 4QECO9 4QGCO9 4QHCO9 4QJCO9 4QLCO9 4QNCO9 4QPCO9 4QQCO9 4QSCO9 4QTCO9 4QXCO9 4RACO9 4RBCO9 4RGCO9 4RHCO9 4RJCO9 4RLCO9 4RPCO9 4RQCO9 4RRCO9 4RSCO9 4RTCO9 4RUCO9 4RXCO9 4RZCO9 4SACO9 4SECO9 4SGCO9 4SHCO9 4SJCO9 4SLCO9 4SNCO9 4SPCO9 4SQCO9 4SRCO9 4STCO9 4SWCO9 4SY

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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