L21 4 postcode sector in the L21 district

L21 4 is a sector of the L21 district: every postcode that starts L21 4. It has 39 postcodes in use, 2 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 L21 4 sector, by flood risk

Map of every postcode in the L21 4 sector, by flood risk Of the 39 postcodes in the L21 4 sector that ONS places, 39 are not on the Environment Agency's at-risk list. Places named: Bootle West. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A565 L21 4AB: not on the flood risk listL21 4LA: not on the flood risk listL21 4LB: not on the flood risk listL21 4LD: not on the flood risk listL21 4LE: not on the flood risk listL21 4LF: not on the flood risk listL21 4LG: not on the flood risk listL21 4LJ: not on the flood risk listL21 4LL: not on the flood risk listL21 4LN: not on the flood risk listL21 4LP: not on the flood risk listL21 4LR: not on the flood risk listL21 4LT: not on the flood risk listL21 4LU: not on the flood risk listL21 4LW: not on the flood risk listL21 4LX: not on the flood risk listL21 4LY: not on the flood risk listL21 4LZ: not on the flood risk listL21 4NA: not on the flood risk listL21 4NB: not on the flood risk listL21 4ND: not on the flood risk listL21 4NH: not on the flood risk listL21 4NN: not on the flood risk listL21 4NP: not on the flood risk listL21 4NR: not on the flood risk listL21 4NS: not on the flood risk listL21 4NT: not on the flood risk listL21 4NU: not on the flood risk listL21 4NW: not on the flood risk listL21 4PA: not on the flood risk listL21 4PD: not on the flood risk listL21 4PF: not on the flood risk listL21 4PG: not on the flood risk listL21 4PJ: not on the flood risk listL21 4PL: not on the flood risk listL21 4PN: not on the flood risk listL21 4PQ: not on the flood risk listL21 4PW: not on the flood risk listL21 4PZ: not on the flood risk list Bootle West Map of every postcode in the L21 4 sector, by flood risk Of the 39 postcodes in the L21 4 sector that ONS places, 39 are not on the Environment Agency's at-risk list. Places named: Bootle West. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Bootle West
  • 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: 39

Of the 39 postcodes in the L21 4 sector that ONS places, 39 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. 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 L21 4?

Homes in L21 4 sold for a typical £131,250 in the 12 months to August 2026, across 8 sales, up 35.7% on the 12 months before, HM Land Registry's figures show.

£131,250 typical price, the 12 months to August 2026
£96,750 12 months to August 2025
▲ up 35.7% on the 12 months before
  • Terraced £131,250 8 sales

Standard sales of homes at market value at the postcodes that start L21 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 L21 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.

L21 4ABL21 4LAL21 4LBL21 4LDL21 4LEL21 4LFL21 4LGL21 4LJL21 4LLL21 4LNL21 4LPL21 4LRL21 4LTL21 4LUL21 4LWL21 4LXL21 4LYL21 4LZL21 4NAL21 4NBL21 4NDL21 4NHL21 4NNL21 4NPL21 4NRL21 4NSL21 4NTL21 4NUL21 4NWL21 4PAL21 4PDL21 4PFL21 4PGL21 4PJL21 4PLL21 4PNL21 4PQL21 4PWL21 4PZ

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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