AL4 0 postcode sector in the AL4 district

AL4 0 is a sector of the AL4 district: every postcode that starts AL4 0. It has 291 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 AL4 0 sector, by flood risk

Map of every postcode in the AL4 0 sector, by flood risk Of the 291 postcodes in the AL4 0 sector that ONS places, 3 have a home or business at high risk, 1 are at medium risk at worst, 6 are at low risk at worst and 281 are not on the Environment Agency's at-risk list. Places named: Hill End, Colney Heath. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A1081A414A1001 AL4 0AA: not on the flood risk listAL4 0AB: not on the flood risk listAL4 0AD: not on the flood risk listAL4 0AE: not on the flood risk listAL4 0AG: not on the flood risk listAL4 0AH: not on the flood risk listAL4 0AJ: not on the flood risk listAL4 0AN: not on the flood risk listAL4 0AQ: not on the flood risk listAL4 0AS: not on the flood risk listAL4 0AT: not on the flood risk listAL4 0AW: not on the flood risk listAL4 0AY: not on the flood risk listAL4 0AZ: not on the flood risk listAL4 0BA: not on the flood risk listAL4 0BB: not on the flood risk listAL4 0BD: not on the flood risk listAL4 0BE: not on the flood risk listAL4 0BF: not on the flood risk listAL4 0BG: not on the flood risk listAL4 0BH: not on the flood risk listAL4 0BJ: not on the flood risk listAL4 0BL: not on the flood risk listAL4 0BN: not on the flood risk listAL4 0BP: not on the flood risk listAL4 0BQ: not on the flood risk listAL4 0BS: not on the flood risk listAL4 0BT: not on the flood risk listAL4 0BU: not on the flood risk listAL4 0BW: not on the flood risk listAL4 0BX: not on the flood risk listAL4 0BY: not on the flood risk listAL4 0DA: not on the flood risk listAL4 0DB: not on the flood risk listAL4 0DD: not on the flood risk listAL4 0DE: not on the flood risk listAL4 0DF: not on the flood risk listAL4 0DG: not on the flood risk listAL4 0DH: not on the flood risk listAL4 0DJ: not on the flood risk listAL4 0DL: not on the flood risk listAL4 0DN: not on the flood risk listAL4 0DP: not on the flood risk listAL4 0DQ: not on the flood risk listAL4 0DR: not on the flood risk listAL4 0DS: not on the flood risk listAL4 0DT: not on the flood risk listAL4 0DU: not on the flood risk listAL4 0DW: not on the flood risk listAL4 0DX: not on the flood risk listAL4 0DY: not on the flood risk listAL4 0DZ: not on the flood risk listAL4 0EB: not on the flood risk listAL4 0ED: not on the flood risk listAL4 0EE: not on the flood risk listAL4 0EF: not on the flood risk listAL4 0EG: not on the flood risk listAL4 0EH: not on the flood risk listAL4 0EJ: not on the flood risk listAL4 0EL: not on the flood risk listAL4 0EN: not on the flood risk listAL4 0EP: not on the flood risk listAL4 0EQ: not on the flood risk listAL4 0ER: not on the flood risk listAL4 0ES: not on the flood risk listAL4 0ET: not on the flood risk listAL4 0EU: not on the flood risk listAL4 0EW: not on the flood risk listAL4 0EX: not on the flood risk listAL4 0EY: not on the flood risk listAL4 0EZ: not on the flood risk listAL4 0FE: not on the flood risk listAL4 0FF: not on the flood risk listAL4 0FG: not on the flood risk listAL4 0FH: not on the flood risk listAL4 0FJ: not on the flood risk listAL4 0FL: not on the flood risk listAL4 0FN: not on the flood risk listAL4 0FQ: not on the flood risk listAL4 0FR: not on the flood risk listAL4 0FS: not on the flood risk listAL4 0FT: not on the flood risk listAL4 0FU: not on the flood risk listAL4 0FW: not on the flood risk listAL4 0FX: not on the flood risk listAL4 0FY: not on the flood risk listAL4 0FZ: not on the flood risk listAL4 0GB: not on the flood risk listAL4 0GD: not on the flood risk listAL4 0GE: not on the flood risk listAL4 