L40 3 postcode sector in the L40 district

L40 3 is a sector of the L40 district: every postcode that starts L40 3. It has 36 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 L40 3 sector, by flood risk

Map of every postcode in the L40 3 sector, by flood risk Of the 36 postcodes in the L40 3 sector that ONS places, 1 have a home or business at high risk and 35 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Croston, Mawdesley & Euxton South, Rural North East. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. L40 3AA: not on the flood risk listL40 3AB: not on the flood risk listL40 3AD: not on the flood risk listL40 3AE: not on the flood risk listL40 3PP: not on the flood risk listL40 3SB: not on the flood risk listL40 3SD: not on the flood risk listL40 3SE: not on the flood risk listL40 3SF: not on the flood risk listL40 3SG: not on the flood risk listL40 3SH: not on the flood risk listL40 3SJ: not on the flood risk listL40 3SL: not on the flood risk listL40 3SN: not on the flood risk listL40 3SP: not on the flood risk listL40 3SQ: not on the flood risk listL40 3SR: not on the flood risk listL40 3SS: not on the flood risk listL40 3ST: not on the flood risk listL40 3SU: not on the flood risk listL40 3SX: not on the flood risk listL40 3SY: not on the flood risk listL40 3SZ: not on the flood risk listL40 3TA: not on the flood risk listL40 3TB: not on the flood risk listL40 3TD: not on the flood risk listL40 3TE: not on the flood risk listL40 3TF: not on the flood risk listL40 3TG: not on the flood risk listL40 3TH: not on the flood risk listL40 3TQ: not on the flood risk listL40 3TR: not on the flood risk listL40 3TW: not on the flood risk listL40 3SA: high flood risk Croston, Mawdesley & Euxton SouthRural North East Map of every postcode in the L40 3 sector, by flood risk Of the 36 postcodes in the L40 3 sector that ONS places, 1 have a home or business at high risk and 35 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Croston, Mawdesley & Euxton South, Rural North East. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Croston, Mawdesley & Euxton SouthRural North East
  • A home or business at high risk: 1
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 35

Of the 36 postcodes in the L40 3 sector that ONS places, 1 have a home or business at high risk and 35 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.

L40 3SA1 at high risk

Further out, not drawn

This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.

L40 3XD

What do homes sell for in L40 3?

Homes in L40 3 sold for a typical £475,000 in the 12 months to August 2026, across 15 sales, up 7.5% on the 12 months before, HM Land Registry's figures show.

£475,000 typical price, the 12 months to August 2026
£441,900 12 months to August 2025
▲ up 7.5% on the 12 months before
  • Detached £485,000 9 sales
  • Semi-detached 4 sales, too few to price
  • Terraced 2 sales, too few to price

Standard sales of homes at market value at the postcodes that start L40 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 L40 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.

L40 3AAL40 3ABL40 3ADL40 3AEL40 3PPL40 3SAL40 3SBL40 3SDL40 3SEL40 3SFL40 3SGL40 3SHL40 3SJL40 3SLL40 3SNL40 3SPL40 3SQL40 3SRL40 3SSL40 3STL40 3SUL40 3SWL40 3SXL40 3SYL40 3SZL40 3TAL40 3TBL40 3TDL40 3TEL40 3TFL40 3TGL40 3THL40 3TQL40 3TRL40 3TWL40 3XD

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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