NW3 4 postcode sector in the NW3 district

NW3 4 is a sector of the NW3 district: every postcode that starts NW3 4. It has 189 postcodes in use, 12 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 NW3 4 sector, by flood risk

Map of every postcode in the NW3 4 sector, by flood risk Of the 189 postcodes in the NW3 4 sector that ONS places, 189 are not on the Environment Agency's at-risk list. Places named: Belsize, Haverstock. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A502 NW3 4AA: not on the flood risk listNW3 4AB: not on the flood risk listNW3 4AE: not on the flood risk listNW3 4AF: not on the flood risk listNW3 4AG: not on the flood risk listNW3 4AH: not on the flood risk listNW3 4AJ: not on the flood risk listNW3 4AL: not on the flood risk listNW3 4AN: not on the flood risk listNW3 4AR: not on the flood risk listNW3 4AS: not on the flood risk listNW3 4AT: not on the flood risk listNW3 4AU: not on the flood risk listNW3 4AW: not on the flood risk listNW3 4AX: not on the flood risk listNW3 4AY: not on the flood risk listNW3 4BE: not on the flood risk listNW3 4BL: not on the flood risk listNW3 4BN: not on the flood risk listNW3 4BU: not on the flood risk listNW3 4BX: not on the flood risk listNW3 4BY: not on the flood risk listNW3 4DA: not on the flood risk listNW3 4DB: not on the flood risk listNW3 4DD: not on the flood risk listNW3 4DE: not on the flood risk listNW3 4DG: not on the flood risk listNW3 4DH: not on the flood risk listNW3 4DJ: not on the flood risk listNW3 4DL: not on the flood risk listNW3 4DN: not on the flood risk listNW3 4DR: not on the flood risk listNW3 4DU: not on the flood risk listNW3 4DX: not on the flood risk listNW3 4DY: not on the flood risk listNW3 4EA: not on the flood risk listNW3 4EB: not on the flood risk listNW3 4ED: not on the flood risk listNW3 4EE: not on the flood risk listNW3 4EG: not on the flood risk listNW3 4EH: not on the flood risk listNW3 4EJ: not on the flood risk listNW3 4ES: not on the flood risk listNW3 4ET: not on the flood risk listNW3 4EU: not on the flood risk listNW3 4EX: not on the flood risk listNW3 4EY: not on the flood risk listNW3 4HA: not on the flood risk listNW3 4HB: not on the flood risk listNW3 4HD: not on the flood risk listNW3 4HL: not on the flood risk listNW3 4HN: not on the flood risk listNW3 4HP: not on the flood risk listNW3 4HR: not on the flood risk listNW3 4HS: not on the flood risk listNW3 4HT: not on the flood risk listNW3 4HU: not on the flood risk listNW3 4HX: not on the flood risk listNW3 4HY: not on the flood risk listNW3 4JG: not on the flood risk listNW3 4JH: not on the flood risk listNW3 4JJ: not on the flood risk listNW3 4JL: not on the flood risk listNW3 4JN: not on the flood risk listNW3 4JP: not on the flood risk listNW3 4JR: not on the flood risk listNW3 4LA: not on the flood risk listNW3 4LB: not on the flood risk listNW3 4LD: not on the flood risk listNW3 4LH: not on the flood risk listNW3 4LJ: not on the flood risk listNW3 4LL: not on the flood risk listNW3 4LT: not on the flood risk listNW3 4LU: not on the flood risk listNW3 4LX: not on the flood risk listNW3 4LY: not on the flood risk listNW3 4NA: not on the flood risk listNW3 4NB: not on the flood risk listNW3 4ND: not on the flood risk listNW3 4NE: not on the flood risk listNW3 4NG: not on the flood risk listNW3 4NJ: not on the flood risk listNW3 4NS: not on the flood risk listNW3 4NT: not on the flood risk listNW3 4NU: not on the flood risk listNW3 4NX: not on the flood risk listNW3 4NY: not on the flood risk listNW3 4PA: not on the flood risk listNW3 4PB: not on the flood risk listNW3 4PD: not on the flood risk listNW3 4PE: not on the flood risk listNW3 4PG: not on the flood risk listNW3 4PH: not on the flood risk listNW3 4PR: not on the flood risk listNW3 4PS: not on the flood risk listNW3 4PT: not on the flood risk listNW3 4PU: not on the flood risk listNW3 4PX: not on the flood risk listNW3 4PY: not on the flood risk listNW3 4QB: not on the flood risk listNW3 4QD: not on the flood risk listNW3 4QE: not on the flood risk listNW3 4QG: not on the flood risk listNW3 4QL: not on the flood risk listNW3 4QP: not on the flood risk listNW3 4QS: not on the flood risk listNW3 4QT: not on the flood risk listNW3 4QX: not on the flood risk listNW3 4RB: not on the flood risk listNW3 4RE: not on the flood risk listNW3 4RG: not on the flood risk listNW3 4RJ: not on the flood risk listNW3 4RL: not on the flood risk listNW3 4RN: not on the flood risk listNW3 4RP: not on the flood risk listNW3 4RS: not on the flood risk listNW3 4RT: not on the flood risk listNW3 4RU: not on the flood risk listNW3 4RX: not on the flood risk listNW3 4RY: not on the flood risk listNW3 4SA: not on the flood risk listNW3 4SB: not on the flood risk listNW3 4SD: not on the flood risk listNW3 4SE: not on the flood risk listNW3 4SG: not on the flood risk listNW3 4SH: not on the flood risk listNW3 4SJ: not on the flood risk listNW3 4SL: not on the flood risk listNW3 4SN: not on the flood risk listNW3 4SP: not on the flood risk listNW3 4SQ: not on the flood risk listNW3 4SR: not on the flood risk listNW3 4SS: not on the flood risk listNW3 4ST: not on the flood risk listNW3 4SW: not on the flood risk listNW3 4SX: not on the flood risk listNW3 4SY: not on the flood risk listNW3 4TG: not on the flood risk listNW3 4TH: not on the flood risk listNW3 4TJ: not on the flood risk listNW3 4TL: not on the flood risk listNW3 4TN: not on the flood risk listNW3 4TP: not on the flood risk listNW3 4TR: not on the flood risk listNW3 4TT: not on the flood risk listNW3 4TX: not on the flood risk listNW3 4UE: not on the flood risk listNW3 4UH: not on the flood risk listNW3 4UJ: not on the flood risk listNW3 4UL: not on the flood risk listNW3 4UN: not on the flood risk listNW3 4UP: not on the flood risk listNW3 4UR: not on the flood risk listNW3 4UT: not on the flood risk listNW3 4UU: not on the flood risk listNW3 4UX: not on the flood risk listNW3 4UY: not on the flood risk listNW3 4XE: not on the flood risk listNW3 4XH: not on the flood risk listNW3 4XL: not on the flood risk listNW3 4XN: not on the flood risk listNW3 4XP: not on the flood risk listNW3 4XR: not on the flood risk listNW3 4XS: not on the flood risk listNW3 4XT: not on the flood risk listNW3 4XU: not on the flood risk listNW3 4XX: not on the flood risk listNW3 4XY: not on the flood risk listNW3 4YA: not on the flood risk listNW3 4YB: not on the flood risk listNW3 4YD: not on the flood risk list BelsizeHaverstock Map of every postcode in the NW3 4 sector, by flood risk Of the 189 postcodes in the NW3 4 sector that ONS places, 189 are not on the Environment Agency's at-risk list. Places named: Belsize, Haverstock. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. BelsizeHaverstock
  • 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: 189