0GF: not on the flood risk listAL4 0GG: not on the flood risk listAL4 0GH: not on the flood risk listAL4 0GL: not on the flood risk listAL4 0GN: not on the flood risk listAL4 0GP: not on the flood risk listAL4 0GQ: not on the flood risk listAL4 0GR: not on the flood risk listAL4 0GS: not on the flood risk listAL4 0GT: not on the flood risk listAL4 0GU: not on the flood risk listAL4 0GW: not on the flood risk listAL4 0GX: not on the flood risk listAL4 0GY: not on the flood risk listAL4 0HA: not on the flood risk listAL4 0HB: not on the flood risk listAL4 0HD: not on the flood risk listAL4 0HE: not on the flood risk listAL4 0HF: not on the flood risk listAL4 0HG: not on the flood risk listAL4 0HH: not on the flood risk listAL4 0HJ: not on the flood risk listAL4 0HL: not on the flood risk listAL4 0HN: not on the flood risk listAL4 0HP: not on the flood risk listAL4 0HQ: not on the flood risk listAL4 0HR: not on the flood risk listAL4 0HS: not on the flood risk listAL4 0HT: not on the flood risk listAL4 0HU: not on the flood risk listAL4 0HW: not on the flood risk listAL4 0HX: not on the flood risk listAL4 0HY: not on the flood risk listAL4 0HZ: not on the flood risk listAL4 0JA: not on the flood risk listAL4 0JB: not on the flood risk listAL4 0JE: not on the flood risk listAL4 0JF: not on the flood risk listAL4 0JG: not on the flood risk listAL4 0JH: not on the flood risk listAL4 0JJ: not on the flood risk listAL4 0JP: not on the flood risk listAL4 0JQ: not on the flood risk listAL4 0JR: not on the flood risk listAL4 0JS: not on the flood risk listAL4 0JY: not on the flood risk listAL4 0JZ: not on the flood risk listAL4 0LA: not on the flood risk listAL4 0LB: not on the flood risk listAL4 0LD: not on the flood risk listAL4 0LE: not on the flood risk listAL4 0LG: not on the flood risk listAL4 0LH: not on the flood risk listAL4 0LJ: not on the flood risk listAL4 0LN: not on the flood risk listAL4 0LP: not on the flood risk listAL4 0LQ: not on the flood risk listAL4 0LR: not on the flood risk listAL4 0LS: not on the flood risk listAL4 0LT: not on the flood risk listAL4 0LU: not on the flood risk listAL4 0LW: not on the flood risk listAL4 0LY: not on the flood risk listAL4 0ND: not on the flood risk listAL4 0NE: not on the flood risk listAL4 0NF: not on the flood risk listAL4 0NG: not on the flood risk listAL4 0NH: not on the flood risk listAL4 0NL: not on the flood risk listAL4 0NN: not on the flood risk listAL4 0NP: not on the flood risk listAL4 0NT: not on the flood risk listAL4 0NU: not on the flood risk listAL4 0NW: not on the flood risk listAL4 0NX: not on the flood risk listAL4 0NY: not on the flood risk listAL4 0NZ: not on the flood risk listAL4 0PD: not on the flood risk listAL4 0PH: not on the flood risk listAL4 0PJ: not on the flood risk listAL4 0PL: not on the flood risk listAL4 0PP: not on the flood risk listAL4 0PQ: not on the flood risk listAL4 0PR: not on the flood risk listAL4 0PS: not on the flood risk listAL4 0PT: not on the flood risk listAL4 0PU: not on the flood risk listAL4 0PW: not on the flood risk listAL4 0PX: not on the flood risk listAL4 0PY: not on the flood risk listAL4 0PZ: not on the flood risk listAL4 0QA: not on the flood risk listAL4 0QD: not on the flood risk listAL4 0QE: not on the flood risk listAL4 0QF: not on the flood risk listAL4 0QG: not on the flood risk listAL4 0QH: not on the flood risk listAL4 0QJ: not on the flood risk listAL4 0QL: not on the flood risk listAL4 0QN: not on the flood risk listAL4 0QP: not on the flood risk listAL4 0QQ: not on the flood risk listAL4 0QR: not on the flood risk listAL4 0QS: not on the flood risk listAL4 0QT: not on the flood risk listAL4 0QU: not on the flood risk listAL4 0QW: not on the flood risk