CH41 1 postcode sector in the CH41 district

CH41 1 is a sector of the CH41 district: every postcode that starts CH41 1. It has 75 postcodes in use.

Not sure what a sector is? UK postcode format explained.

Every postcode in the CH41 1 sector, by flood risk

Map of every postcode in the CH41 1 sector, by flood risk Of the 75 postcodes in the CH41 1 sector that ONS places, 6 have a home or business at high risk, 1 are at medium risk at worst, 4 are at low risk at worst, 2 are at very low risk only and 62 are not on the Environment Agency's at-risk list. Places named: Birkenhead and Tranmere, Seacombe. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A5030A59 CH41 1AA: not on the flood risk listCH41 1AD: not on the flood risk listCH41 1AE: not on the flood risk listCH41 1AH: not on the flood risk listCH41 1AL: not on the flood risk listCH41 1AN: not on the flood risk listCH41 1AP: not on the flood risk listCH41 1AQ: not on the flood risk listCH41 1AR: not on the flood risk listCH41 1AS: not on the flood risk listCH41 1AT: not on the flood risk listCH41 1AU: not on the flood risk listCH41 1AY: not on the flood risk listCH41 1BD: not on the flood risk listCH41 1BF: not on the flood risk listCH41 1BG: not on the flood risk listCH41 1BH: not on the flood risk listCH41 1BL: not on the flood risk listCH41 1BN: not on the flood risk listCH41 1BP: not on the flood risk listCH41 1BQ: not on the flood risk listCH41 1BR: not on the flood risk listCH41 1BS: not on the flood risk listCH41 1BT: not on the flood risk listCH41 1BU: not on the flood risk listCH41 1BW: not on the flood risk listCH41 1BX: not on the flood risk listCH41 1DB: not on the flood risk listCH41 1DF: not on the flood risk listCH41 1DL: not on the flood risk listCH41 1DN: not on the flood risk listCH41 1DP: not on the flood risk listCH41 1DQ: not on the flood risk listCH41 1DR: not on the flood risk listCH41 1DS: not on the flood risk listCH41 1DT: not on the flood risk listCH41 1DU: not on the flood risk listCH41 1DY: not on the flood risk listCH41 1ET: not on the flood risk listCH41 1EU: not on the flood risk listCH41 1EW: not on the flood risk listCH41 1EY: not on the flood risk listCH41 1FD: not on the flood risk listCH41 1FF: not on the flood risk listCH41 1FH: not on the flood risk listCH41 1FL: not on the flood risk listCH41 1HB: not on the flood risk listCH41 1HE: not on the flood risk listCH41 1HN: not on the flood risk listCH41 1HW: not on the flood risk listCH41 1JH: not on the flood risk listCH41 1JJ: not on the flood risk listCH41 1JW: not on the flood risk listCH41 1LB: not on the flood risk listCH41 1LD: not on the flood risk listCH41 1LG: not on the flood risk listCH41 1LH: not on the flood risk listCH41 1LU: not on the flood risk listCH41 1LX: not on the flood risk listCH41 1LY: not on the flood risk listCH41 1ND: not on the flood risk listCH41 1FN: very low flood risk onlyCH41 1LF: very low flood risk onlyCH41 1AG: low flood risk at worstCH41 1BY: low flood risk at worstCH41 1FB: low flood risk at worstCH41 1LJ: low flood risk at worstCH41 1FG: medium flood risk at worstCH41 1AW: high flood riskCH41 1EB: high flood riskCH41 1EL: high flood riskCH41 1EP: high flood riskCH41 1FE: high flood riskCH41 1LT: high flood risk Birkenhead and TranmereSeacombe Map of every postcode in the CH41 1 sector, by flood risk Of the 75 postcodes in the CH41 1 sector that ONS places, 6 have a home or business at high risk, 1 are at medium risk at worst, 4 are at low risk at worst, 2 are at very low risk only and 62 are not on the Environment Agency's at-risk list. Places named: Birkenhead and Tranmere, Seacombe. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Birkenhead and TranmereSeacombe
  • A home or business at high risk: 6
  • At medium risk at worst: 1
  • At low risk at worst: 4
  • At very low risk only: 2
  • Not on the at-risk list: 62

Of the 75 postcodes in the CH41 1 sector that ONS places, 6 have a home or business at high risk, 1 are at medium risk at worst, 4 are at low risk at worst, 2 are at very low risk only and 62 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.

What do homes sell for in CH41 1?

HM Land Registry records 4 sales of homes in CH41 1 in the 12 months to August 2026: too few to give a typical price.

  • Flat or maisonette 4 sales, too few to price

Standard sales of homes at market value at the postcodes that start CH41 1. 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

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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