L20 1 postcode sector in the L20 district

L20 1 is a sector of the L20 district: every postcode that starts L20 1. It has 31 postcodes in use, 3 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 L20 1 sector, by flood risk

Map of every postcode in the L20 1 sector, by flood risk Of the 31 postcodes in the L20 1 sector that ONS places, 5 have a home or business at high risk and 26 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 500 m. A567A5098A5038A5036 L20 1AB: not on the flood risk listL20 1AD: not on the flood risk listL20 1AF: not on the flood risk listL20 1AH: not on the flood risk listL20 1AL: not on the flood risk listL20 1AN: not on the flood risk listL20 1AS: not on the flood risk listL20 1AW: not on the flood risk listL20 1BE: not on the flood risk listL20 1BG: not on the flood risk listL20 1BN: not on the flood risk listL20 1BP: not on the flood risk listL20 1BQ: not on the flood risk listL20 1BX: not on the flood risk listL20 1DR: not on the flood risk listL20 1EA: not on the flood risk listL20 1EB: not on the flood risk listL20 1ED: not on the flood risk listL20 1EE: not on the flood risk listL20 1EF: not on the flood risk listL20 1EP: not on the flood risk listL20 1ES: not on the flood risk listL20 1HA: not on the flood risk listL20 1HB: not on the flood risk listL20 1BA: high flood riskL20 1BL: high flood riskL20 1BY: high flood riskL20 1DB: high flood riskL20 1DE: high flood risk Bootle West Map of every postcode in the L20 1 sector, by flood risk Of the 31 postcodes in the L20 1 sector that ONS places, 5 have a home or business at high risk and 26 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 500 m. Bootle West
  • A home or business at high risk: 5
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 26

Of the 31 postcodes in the L20 1 sector that ONS places, 5 have a home or business at high risk and 26 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.

L20 1BY24 at high riskL20 1BA6 at high riskL20 1DB2 at high riskL20 1DE2 at high riskL20 1BL1 at high risk

Postcodes in L20 1

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.

L20 1ABL20 1ADL20 1AFL20 1AHL20 1ALL20 1ANL20 1ASL20 1AWL20 1BAL20 1BEL20 1BGL20 1BLL20 1BNL20 1BPL20 1BQL20 1BSL20 1BXL20 1BYL20 1DBL20 1DEL20 1DRL20 1EAL20 1EBL20 1EDL20 1EEL20 1EFL20 1EPL20 1ESL20 1EZL20 1HAL20 1HB

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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