CH31 postcode district: Heswall and around, Wirral

CH31 is a postcode district in England, with 7 postcodes in use in 1 sector. It has postcodes in Heswall. Its council is Wirral.

Postcodes in use
7
Sectors
1
Council
Wirral
Places
Heswall

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in CH31, by flood risk

Map of every postcode in CH31, by flood risk Of the 7 postcodes in CH31 that ONS places, 7 are not on the Environment Agency's at-risk list. Places named: Heswall. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A540 CH31 9ES: not on the flood risk list Heswall Map of every postcode in CH31, by flood risk Of the 7 postcodes in CH31 that ONS places, 7 are not on the Environment Agency's at-risk list. Places named: Heswall. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A540 Heswall
  • 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: 7

Of the 7 postcodes in CH31 that ONS places, 7 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.

The middle of its postcodes: latitude 53.3297, longitude -3.0988. Open this area on OpenStreetMap

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

Is CH31 at risk of flooding?

None of the 7 postcodes in CH31 is on the Environment Agency's list of postcodes with a home or business in an area at risk of flooding from rivers or the sea.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

Postcodes in CH31

Pick a sector, then a postcode. A sector is the district plus the next digit.

CH31 97 postcodes
UK postcode format explained

Places in CH31

Towns and villages with postcodes in CH31, and how many each has here.

Heswall postcodes,7

Who covers CH31

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Wirral West7

Police force areas

  • Merseyside7

Next to CH31

CH30 postcode district CH32 postcode district All CH districts Heswall postcodes

"Next to" is by number: the districts before and after CH31 in the CH area.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.