BH21 3 postcode sector in the BH21 district

BH21 3 is a sector of the BH21 district: every postcode that starts BH21 3. It has 283 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 BH21 3 sector, by flood risk

Map of every postcode in the BH21 3 sector, by flood risk Of the 283 postcodes in the BH21 3 sector that ONS places, 4 have a home or business at high risk, 5 are at medium risk at worst, 4 are at low risk at worst and 270 are not on the Environment Agency's at-risk list. Places named: Corfe Mullen, Bearwood, Merley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A350 BH21 3AA: not on the flood risk listBH21 3AB: not on the flood risk listBH21 3AH: not on the flood risk listBH21 3AJ: not on the flood risk listBH21 3AL: not on the flood risk listBH21 3AN: not on the flood risk listBH21 3AP: not on the flood risk listBH21 3AQ: not on the flood risk listBH21 3AT: not on the flood risk listBH21 3AW: not on the flood risk listBH21 3AX: not on the flood risk listBH21 3AY: not on the flood risk listBH21 3AZ: not on the flood risk listBH21 3BA: not on the flood risk listBH21 3BB: not on the flood risk listBH21 3BD: not on the flood risk listBH21 3BE: not on the flood risk listBH21 3BG: not on the flood risk listBH21 3BH: not on the flood risk listBH21 3BJ: not on the flood risk listBH21 3BN: not on the flood risk listBH21 3BQ: not on the flood risk listBH21 3BT: not on the flood risk listBH21 3BU: not on the flood risk listBH21 3BW: not on the flood risk listBH21 3BX: not on the flood risk listBH21 3BY: not on the flood risk listBH21 3BZ: not on the flood risk listBH21 3DA: not on the flood risk listBH21 3DB: not on the flood risk listBH21 3DD: not on the flood risk listBH21 3DE: not on the flood risk listBH21 3DF: not on the flood risk listBH21 3DG: not on the flood risk listBH21 3DH: not on the flood risk listBH21 3DJ: not on the flood risk listBH21 3DL: not on the flood risk listBH21 3DN: not on the flood risk listBH21 3DP: not on the flood risk listBH21 3DQ: not on the flood risk listBH21 3DR: not on the flood risk listBH21 3DS: not on the flood risk listBH21 3DU: not on the flood risk listBH21 3DW: not on the flood risk listBH21 3DX: not on the flood risk listBH21 3DY: not on the flood risk listBH21 3EA: not on the flood risk listBH21 3EB: not on the flood risk listBH21 3ED: not on the flood risk listBH21 3EE: not on the flood risk listBH21 3EG: not on the flood risk listBH21 3EH: not on the flood risk listBH21 3EJ: not on the flood risk listBH21 3EL: not on the flood risk listBH21 3EN: not on the flood risk listBH21 3EP: not on the flood risk listBH21 3ER: not on the flood risk listBH21 3ES: not on the flood risk listBH21 3ET: not on the flood risk listBH21 3EU: not on the flood risk listBH21 3EX: not on the flood risk listBH21 3EY: not on the flood risk listBH21 3EZ: not on the flood risk listBH21 3FA: not on the flood risk listBH21 3FB: not on the flood risk listBH21 3FD: not on the flood risk listBH21 3FJ: not on the flood risk listBH21 3FQ: not on the flood risk listBH21 3FT: not on the flood risk listBH21 3FU: not on the flood risk listBH21 3FY: not on the flood risk listBH21 3FZ: not on the flood risk listBH21 3HA: not on the flood risk listBH21 3HB: not on the flood risk listBH21 3HD: not on the flood risk listBH21 3HE: not on the flood risk listBH21 3HF: not on the flood risk listBH21 3HG: not on the flood risk listBH21 3HJ: not on the flood risk listBH21 3HL: not on the flood risk