BN11 3 postcode sector in the BN11 district

BN11 3 is a sector of the BN11 district: every postcode that starts BN11 3. It has 187 postcodes in use, 10 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 BN11 3 sector, by flood risk

Map of every postcode in the BN11 3 sector, by flood risk Of the 187 postcodes in the BN11 3 sector that ONS places, 60 have a home or business at high risk, 1 are at medium risk at worst, 21 are at low risk at worst, 1 are at very low risk only and 104 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 52 postcodes at high or medium risk; 8 postcodes at high or medium risk. Places named: Central, Heene. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. BN11 3AU: not on the flood risk listBN11 3BP: not on the flood risk listBN11 3BU: not on the flood risk listBN11 3DB: not on the flood risk listBN11 3DH: not on the flood risk listBN11 3DP: not on the flood risk listBN11 3DT: not on the flood risk listBN11 3DZ: not on the flood risk listBN11 3EA: not on the flood risk listBN11 3ED: not on the flood risk listBN11 3EE: not on the flood risk listBN11 3EF: not on the flood risk listBN11 3EG: not on the flood risk listBN11 3EH: not on the flood risk listBN11 3EJ: not on the flood risk listBN11 3EL: not on the flood risk listBN11 3EU: not on the flood risk listBN11 3FA: not on the flood risk listBN11 3FB: not on the flood risk listBN11 3FD: not on the flood risk listBN11 3FE: not on the flood risk listBN11 3FF: not on the flood risk listBN11 3FH: not on the flood risk listBN11 3FL: not on the flood risk listBN11 3FN: not on the flood risk listBN11 3FP: not on the flood risk listBN11 3FQ: not on the flood risk listBN11 3FR: not on the flood risk listBN11 3FT: not on the flood risk listBN11 3FU: not on the flood risk listBN11 3GA: not on the flood risk listBN11 3GD: not on the flood risk listBN11 3HF: not on the flood risk listBN11 3HL: not on the flood risk listBN11 3HR: not on the flood risk listBN11 3HS: not on the flood risk listBN11 3HT: not on the flood risk listBN11 3HX: not on the flood risk listBN11 3HY: not on the flood risk listBN11 3JB: not on the flood risk listBN11 3JD: not on the flood risk listBN11 3JE: not on the flood risk listBN11 3JR: not on the flood risk listBN11 3JT: not on the flood risk listBN11 3JU: not on the flood risk listBN11 3JX: not on the flood risk listBN11 3LA: not on the flood risk listBN11 3LB: not on the flood risk listBN11 3LD: not on the flood risk listBN11 3LE: not on the flood risk listBN11 3LF: not on the flood risk listBN11 3LG: not on the flood risk listBN11 3LH: not on the flood risk listBN11 3LJ: not on the flood risk listBN11 3LL: not on the flood risk listBN11 3LN: not on the flood risk listBN11 3LP: not on the flood risk listBN11 3LW: not on the flood risk listBN11 3NE: not on the flood risk listBN11 3NF: not on the flood risk listBN11 3NH: not on the flood risk listBN11 3NJ: not on the flood risk listBN11 3NL: not on the flood risk listBN11 3NN: not on the flood risk listBN11 3NP: not on the flood risk listBN11 3NQ: not on the flood risk listBN11 3NR: not on the flood risk listBN11 3NT: not on the flood risk listBN11 3NU: not on the flood risk listBN11 3NW: not on the flood risk listBN11 3NY: not on the flood risk listBN11 3PB: not on the flood risk listBN11 3PE: not on the flood risk listBN11 3PF: not on the flood risk listBN11 3PG: not on the flood risk listBN11 3PL: not on the flood risk listBN11 3PQ: not on the flood risk listBN11 3PR: not on the flood risk listBN11 3PZ: not on the flood risk listBN11 3QE: not on the flood risk listBN11 3QL: not on the flood risk listBN11 3QN: not on the flood risk listBN11 3QW: not on the flood risk listBN11 3RA: not on the flood risk listBN11 3RB: not on the flood risk listBN11 3RD: not