HA0 3 postcode sector in the HA0 district

HA0 3 is a sector of the HA0 district: every postcode that starts HA0 3. It has 201 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 HA0 3 sector, by flood risk

Map of every postcode in the HA0 3 sector, by flood risk Of the 201 postcodes in the HA0 3 sector that ONS places, 201 are not on the Environment Agency's at-risk list. Places named: Northwick Park, Sudbury. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A4090 HA0 3AA: not on the flood risk listHA0 3AB: not on the flood risk listHA0 3AD: not on the flood risk listHA0 3AE: not on the flood risk listHA0 3AF: not on the flood risk listHA0 3AG: not on the flood risk listHA0 3AH: not on the flood risk listHA0 3AJ: not on the flood risk listHA0 3AL: not on the flood risk listHA0 3AN: not on the flood risk listHA0 3AP: not on the flood risk listHA0 3AQ: not on the flood risk listHA0 3AR: not on the flood risk listHA0 3AS: not on the flood risk listHA0 3AT: not on the flood risk listHA0 3AU: not on the flood risk listHA0 3AW: not on the flood risk listHA0 3AX: not on the flood risk listHA0 3AY: not on the flood risk listHA0 3AZ: not on the flood risk listHA0 3BA: not on the flood risk listHA0 3BB: not on the flood risk listHA0 3BD: not on the flood risk listHA0 3BE: not on the flood risk listHA0 3BG: not on the flood risk listHA0 3BH: not on the flood risk listHA0 3BJ: not on the flood risk listHA0 3BL: not on the flood risk listHA0 3BN: not on the flood risk listHA0 3BP: not on the flood risk listHA0 3BQ: not on the flood risk listHA0 3BS: not on the flood risk listHA0 3BT: not on the flood risk listHA0 3BU: not on the flood risk listHA0 3BX: not on the flood risk listHA0 3BY: not on the flood risk listHA0 3BZ: not on the flood risk listHA0 3DA: not on the flood risk listHA0 3DB: not on the flood risk listHA0 3DD: not on the flood risk listHA0 3DE: not on the flood risk listHA0 3DF: not on the flood risk listHA0 3DG: not on the flood risk listHA0 3DH: not on the flood risk listHA0 3DJ: not on the flood risk listHA0 3DL: not on the flood risk listHA0 3DN: not on the flood risk listHA0 3DP: not on the flood risk listHA0 3DQ: not on the flood risk listHA0 3DR: not on the flood risk listHA0 3DW: not on the flood risk listHA0 3EA: not on the flood risk listHA0 3EE: not on the flood risk listHA0 3EF: not on the flood risk listHA0 3EG: not on the flood risk listHA0 3EH: not on the flood risk listHA0 3EJ: not on the flood risk listHA0 3EL: not on the flood risk listHA0 3EN: not on the flood risk listHA0 3EP: not on the flood risk listHA0 3EQ: not on the flood risk listHA0 3ER: not on the flood risk listHA0 3ES: not on the flood risk listHA0 3ET: not on the flood risk listHA0 3EU: not on the flood risk listHA0 3EW: not on the flood risk listHA0 3EY: not on the flood risk listHA0 3EZ: not on the flood risk listHA0 3FA: not on the flood risk listHA0 3FD: not on the flood risk listHA0 3FE: not on the flood risk listHA0 3FF: not on the flood risk listHA0 3FG: not on the flood risk listHA0 3HA: not on the flood risk listHA0 3HB: not on the flood risk listHA0 3HD: not on the flood risk listHA0 3HE: not on the flood risk listHA0 3HF: not on the flood risk listHA0 3HG: not on the flood risk listHA0 3HH: not on the flood risk listHA0 3HS: not on the flood risk listHA0 3HT: not on the flood risk listHA0 3HU: not on the flood risk listHA0 3HX: not on the flood risk listHA0 3JB: not on the flood risk listHA0 3JD: not on the flood risk listHA0 3JE: not on the flood risk listHA0 3JF: not on the flood risk listHA0 3JG: not on the flood risk listHA0 3JH: not on the flood risk listHA0 3JJ: not on the flood risk listHA0 3JL: not on the flood risk listHA0 3JN: not on the flood risk listHA0 3JP: not on the flood risk listHA0 3JQ: not on the flood risk listHA0 3JR: not on the flood risk listHA0 3JS: not on the flood risk listHA0 3JT: not on the flood risk listHA0 3JW: not on the flood risk listHA0 3LB: not on the flood risk listHA0 3LE: not on the flood risk