listBH21 3HN: not on the flood risk listBH21 3HP: not on the flood risk listBH21 3HQ: not on the flood risk listBH21 3HR: not on the flood risk listBH21 3HS: not on the flood risk listBH21 3HT: not on the flood risk listBH21 3HU: not on the flood risk listBH21 3HW: not on the flood risk listBH21 3HX: not on the flood risk listBH21 3HY: not on the flood risk listBH21 3HZ: not on the flood risk listBH21 3JB: not on the flood risk listBH21 3JD: not on the flood risk listBH21 3JE: not on the flood risk listBH21 3JF: not on the flood risk listBH21 3JG: not on the flood risk listBH21 3JH: not on the flood risk listBH21 3JJ: not on the flood risk listBH21 3JL: not on the flood risk listBH21 3JS: not on the flood risk listBH21 3JT: not on the flood risk listBH21 3JU: not on the flood risk listBH21 3JX: not on the flood risk listBH21 3JY: not on the flood risk listBH21 3JZ: not on the flood risk listBH21 3LA: not on the flood risk listBH21 3LB: not on the flood risk listBH21 3LD: not on the flood risk listBH21 3LE: not on the flood risk listBH21 3LJ: not on the flood risk listBH21 3LL: not on the flood risk listBH21 3LN: not on the flood risk listBH21 3LP: not on the flood risk listBH21 3LQ: not on the flood risk listBH21 3LS: not on the flood risk listBH21 3LT: not on the flood risk listBH21 3LU: not on the flood risk listBH21 3LW: not on the flood risk listBH21 3LX: not on the flood risk listBH21 3LY: not on the flood risk listBH21 3LZ: not on the flood risk listBH21 3NA: not on the flood risk listBH21 3NB: not on the flood risk listBH21 3ND: not on the flood risk listBH21 3NE: not on the flood risk listBH21 3NF: not on the flood risk listBH21 3NG: not on the flood risk listBH21 3NH: not on the flood risk listBH21 3NJ: not on the flood risk listBH21 3NL: not on the flood risk listBH21 3NN: not on the flood risk listBH21 3NP: not on the flood risk listBH21 3NQ: not on the flood risk listBH21 3NR: not on the flood risk listBH21 3NS: not on the flood risk listBH21 3NT: not on the flood risk listBH21 3NW: not on the flood risk listBH21 3NX: not on the flood risk listBH21 3NZ: not on the flood risk listBH21 3PA: not on the flood risk listBH21 3PB: not on the flood risk listBH21 3PD: not on the flood risk listBH21 3PE: not on the flood risk listBH21 3PF: not on the flood risk listBH21 3PG: not on the flood risk listBH21 3PH: not on the flood risk listBH21 3PJ: not on the flood risk listBH21 3PL: not on the flood risk listBH21 3PN: not on the flood risk listBH21 3PQ: not on the flood risk listBH21 3PR: not on the flood risk listBH21 3PT: not on the flood risk listBH21 3PW: not on the flood risk listBH21 3PX: not on the flood risk listBH21 3PY: not on the flood risk listBH21 3PZ: not on the flood risk listBH21 3QB: not on the flood risk listBH21 3QD: not on the flood risk listBH21 3QE: not on the flood risk listBH21 3QF: not on the flood risk listBH21 3QH: not on the flood risk listBH21 3QJ: not on the flood risk listBH21 3QL: not on the flood risk listBH21 3QN: not on the flood risk listBH21 3QP: not on the flood risk listBH21 3QQ: not on the flood risk listBH21 3QS: not on the flood risk listBH21 3QT: not on the flood risk listBH21 3QU: not on the flood risk listBH21 3QW: not on the flood risk listBH21 3QX: not on the flood risk listBH21 3QY: not on the flood risk listBH21 3QZ: not on the flood risk listBH21 3RA: not on the flood risk listBH21 3RB: not on the flood risk listBH21 3RD: not on the flood risk listBH21 