on the flood risk listBN11 3RE: not on the flood risk listBN11 3RF: not on the flood risk listBN11 3RG: not on the flood risk listBN11 3RL: not on the flood risk listBN11 3RN: not on the flood risk listBN11 3RS: not on the flood risk listBN11 3RT: not on the flood risk listBN11 3RU: not on the flood risk listBN11 3RW: not on the flood risk listBN11 3SB: not on the flood risk listBN11 3SD: not on the flood risk listBN11 3TB: not on the flood risk listBN11 3FJ: very low flood risk onlyBN11 3BL: low flood risk at worstBN11 3BT: low flood risk at worstBN11 3BX: low flood risk at worstBN11 3BY: low flood risk at worstBN11 3DE: low flood risk at worstBN11 3DF: low flood risk at worstBN11 3EZ: low flood risk at worstBN11 3EP: low flood risk at worstBN11 3ER: low flood risk at worstBN11 3GB: low flood risk at worstBN11 3GZ: low flood risk at worstBN11 3HH: low flood risk at worstBN11 3HN: low flood risk at worstBN11 3HP: low flood risk at worstBN11 3HW: low flood risk at worstBN11 3JJ: low flood risk at worstBN11 3JS: low flood risk at worstBN11 3LZ: low flood risk at worstBN11 3NZ: low flood risk at worstBN11 3QB: low flood risk at worstBN11 3DL: medium flood risk at worstBN11 3AA: high flood riskBN11 3AE: high flood riskBN11 3AJ: high flood riskBN11 3AL: high flood riskBN11 3AP: high flood riskBN11 3AR: high flood riskBN11 3AW: high flood riskBN11 3AX: high flood riskBN11 3AY: high flood riskBN11 3BA: high flood riskBN11 3BD: high flood riskBN11 3BE: high flood riskBN11 3BG: high flood riskBN11 3BN: high flood riskBN11 3BS: high flood riskBN11 3BW: high flood riskBN11 3BZ: high flood riskBN11 3DA: high flood riskBN11 3DN: high flood riskBN11 3DR: high flood riskBN11 3DS: high flood riskBN11 3DU: high flood riskBN11 3DW: high flood riskBN11 3EN: high flood riskBN11 3ET: high flood riskBN11 3FS: high flood riskBN11 3HA: high flood riskBN11 3HB: high flood riskBN11 3HD: high flood riskBN11 3HE: high flood riskBN11 3HG: high flood riskBN11 3LS: high flood riskBN11 3LT: high flood riskBN11 3LU: high flood riskBN11 3LX: high flood riskBN11 3ND: high flood riskBN11 3NG: high flood riskBN11 3NX: high flood riskBN11 3PA: high flood riskBN11 3PD: high flood riskBN11 3PH: high flood riskBN11 3PN: high flood riskBN11 3PP: high flood riskBN11 3PT: high flood riskBN11 3PU: high flood riskBN11 3PX: high flood riskBN11 3PY: high flood riskBN11 3QA: high flood riskBN11 3QD: high flood riskBN11 3QF: high flood riskBN11 3QG: high flood riskBN11 3QP: high flood riskBN11 3QR: high flood riskBN11 3QX: high flood riskBN11 3QY: high flood riskBN11 3QZ: high flood riskBN11 3SA: high flood risk CentralHeene 52 postcodes at high or medium risk, outlined: this goes to BN11 3DR, the one with most homes and businesses at high risk52 postcodes at high or medium risk Map of every postcode in the BN11 3 sector, by flood risk Of the 187 postcodes in the BN11 3 sector that ONS places, 60 have a home or business at high risk, 1 are at medium risk at worst, 21 are at low risk at worst, 1 are at very low risk only and 104 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 52 postcodes at high or medium risk; 8 postcodes at high or medium risk. Places named: Central, Heene. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. CentralHeene
  • A home or business at high risk: 60
  • At medium risk at worst: 1
  • At low risk at worst: 21
  • At very low risk only: 1
  • Not on the at-risk list: 104
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 187 postcodes in the BN11 3 sector that ONS places, 60 have a home or business at high risk, 1 are at medium risk at worst, 21 are at low risk at worst, 1 are at very low risk only and 104 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. 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