listAL4 0RA: not on the flood risk listAL4 0RE: not on the flood risk listAL4 0RH: not on the flood risk listAL4 0RJ: not on the flood risk listAL4 0RL: not on the flood risk listAL4 0RN: not on the flood risk listAL4 0RP: not on the flood risk listAL4 0RQ: not on the flood risk listAL4 0RR: not on the flood risk listAL4 0RS: not on the flood risk listAL4 0RW: not on the flood risk listAL4 0RX: not on the flood risk listAL4 0RZ: not on the flood risk listAL4 0SA: not on the flood risk listAL4 0SB: not on the flood risk listAL4 0SD: not on the flood risk listAL4 0SE: not on the flood risk listAL4 0SF: not on the flood risk listAL4 0SH: not on the flood risk listAL4 0SL: not on the flood risk listAL4 0SN: not on the flood risk listAL4 0SP: not on the flood risk listAL4 0SQ: not on the flood risk listAL4 0SR: not on the flood risk listAL4 0SS: not on the flood risk listAL4 0ST: not on the flood risk listAL4 0SU: not on the flood risk listAL4 0SW: not on the flood risk listAL4 0SX: not on the flood risk listAL4 0SY: not on the flood risk listAL4 0SZ: not on the flood risk listAL4 0TA: not on the flood risk listAL4 0TB: not on the flood risk listAL4 0TD: not on the flood risk listAL4 0TE: not on the flood risk listAL4 0TF: not on the flood risk listAL4 0TG: not on the flood risk listAL4 0TH: not on the flood risk listAL4 0TJ: not on the flood risk listAL4 0TL: not on the flood risk listAL4 0TN: not on the flood risk listAL4 0TP: not on the flood risk listAL4 0TQ: not on the flood risk listAL4 0TR: not on the flood risk listAL4 0TS: not on the flood risk listAL4 0TT: not on the flood risk listAL4 0TU: not on the flood risk listAL4 0TX: not on the flood risk listAL4 0TY: not on the flood risk listAL4 0TZ: not on the flood risk listAL4 0UA: not on the flood risk listAL4 0UB: not on the flood risk listAL4 0UD: not on the flood risk listAL4 0UE: not on the flood risk listAL4 0UH: not on the flood risk listAL4 0UJ: not on the flood risk listAL4 0UL: not on the flood risk listAL4 0UN: not on the flood risk listAL4 0UP: not on the flood risk listAL4 0UQ: not on the flood risk listAL4 0UR: not on the flood risk listAL4 0UU: not on the flood risk listAL4 0UW: not on the flood risk listAL4 0UX: not on the flood risk listAL4 0UY: not on the flood risk listAL4 0UZ: not on the flood risk listAL4 0WA: not on the flood risk listAL4 0XA: not on the flood risk listAL4 0XB: not on the flood risk listAL4 0XD: not on the flood risk listAL4 0XE: not on the flood risk listAL4 0XF: not on the flood risk listAL4 0XG: not on the flood risk listAL4 0XH: not on the flood risk listAL4 0XL: not on the flood risk listAL4 0XP: not on the flood risk listAL4 0XR: not on the flood risk listAL4 0XS: not on the flood risk listAL4 0XT: not on the flood risk listAL4 0XW: not on the flood risk listAL4 0XX: not on the flood risk listAL4 0XZ: not on the flood risk listAL4 0NJ: low flood risk at worstAL4 0NQ: low flood risk at worstAL4 0NS: low flood risk at worstAL4 0PB: low flood risk at worstAL4 0RU: low flood risk at worstAL4 0RY: low flood risk at worstAL4 0RT: medium flood risk at worstAL4 0NR: high flood riskAL4 0PA: high flood riskAL4 0PG: high flood risk Hill EndColney Heath Map of every postcode in the AL4 0 sector, by flood risk Of the 291 postcodes in the AL4 0 sector that ONS places, 3 have a home or business at high risk, 1 are at medium risk at worst, 6 are at low risk at worst and 281 are not on the Environment Agency's at-risk list. Places named: Hill End, Colney Heath. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A1081 Hill EndColney Heath
  • A home or business at high risk: 3
  • At medium risk at worst: 1
  • At low risk at worst: 6
  • At very low risk only: 0
  • Not on the at-risk list: 281