3RE: not on the flood risk listBH21 3RF: not on the flood risk listBH21 3RL: not on the flood risk listBH21 3RN: not on the flood risk listBH21 3RP: not on the flood risk listBH21 3RR: not on the flood risk listBH21 3RS: not on the flood risk listBH21 3RT: not on the flood risk listBH21 3RU: not on the flood risk listBH21 3RW: not on the flood risk listBH21 3RX: not on the flood risk listBH21 3RY: not on the flood risk listBH21 3RZ: not on the flood risk listBH21 3SA: not on the flood risk listBH21 3SB: not on the flood risk listBH21 3SD: not on the flood risk listBH21 3SE: not on the flood risk listBH21 3SF: not on the flood risk listBH21 3SJ: not on the flood risk listBH21 3SL: not on the flood risk listBH21 3SN: not on the flood risk listBH21 3SP: not on the flood risk listBH21 3SQ: not on the flood risk listBH21 3SR: not on the flood risk listBH21 3ST: not on the flood risk listBH21 3SU: not on the flood risk listBH21 3SW: not on the flood risk listBH21 3SX: not on the flood risk listBH21 3SY: not on the flood risk listBH21 3SZ: not on the flood risk listBH21 3TA: not on the flood risk listBH21 3TB: not on the flood risk listBH21 3TD: not on the flood risk listBH21 3TE: not on the flood risk listBH21 3TF: not on the flood risk listBH21 3TG: not on the flood risk listBH21 3TH: not on the flood risk listBH21 3TJ: not on the flood risk listBH21 3TL: not on the flood risk listBH21 3TN: not on the flood risk listBH21 3TP: not on the flood risk listBH21 3TQ: not on the flood risk listBH21 3TR: not on the flood risk listBH21 3TS: not on the flood risk listBH21 3TT: not on the flood risk listBH21 3TU: not on the flood risk listBH21 3TX: not on the flood risk listBH21 3TY: not on the flood risk listBH21 3TZ: not on the flood risk listBH21 3UA: not on the flood risk listBH21 3UB: not on the flood risk listBH21 3UD: not on the flood risk listBH21 3UE: not on the flood risk listBH21 3UH: not on the flood risk listBH21 3UJ: not on the flood risk listBH21 3UP: not on the flood risk listBH21 3UQ: not on the flood risk listBH21 3UR: not on the flood risk listBH21 3US: not on the flood risk listBH21 3UW: not on the flood risk listBH21 3UX: not on the flood risk listBH21 3XA: not on the flood risk listBH21 3XB: not on the flood risk listBH21 3XD: not on the flood risk listBH21 3XE: not on the flood risk listBH21 3XF: not on the flood risk listBH21 3XG: not on the flood risk listBH21 3XH: not on the flood risk listBH21 3XJ: not on the flood risk listBH21 3AS: low flood risk at worstBH21 3RG: low flood risk at worstBH21 3RJ: low flood risk at worstBH21 3RQ: low flood risk at worstBH21 3AD: medium flood risk at worstBH21 3AE: medium flood risk at worstBH21 3AR: medium flood risk at worstBH21 3BS: medium flood risk at worstBH21 3YH: medium flood risk at worstBH21 3AF: high flood riskBH21 3AG: high flood riskBH21 3EF: high flood riskBH21 3RH: high flood risk Corfe MullenBearwoodMerley Map of every postcode in the BH21 3 sector, by flood risk Of the 283 postcodes in the BH21 3 sector that ONS places, 4 have a home or business at high risk, 5 are at medium risk at worst, 4 are at low risk at worst and 270 are not on the Environment Agency's at-risk list. Places named: Corfe Mullen, Merley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A350 Corfe MullenMerley
  • A home or business at high risk: 4
  • At medium risk at worst: 5
  • At low risk at worst: 4
  • At very low risk only: 0
  • Not on the at-risk list: 270