60 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.

BN11 3DR85 at high riskBN11 3LU83 at high riskBN11 3DW72 at high riskBN11 3HD54 at high riskBN11 3ET48 at high riskBN11 3QG48 at high riskBN11 3BG41 at high riskBN11 3ND31 at high riskBN11 3AA30 at high riskBN11 3PY29 at high riskBN11 3PT28 at high riskBN11 3BA26 at high risk

Where the postcodes at high or medium risk lie together

  • 52 postcodes at high or medium risk, outlined on the map. BN11 3DR, is the one with most homes and businesses at high risk.
  • 8 postcodes at high or medium risk, outlined on the map. BN11 3QY, is the one with most homes and businesses at high risk.

What do homes sell for in BN11 3?

Homes in BN11 3 sold for a typical £282,500 in the 12 months to August 2026, across 64 sales, up 13% on the 12 months before, HM Land Registry's figures show.

£282,500 typical price, the 12 months to August 2026
£250,000 12 months to August 2025
▲ up 13% on the 12 months before
  • Detached 3 sales, too few to price
  • Semi-detached 1 sale, too few to price
  • Terraced £410,000 9 sales
  • Flat or maisonette £260,500 51 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 BN11 3. 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 BN11 3

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.

BN11 3AABN11 3AEBN11 3AJBN11 3ALBN11 3APBN11 3ARBN11 3AUBN11 3AWBN11 3AXBN11 3AYBN11 3BABN11 3BDBN11 3BEBN11 3BGBN11 3BLBN11 3BNBN11 3BPBN11 3BSBN11 3BTBN11 3BUBN11 3BWBN11 3BXBN11 3BYBN11 3BZBN11 3DABN11 3DBBN11 3DEBN11 3DFBN11 3DHBN11 3DJBN11 3DLBN11 3DNBN11 3DPBN11 3DQBN11 3DRBN11 3DSBN11 3DTBN11 3DUBN11 3DWBN11 3DZBN11 3EABN11 3EBBN11 3EDBN11 3EEBN11 3EFBN11 3EGBN11 3EHBN11 3EJBN11 3ELBN11 3ENBN11 3EPBN11 3ERBN11 3ETBN11 3EUBN11 3EZBN11 3FABN11 3FBBN11 3FDBN11 3FEBN11 3FFBN11 3FHBN11 3FJBN11 3FLBN11 3FNBN11 3FPBN11 3FQBN11 3FRBN11 3FSBN11 3FTBN11 3FUBN11 3GABN11 3GBBN11 3GDBN11 3GZBN11 3HABN11 3HBBN11 3HDBN11 3HEBN11 3HFBN11 3HGBN11 3HHBN11 3HLBN11 3HNBN11 3HPBN11 3HRBN11 3HSBN11 3HTBN11 3HWBN11 3HXBN11 3HYBN11 3JBBN11 3JDBN11 3JEBN11 3JGBN11 3JJBN11 3JNBN11 3JRBN11 3JSBN11 3JTBN11 3JUBN11 3JXBN11 3LABN11 3LBBN11 3LDBN11 3LEBN11 3LFBN11 3LGBN11 3LHBN11 3LJBN11 3LLBN11 3LNBN11 3LPBN11 3LQBN11 3LSBN11 3LTBN11 3LUBN11 3LWBN11 3LXBN11 3LZBN11 3NDBN11 3NEBN11 3NFBN11 3NGBN11 3NHBN11 3NJBN11 3NLBN11 3NNBN11 3NPBN11 3NQBN11 3NRBN11 3NTBN11 3NUBN11 3NWBN11 3NXBN11 3NYBN11 3NZBN11 3PABN11 3PBBN11 3PDBN11 3PEBN11 3PFBN11 3PGBN11 3PHBN11 3PLBN11 3PNBN11 3PPBN11 3PQBN11 3PRBN11 3PTBN11 3PUBN11 3PXBN11 3PYBN11 3PZBN11 3QABN11 3QBBN11 3QDBN11 3QEBN11 3QFBN11 3QGBN11 3QLBN11 3QNBN11 3QPBN11 3QRBN11 3QSBN11 3QTBN11 3QUBN11 3QWBN11 3QXBN11 3QYBN11 3QZBN11 3RABN11 3RBBN11 3RDBN11 3REBN11 3RFBN11 3RGBN11 3RLBN11 3RNBN11 3RSBN11 3RTBN11 3RUBN11 3RWBN11 3SABN11 3SBBN11 3SDBN11 3TBBN11 3WJ

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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