Of the 291 postcodes in the AL4 0 sector that ONS places, 3 have a home or business at high risk, 1 are at medium risk at worst, 6 are at low risk at worst and 281 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

The postcodes at high risk

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

AL4 0NR2 at high riskAL4 0PA1 at high riskAL4 0PG1 at high risk

What do homes sell for in AL4 0?

Homes in AL4 0 sold for a typical £701,250 in the 12 months to August 2026, across 112 sales, down 3.6% on the 12 months before, HM Land Registry's figures show.

£701,250 typical price, the 12 months to August 2026
£727,500 12 months to August 2025
▼ down 3.6% on the 12 months before
  • Detached £790,000 31 sales
  • Semi-detached £710,000 51 sales
  • Terraced £543,000 21 sales
  • Flat or maisonette £310,000 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 AL4 0. 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 AL4 0

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.

AL4 0AAAL4 0ABAL4 0ADAL4 0AEAL4 0AGAL4 0AHAL4 0AJAL4 0ANAL4 0AQAL4 0ASAL4 0ATAL4 0AWAL4 0AYAL4 0AZAL4 0BAAL4 0BBAL4 0BDAL4 0BEAL4 0BFAL4 0BGAL4 0BHAL4 0BJAL4 0BLAL4 0BNAL4 0BPAL4 0BQAL4 0BSAL4 0BTAL4 0BUAL4 0BWAL4 0BXAL4 0BYAL4 0DAAL4 0DBAL4 0DDAL4 0DEAL4 0DFAL4 0DGAL4 0DHAL4 0DJAL4 0DLAL4 0DNAL4 0DPAL4 0DQAL4 0DRAL4 0DSAL4 0DTAL4 0DUAL4 0DWAL4 0DXAL4 0DYAL4 0DZAL4 0EAAL4 0EBAL4 0EDAL4 0EEAL4 0EFAL4 0EGAL4 0EHAL4 0EJAL4 0ELAL4 0ENAL4 0EPAL4 0EQAL4 0ERAL4 0ESAL4 0ETAL4 0EUAL4 0EWAL4 0EXAL4 0EYAL4 0EZAL4 0FEAL4 0FFAL4 0FGAL4 0FHAL4 0FJAL4 0FLAL4 0FNAL4 0FQAL4 0FRAL4 0FSAL4 0FTAL4 0FUAL4 0FWAL4 0FXAL4 0FYAL4 0FZAL4 0GBAL4 0GDAL4 0GEAL4 0GFAL4 0GGAL4 0GHAL4 0GLAL4 0GNAL4 0GPAL4 0GQAL4 0GRAL4 0GSAL4 0GTAL4 0GUAL4 0GWAL4 0GXAL4 0GYAL4 0HAAL4 0HBAL4 0HDAL4 0HEAL4 0HFAL4 0HGAL4 0HHAL4 0HJAL4 0HLAL4 0HNAL4 0HPAL4 0HQAL4 0HRAL4 0HSAL4 0HTAL4 0HUAL4 0HWAL4 0HXAL4 0HYAL4 0HZAL4 0JAAL4 0JBAL4 0JEAL4 0JFAL4 0JGAL4 0JHAL4 0JJAL4 0JPAL4 0JQAL4 0JRAL4 0JSAL4 0JYAL4 0JZAL4 0LAAL4 0LBAL4 0LDAL4 0LEAL4 0LGAL4 0LHAL4 0LJAL4 0LNAL4 0LPAL4 0LQAL4 0LRAL4 0LSAL4 0LTAL4 0LUAL4 0LWAL4 0LYAL4 0NDAL4 0NEAL4 0NFAL4 0NGAL4 0NHAL4 0NJAL4 0NLAL4 0NNAL4 0NPAL4 0NQAL4 0NRAL4 0NSAL4 0NTAL4 0NUAL4 0NWAL4 0NXAL4 0NYAL4 0NZAL4 0PAAL4 0PBAL4 0PDAL4 0PFAL4 0PGAL4 0PHAL4 0PJAL4 0PLAL4 0PPAL4 0PQAL4 0PRAL4 0PSAL4 0PTAL4 0PUAL4 0PWAL4 0PXAL4 0PYAL4 0PZAL4 0QAAL4 0QDAL4 0QEAL4 0QFAL4 0QGAL4 0QHAL4 0QJAL4 0QLAL4 0QNAL4 0QPAL4 0QQAL4 0QRAL4 0QSAL4 0QTAL4 0QUAL4 0QWAL4 0RAAL4 0REAL4 0RHAL4 0RJAL4 0RLAL4 0RNAL4 0RPAL4 0RQAL4 0RRAL4 0RSAL4 0RTAL4 0RUAL4 0RWAL4 0RXAL4 0RYAL4 0RZAL4 0SAAL4 0SBAL4 0SDAL4 0SEAL4 0SFAL4 0SHAL4 0SLAL4 0SNAL4 0SPAL4 0SQAL4 0SRAL4 0SSAL4 0STAL4 0SUAL4 0SWAL4 0SXAL4 0SYAL4 0SZAL4 0TAAL4 0TBAL4 0TDAL4 0TEAL4 0TFAL4 0TGAL4 0THAL4 0TJAL4 0TLAL4 0TNAL4 0TPAL4 0TQAL4 0TRAL4 0TSAL4 0TTAL4 0TUAL4 0TXAL4 0TYAL4 0TZAL4 0UAAL4 0UBAL4 0UDAL4 0UEAL4 0UHAL4 0UJAL4 0ULAL4 0UNAL4 0UPAL4 0UQAL4 0URAL4 0UUAL4 0UWAL4 0UXAL4 0UYAL4 0UZAL4 0WAAL4 0XAAL4 0XBAL4 0XDAL4 0XEAL4 0XFAL4 0XGAL4 0XHAL4 0XLAL4 0XPAL4 0XRAL4 0XSAL4 0XTAL4 0XWAL4 0XXAL4 0XZ

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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