Of the 283 postcodes in the BH21 3 sector that ONS places, 4 have a home or business at high risk, 5 are at medium risk at worst, 4 are at low risk at worst and 270 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.

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Environment Agency flood risk, published 6 July 2026; roads, rivers and built-up areas: Ordnance Survey open maps. 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.

The postcodes at high risk

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

BH21 3RH8 at high riskBH21 3AF2 at high riskBH21 3AG1 at high riskBH21 3EF1 at high risk

What do homes sell for in BH21 3?

Homes in BH21 3 sold for a typical £395,000 in the 12 months to September 2026, across 113 sales, HM Land Registry's figures show. The 12 months before gave £386,250 from 150 sales: not a change larger than chance would explain, given which homes happened to sell.

£395,000 typical price, the 12 months to September 2026
£386,250 12 months to September 2025
  • Detached £500,000 57 sales
  • Semi-detached £334,000 26 sales
  • Terraced £330,000 21 sales
  • Flat or maisonette £180,000 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 BH21 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 October 2026.

Postcodes in BH21 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.

BH21 3AABH21 3ABBH21 3ADBH21 3AEBH21 3AFBH21 3AGBH21 3AHBH21 3AJBH21 3ALBH21 3ANBH21 3APBH21 3AQBH21 3ARBH21 3ASBH21 3ATBH21 3AUBH21 3AWBH21 3AXBH21 3AYBH21 3AZBH21 3BABH21 3BBBH21 3BDBH21 3BEBH21 3BGBH21 3BHBH21 3BJBH21 3BNBH21 3BPBH21 3BQBH21 3BSBH21 3BTBH21 3BUBH21 3BWBH21 3BXBH21 3BYBH21 3BZBH21 3DABH21 3DBBH21 3DDBH21 3DEBH21 3DFBH21 3DGBH21 3DHBH21 3DJBH21 3DLBH21 3DNBH21 3DPBH21 3DQBH21 3DRBH21 3DSBH21 3DUBH21 3DWBH21 3DXBH21 3DYBH21 3EABH21 3EBBH21 3EDBH21 3EEBH21 3EFBH21 3EGBH21 3EHBH21 3EJBH21 3ELBH21 3ENBH21 3EPBH21 3ERBH21 3ESBH21 3ETBH21 3EUBH21 3EXBH21 3EYBH21 3EZBH21 3FABH21 3FBBH21 3FDBH21 3FJBH21 3FQBH21 3FTBH21 3FUBH21 3FYBH21 3FZBH21 3HABH21 3HBBH21 3HDBH21 3HEBH21 3HFBH21 3HGBH21 3HHBH21 3HJBH21 3HLBH21 3HNBH21 3HPBH21 3HQBH21 3HRBH21 3HSBH21 3HTBH21 3HUBH21 3HWBH21 3HXBH21 3HYBH21 3HZBH21 3JABH21 3JBBH21 3JDBH21 3JEBH21 3JFBH21 3JGBH21 3JHBH21 3JJBH21 3JLBH21 3JQBH21 3JSBH21 3JTBH21 3JUBH21 3JXBH21 3JYBH21 3JZBH21 3LABH21 3LBBH21 3LDBH21 3LEBH21 3LGBH21 3LHBH21 3LJBH21 3LLBH21 3LNBH21 3LPBH21 3LQBH21 3LRBH21 3LSBH21 3LTBH21 3LUBH21 3LWBH21 3LXBH21 3LYBH21 3LZBH21 3NABH21 3NBBH21 3NDBH21 3NEBH21 3NFBH21 3NGBH21 3NHBH21 3NJBH21 3NLBH21 3NNBH21 3NPBH21 3NQBH21 3NRBH21 3NSBH21 3NTBH21 3NUBH21 3NWBH21 3NXBH21 3NYBH21 3NZBH21 3PABH21 3PBBH21 3PDBH21 3PEBH21 3PFBH21 3PGBH21 3PHBH21 3PJBH21 3PLBH21 3PNBH21 3PPBH21 3PQBH21 3PRBH21 3PSBH21 3PTBH21 3PUBH21 3PWBH21 3PXBH21 3PYBH21 3PZBH21 3QABH21 3QBBH21 3QDBH21 3QEBH21 3QFBH21 3QGBH21 3QHBH21 3QJBH21 3QLBH21 3QNBH21 3QPBH21 3QQBH21 3QRBH21 3QSBH21 3QTBH21 3QUBH21 3QWBH21 3QXBH21 3QYBH21 3QZBH21 3RABH21 3RBBH21 3RDBH21 3REBH21 3RFBH21 3RGBH21 3RHBH21 3RJBH21 3RLBH21 3RNBH21 3RPBH21 3RQBH21 3RRBH21 3RSBH21 3RTBH21 3RUBH21 3RWBH21 3RXBH21 3RYBH21 3RZBH21 3SABH21 3SBBH21 3SDBH21 3SEBH21 3SFBH21 3SGBH21 3SHBH21 3SJBH21 3SLBH21 3SNBH21 3SPBH21 3SQBH21 3SRBH21 3STBH21 3SUBH21 3SWBH21 3SXBH21 3SYBH21 3SZBH21 3TABH21 3TBBH21 3TDBH21 3TEBH21 3TFBH21 3TGBH21 3THBH21 3TJBH21 3TLBH21 3TNBH21 3TPBH21 3TQBH21 3TRBH21 3TSBH21 3TTBH21 3TUBH21 3TWBH21 3TXBH21 3TYBH21 3TZBH21 3UABH21 3UBBH21 3UDBH21 3UEBH21 3UFBH21 3UGBH21 3UHBH21 3UJBH21 3ULBH21 3UPBH21 3UQBH21 3URBH21 3USBH21 3UUBH21 3UWBH21 3UXBH21 3WDBH21 3XABH21 3XBBH21 3XDBH21 3XEBH21 3XFBH21 3XGBH21 3XHBH21 3XJBH21 3XQBH21 3YH

Source: ONS Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed.

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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Where the facts on this page come from

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.

Licence: Open Government Licence v3.0.

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