CO3 8 postcode sector in the CO3 district

CO3 8 is a sector of the CO3 district: every postcode that starts CO3 8. It has 100 postcodes in use, one of them a large-user postcode. 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 CO3 8 sector, by flood risk

Map of every postcode in the CO3 8 sector, by flood risk Of the 100 postcodes in the CO3 8 sector that ONS places, 2 have a home or business at high risk, 2 are at medium risk at worst and 96 are not on the Environment Agency's at-risk list. Places named: Marks Tey and Layer, Stanway. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A12 CO3 8AA: not on the flood risk listCO3 8AB: not on the flood risk listCO3 8AD: not on the flood risk listCO3 8AE: not on the flood risk listCO3 8AF: not on the flood risk listCO3 8AG: not on the flood risk listCO3 8AH: not on the flood risk listCO3 8AJ: not on the flood risk listCO3 8AL: not on the flood risk listCO3 8AN: not on the flood risk listCO3 8AP: not on the flood risk listCO3 8AQ: not on the flood risk listCO3 8AR: not on the flood risk listCO3 8AS: not on the flood risk listCO3 8AU: not on the flood risk listCO3 8AW: not on the flood risk listCO3 8AX: not on the flood risk listCO3 8AY: not on the flood risk listCO3 8AZ: not on the flood risk listCO3 8BA: not on the flood risk listCO3 8BB: not on the flood risk listCO3 8BD: not on the flood risk listCO3 8BE: not on the flood risk listCO3 8BG: not on the flood risk listCO3 8BJ: not on the flood risk listCO3 8BL: not on the flood risk listCO3 8BN: not on the flood risk listCO3 8BP: not on the flood risk listCO3 8BQ: not on the flood risk listCO3 8BS: not on the flood risk listCO3 8BT: not on the flood risk listCO3 8BU: not on the flood risk listCO3 8BW: not on the flood risk listCO3 8BX: not on the flood risk listCO3 8BY: not on the flood risk listCO3 8BZ: not on the flood risk listCO3 8DA: not on the flood risk listCO3 8DB: not on the flood risk listCO3 8DD: not on the flood risk listCO3 8DE: not on the flood risk listCO3 8DF: not on the flood risk listCO3 8DG: not on the flood risk listCO3 8DH: not on the flood risk listCO3 8DJ: not on the flood risk listCO3 8DL: not on the flood risk listCO3 8DN: not on the flood risk listCO3 8DP: not on the flood risk listCO3 8DQ: not on the flood risk listCO3 8DR: not on the flood risk listCO3 8DS: not on the flood risk listCO3 8DT: not on the flood risk listCO3 8DU: not on the flood risk listCO3 8DW: not on the flood risk listCO3 8DX: not on the flood risk listCO3 8DY: not on the flood risk listCO3 8LP: not on the flood risk listCO3 8LR: not on the flood risk listCO3 8LS: not on the flood risk listCO3 8LT: not on the flood risk listCO3 8LX: not on the flood risk listCO3 8LY: not on the flood risk listCO3 8LZ: not on the flood risk listCO3 8NE: not on the flood risk listCO3 8NF: not on the flood risk listCO3 8NG: not on the flood risk listCO3 8NQ: not on the flood risk listCO3 8NZ: not on the flood risk listCO3 8PA: not on the flood risk listCO3 8PB: not on the flood risk listCO3 8PD: not on the flood risk listCO3 8PE: not on the flood risk listCO3 8PF: not on the flood risk listCO3 8PH: not on the flood risk listCO3 8PN: not on the flood risk listCO3 8RF: not on the flood risk listCO3 8RG: not on the flood risk listCO3 8RH: not on the flood risk listCO3 8RJ: not on the flood risk listCO3 8RQ: not on the flood risk listCO3 8SS: not on the flood risk listCO3 8WA: not on the flood risk listCO3 8WB: not on the flood risk listCO3 8WD: not on the flood risk listCO3 8WH: not on the flood risk listCO3 8WL: not on the flood risk listCO3 8WN: not on the flood risk listCO3 8WP: not on the flood risk listCO3 8WQ: not on the flood risk listCO3 8WR: not on the flood risk listCO3 8WT: not on the flood risk listCO3 8WU: not on the flood risk listCO3 8WX: not on the flood risk listCO3 8WZ: not on the flood risk listCO3 8ZB: not on the flood risk listCO3 8ZD: not on the flood risk listCO3 8ZE: not on the flood risk listCO3 8NA: medium flood risk at worstCO3 8ND: medium flood risk at worstCO3 8LU: high flood riskCO3 8NB: high flood risk Marks Tey and LayerStanway Map of every postcode in the CO3 8 sector, by flood risk Of the 100 postcodes in the CO3 8 sector that ONS places, 2 have a home or business at high risk, 2 are at medium risk at worst and 96 are not on the Environment Agency's at-risk list. Places named: Marks Tey and Layer, Stanway. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A12A1124 Marks Tey and LayerStanway
  • A home or business at high risk: 2
  • At medium risk at worst: 2
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 96

Of the 100 postcodes in the CO3 8 sector that ONS places, 2 have a home or business at high risk, 2 are at medium risk at worst and 96 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. 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.

CO3 8NB1 at high riskCO3 8LU1 at high risk

What do homes sell for in CO3 8?

Homes in CO3 8 sold for a typical £338,000 in the 12 months to August 2026, across 62 sales, down 3.4% on the 12 months before, HM Land Registry's figures show.

£338,000 typical price, the 12 months to August 2026
£350,000 12 months to August 2025
▼ down 3.4% on the 12 months before
  • Detached £400,000 22 sales
  • Semi-detached £322,500 24 sales
  • Terraced £325,000 7 sales
  • Flat or maisonette £170,000 9 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 CO3 8. 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 CO3 8

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.

CO3 8AACO3 8ABCO3 8ADCO3 8AECO3 8AFCO3 8AGCO3 8AHCO3 8AJCO3 8ALCO3 8ANCO3 8APCO3 8AQCO3 8ARCO3 8ASCO3 8AUCO3 8AWCO3 8AXCO3 8AYCO3 8AZCO3 8BACO3 8BBCO3 8BDCO3 8BECO3 8BGCO3 8BJCO3 8BLCO3 8BNCO3 8BPCO3 8BQCO3 8BSCO3 8BTCO3 8BUCO3 8BWCO3 8BXCO3 8BYCO3 8BZCO3 8DACO3 8DBCO3 8DDCO3 8DECO3 8DFCO3 8DGCO3 8DHCO3 8DJCO3 8DLCO3 8DNCO3 8DPCO3 8DQCO3 8DRCO3 8DSCO3 8DTCO3 8DUCO3 8DWCO3 8DXCO3 8DYCO3 8LPCO3 8LRCO3 8LSCO3 8LTCO3 8LUCO3 8LXCO3 8LYCO3 8LZCO3 8NACO3 8NBCO3 8NDCO3 8NECO3 8NFCO3 8NGCO3 8NQCO3 8NZCO3 8PACO3 8PBCO3 8PDCO3 8PECO3 8PFCO3 8PHCO3 8PNCO3 8RFCO3 8RGCO3 8RHCO3 8RJCO3 8RQCO3 8SSCO3 8WACO3 8WBCO3 8WDCO3 8WHCO3 8WLCO3 8WNCO3 8WPCO3 8WQCO3 8WRCO3 8WTCO3 8WUCO3 8WXCO3 8WZCO3 8ZBCO3 8ZDCO3 8ZE

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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