Of the 189 postcodes in the NW3 4 sector that ONS places, 189 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 NW3 4?

Homes in NW3 4 sold for a typical £760,000 in the 12 months to August 2026, across 75 sales, down 16.5% on the 12 months before, HM Land Registry's figures show.

£760,000 typical price, the 12 months to August 2026
£910,500 12 months to August 2025
▼ down 16.5% on the 12 months before
  • Detached 1 sale, too few to price
  • Semi-detached 3 sales, too few to price
  • Terraced £2,175,000 5 sales
  • Flat or maisonette £687,500 66 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 NW3 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 NW3 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.

NW3 4AANW3 4ABNW3 4ADNW3 4AENW3 4AFNW3 4AGNW3 4AHNW3 4AJNW3 4ALNW3 4ANNW3 4ARNW3 4ASNW3 4ATNW3 4AUNW3 4AWNW3 4AXNW3 4AYNW3 4BENW3 4BGNW3 4BHNW3 4BJNW3 4BLNW3 4BNNW3 4BUNW3 4BXNW3 4BYNW3 4DANW3 4DBNW3 4DDNW3 4DENW3 4DGNW3 4DHNW3 4DJNW3 4DLNW3 4DNNW3 4DRNW3 4DUNW3 4DXNW3 4DYNW3 4EANW3 4EBNW3 4EDNW3 4EENW3 4EGNW3 4EHNW3 4EJNW3 4ESNW3 4ETNW3 4EUNW3 4EXNW3 4EYNW3 4GPNW3 4HANW3 4HBNW3 4HDNW3 4HLNW3 4HNNW3 4HPNW3 4HRNW3 4HSNW3 4HTNW3 4HUNW3 4HXNW3 4HYNW3 4JGNW3 4JHNW3 4JJNW3 4JLNW3 4JNNW3 4JPNW3 4JRNW3 4LANW3 4LBNW3 4LDNW3 4LHNW3 4LJNW3 4LLNW3 4LTNW3 4LUNW3 4LXNW3 4LYNW3 4NANW3 4NBNW3 4NDNW3 4NENW3 4NGNW3 4NJNW3 4NSNW3 4NTNW3 4NUNW3 4NXNW3 4NYNW3 4PANW3 4PBNW3 4PDNW3 4PENW3 4PGNW3 4PHNW3 4PRNW3 4PSNW3 4PTNW3 4PUNW3 4PXNW3 4PYNW3 4QBNW3 4QDNW3 4QENW3 4QGNW3 4QLNW3 4QPNW3 4QRNW3 4QSNW3 4QTNW3 4QXNW3 4RBNW3 4RENW3 4RGNW3 4RJNW3 4RLNW3 4RNNW3 4RPNW3 4RRNW3 4RSNW3 4RTNW3 4RUNW3 4RXNW3 4RYNW3 4SANW3 4SBNW3 4SDNW3 4SENW3 4SGNW3 4SHNW3 4SJNW3 4SLNW3 4SNNW3 4SPNW3 4SQNW3 4SRNW3 4SSNW3 4STNW3 4SUNW3 4SWNW3 4SXNW3 4SYNW3 4TGNW3 4THNW3 4TJNW3 4TLNW3 4TNNW3 4TPNW3 4TRNW3 4TTNW3 4TUNW3 4TXNW3 4TZNW3 4UENW3 4UHNW3 4UJNW3 4ULNW3 4UNNW3 4UPNW3 4URNW3 4UTNW3 4UUNW3 4UXNW3 4UYNW3 4WQNW3 4XANW3 4XBNW3 4XDNW3 4XENW3 4XHNW3 4XJNW3 4XLNW3 4XNNW3 4XPNW3 4XQNW3 4XRNW3 4XSNW3 4XTNW3 4XUNW3 4XXNW3 4XYNW3 4YANW3 4YBNW3 4YDNW3 4YGNW3 4ZA

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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