listHA0 3LF: not on the flood risk listHA0 3LG: not on the flood risk listHA0 3LH: not on the flood risk listHA0 3LJ: not on the flood risk listHA0 3LL: not on the flood risk listHA0 3LN: not on the flood risk listHA0 3LP: not on the flood risk listHA0 3LQ: not on the flood risk listHA0 3LR: not on the flood risk listHA0 3LS: not on the flood risk listHA0 3LT: not on the flood risk listHA0 3LU: not on the flood risk listHA0 3LW: not on the flood risk listHA0 3NE: not on the flood risk listHA0 3NG: not on the flood risk listHA0 3NJ: not on the flood risk listHA0 3NL: not on the flood risk listHA0 3NN: not on the flood risk listHA0 3NP: not on the flood risk listHA0 3NR: not on the flood risk listHA0 3NS: not on the flood risk listHA0 3NT: not on the flood risk listHA0 3NU: not on the flood risk listHA0 3NW: not on the flood risk listHA0 3NX: not on the flood risk listHA0 3NY: not on the flood risk listHA0 3NZ: not on the flood risk listHA0 3PA: not on the flood risk listHA0 3PB: not on the flood risk listHA0 3PD: not on the flood risk listHA0 3PE: not on the flood risk listHA0 3PF: not on the flood risk listHA0 3PP: not on the flood risk listHA0 3PR: not on the flood risk listHA0 3PS: not on the flood risk listHA0 3PT: not on the flood risk listHA0 3PU: not on the flood risk listHA0 3PX: not on the flood risk listHA0 3PY: not on the flood risk listHA0 3PZ: not on the flood risk listHA0 3QA: not on the flood risk listHA0 3QB: not on the flood risk listHA0 3QD: not on the flood risk listHA0 3QE: not on the flood risk listHA0 3QF: not on the flood risk listHA0 3QG: not on the flood risk listHA0 3QH: not on the flood risk listHA0 3QJ: not on the flood risk listHA0 3QL: not on the flood risk listHA0 3QN: not on the flood risk listHA0 3QP: not on the flood risk listHA0 3QQ: not on the flood risk listHA0 3QR: not on the flood risk listHA0 3QS: not on the flood risk listHA0 3QU: not on the flood risk listHA0 3QW: not on the flood risk listHA0 3QX: not on the flood risk listHA0 3QY: not on the flood risk listHA0 3QZ: not on the flood risk listHA0 3RA: not on the flood risk listHA0 3RB: not on the flood risk listHA0 3RD: not on the flood risk listHA0 3RE: not on the flood risk listHA0 3RF: not on the flood risk listHA0 3RG: not on the flood risk listHA0 3RH: not on the flood risk listHA0 3RJ: not on the flood risk listHA0 3RQ: not on the flood risk listHA0 3RU: not on the flood risk listHA0 3RX: not on the flood risk listHA0 3RY: not on the flood risk listHA0 3RZ: not on the flood risk listHA0 3SA: not on the flood risk listHA0 3SB: not on the flood risk listHA0 3SD: not on the flood risk listHA0 3SE: not on the flood risk listHA0 3SF: not on the flood risk listHA0 3SG: not on the flood risk listHA0 3SH: not on the flood risk listHA0 3SJ: not on the flood risk listHA0 3SQ: not on the flood risk listHA0 3SU: not on the flood risk listHA0 3SX: not on the flood risk listHA0 3SY: not on the flood risk listHA0 3SZ: not on the flood risk listHA0 3TA: not on the flood risk listHA0 3TB: not on the flood risk listHA0 3TD: not on the flood risk listHA0 3TE: not on the flood risk listHA0 3TF: not on the flood risk listHA0 3TG: not on the flood risk listHA0 3TH: not on the flood risk listHA0 3TJ: not on the flood risk listHA0 3TL: not on the flood risk listHA0 3TN: not on the flood risk listHA0 3TP: not on the flood risk listHA0 3TQ: not on the flood risk listHA0 3ZJ: not on the flood risk list Northwick ParkSudbury Map of every postcode in the HA0 3 sector, by flood risk Of the 201 postcodes in the HA0 3 sector that ONS places, 201 are not on the Environment Agency's at-risk list. Places named: Northwick Park, Sudbury. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Northwick ParkSudbury
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 201

Of the 201 postcodes in the HA0 3 sector that ONS places, 201 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. 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

What do homes sell for in HA0 3?

Homes in HA0 3 sold for a typical £610,000 in the 12 months to August 2026, across 43 sales, up 18.4% on the 12 months before, HM Land Registry's figures show.

£610,000 typical price, the 12 months to August 2026
£515,000 12 months to August 2025
▲ up 18.4% on the 12 months before
  • Detached 4 sales, too few to price
  • Semi-detached £685,000 21 sales
  • Terraced £620,000 7 sales
  • Flat or maisonette £210,000 11 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 HA0 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 HA0 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.

HA0 3AAHA0 3ABHA0 3ADHA0 3AEHA0 3AFHA0 3AGHA0 3AHHA0 3AJHA0 3ALHA0 3ANHA0 3APHA0 3AQHA0 3ARHA0 3ASHA0 3ATHA0 3AUHA0 3AWHA0 3AXHA0 3AYHA0 3AZHA0 3BAHA0 3BBHA0 3BDHA0 3BEHA0 3BGHA0 3BHHA0 3BJHA0 3BLHA0 3BNHA0 3BPHA0 3BQHA0 3BSHA0 3BTHA0 3BUHA0 3BXHA0 3BYHA0 3BZHA0 3DAHA0 3DBHA0 3DDHA0 3DEHA0 3DFHA0 3DGHA0 3DHHA0 3DJHA0 3DLHA0 3DNHA0 3DPHA0 3DQHA0 3DRHA0 3DWHA0 3EAHA0 3EEHA0 3EFHA0 3EGHA0 3EHHA0 3EJHA0 3ELHA0 3ENHA0 3EPHA0 3EQHA0 3ERHA0 3ESHA0 3ETHA0 3EUHA0 3EWHA0 3EYHA0 3EZHA0 3FAHA0 3FDHA0 3FEHA0 3FFHA0 3FGHA0 3HAHA0 3HBHA0 3HDHA0 3HEHA0 3HFHA0 3HGHA0 3HHHA0 3HSHA0 3HTHA0 3HUHA0 3HXHA0 3HYHA0 3JBHA0 3JDHA0 3JEHA0 3JFHA0 3JGHA0 3JHHA0 3JJHA0 3JLHA0 3JNHA0 3JPHA0 3JQHA0 3JRHA0 3JSHA0 3JTHA0 3JWHA0 3LBHA0 3LEHA0 3LFHA0 3LGHA0 3LHHA0 3LJHA0 3LLHA0 3LNHA0 3LPHA0 3LQHA0 3LRHA0 3LSHA0 3LTHA0 3LUHA0 3LWHA0 3NEHA0 3NGHA0 3NJHA0 3NLHA0 3NNHA0 3NPHA0 3NRHA0 3NSHA0 3NTHA0 3NUHA0 3NWHA0 3NXHA0 3NYHA0 3NZHA0 3PAHA0 3PBHA0 3PDHA0 3PEHA0 3PFHA0 3PPHA0 3PRHA0 3PSHA0 3PTHA0 3PUHA0 3PXHA0 3PYHA0 3PZHA0 3QAHA0 3QBHA0 3QDHA0 3QEHA0 3QFHA0 3QGHA0 3QHHA0 3QJHA0 3QLHA0 3QNHA0 3QPHA0 3QQHA0 3QRHA0 3QSHA0 3QUHA0 3QWHA0 3QXHA0 3QYHA0 3QZHA0 3RAHA0 3RBHA0 3RDHA0 3REHA0 3RFHA0 3RGHA0 3RHHA0 3RJHA0 3RQHA0 3RUHA0 3RXHA0 3RYHA0 3RZHA0 3SAHA0 3SBHA0 3SDHA0 3SEHA0 3SFHA0 3SGHA0 3SHHA0 3SJHA0 3SQHA0 3SUHA0 3SXHA0 3SYHA0 3SZHA0 3TAHA0 3TBHA0 3TDHA0 3TEHA0 3TFHA0 3TGHA0 3THHA0 3TJHA0 3TLHA0 3TNHA0 3TPHA0 3TQHA0 3ZJHA0 3ZW

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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