CA20 postcode district: Seascale and around, Cumberland

CA20 is a postcode district in England, with 196 postcodes in use in 1 sector. It has postcodes in Seascale. Its council is Cumberland.

Postcodes in use
196
Sectors
1
Council
Cumberland
Places
Seascale

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

Every postcode in CA20, by flood risk

Map of every postcode in CA20, by flood risk Of the 196 postcodes in CA20 that ONS places, 15 have a home or business at high risk, 4 are at medium risk at worst, 9 are at low risk at worst and 168 are not on the Environment Agency's at-risk list. Places named: Seascale. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. CA20 1AA: not on the flood risk listCA20 1AD: not on the flood risk listCA20 1AE: not on the flood risk listCA20 1AF: not on the flood risk listCA20 1AG: not on the flood risk listCA20 1AH: not on the flood risk listCA20 1AJ: not on the flood risk listCA20 1AN: not on the flood risk listCA20 1AS: not on the flood risk listCA20 1AT: not on the flood risk listCA20 1AU: not on the flood risk listCA20 1AZ: not on the flood risk listCA20 1BG: not on the flood risk listCA20 1BN: not on the flood risk listCA20 1BP: not on the flood risk listCA20 1BS: not on the flood risk listCA20 1BT: not on the flood risk listCA20 1BU: not on the flood risk listCA20 1BW: not on the flood risk listCA20 1BX: not on the flood risk listCA20 1BY: not on the flood risk listCA20 1BZ: not on the flood risk listCA20 1DF: not on the flood risk listCA20 1DQ: not on the flood risk listCA20 1DS: not on the flood risk listCA20 1DT: not on the flood risk listCA20 1DW: not on the flood risk listCA20 1DX: not on the flood risk listCA20 1DY: not on the flood risk listCA20 1EA: not on the flood risk listCA20 1EB: not on the flood risk listCA20 1ED: not on the flood risk listCA20 1EH: not on the flood risk listCA20 1EN: not on the flood risk listCA20 1EP: not on the flood risk listCA20 1EQ: not on the flood risk listCA20 1ER: not on the flood risk listCA20 1ES: not on the flood risk listCA20 1ET: not on the flood risk listCA20 1EU: not on the flood risk listCA20 1EW: not on the flood risk listCA20 1EY: not on the flood risk listCA20 1EZ: not on the flood risk listCA20 1FB: not on the flood risk listCA20 1FE: not on the flood risk listCA20 1FF: not on the flood risk listCA20 1HA: not on the flood risk listCA20 1HD: not on the flood risk listCA20 1HG: not on the flood risk listCA20 1HJ: not on the flood risk listCA20 1HP: not on the flood risk listCA20 1HR: not on the flood risk listCA20 1HT: not on the flood risk listCA20 1HU: not on the flood risk listCA20 1HW: not on the flood risk listCA20 1HX: not on the flood risk listCA20 1HY: not on the flood risk listCA20 1JA: not on the flood risk listCA20 1JD: not on the flood risk listCA20 1JG: not on the flood risk listCA20 1JH: not on the flood risk listCA20 1JJ: not on the flood risk listCA20 1JL: not on the flood risk listCA20 1JP: not on the flood risk listCA20 1JT: not on the flood risk listCA20 1LD: not on the flood risk listCA20 1LE: not on the flood risk listCA20 1LL: not on the flood risk listCA20 1LP: not on the flood risk listCA20 1LQ: not on the flood risk listCA20 1LT: not on the flood risk listCA20 1LX: not on the flood risk listCA20 1NA: not on the flood risk listCA20 1ND: not on the flood risk listCA20 1NF: not on the flood risk listCA20 1NG: not on the flood risk listCA20 1NH: not on the flood risk listCA20 1NJ: not on the flood risk listCA20 1NN: not on the flood risk listCA20 1NQ: not on the flood risk listCA20 1NR: not on the flood risk listCA20 1NX: not on the flood risk listCA20 1NY: not on the flood risk listCA20 1PL: not on the flood risk listCA20 1PP: not on the flood risk listCA20 1PR: not on the flood risk listCA20 1PS: not on the flood risk listCA20 1PT: not on the flood risk listCA20 1PX: not on the flood risk listCA20 1QH: not on the flood risk listCA20 1QL: not on the flood risk listCA20 1QT: not on the flood risk listCA20 1QW: not on the flood risk listCA20 1RB: not on the flood risk listCA20 1BB: low flood risk at worstCA20 1BD: low flood risk at worstCA20 1BL: low flood risk at worstCA20 1PG: low flood risk at worstCA20 1QS: low flood risk at worstCA20 1RG: low flood risk at worstCA20 1DE: medium flood risk at worstCA20 1DH: medium flood risk at worstCA20 1EE: medium flood risk at worstCA20 1BE: high flood riskCA20 1BH: high flood riskCA20 1BJ: high flood riskCA20 1BQ: high flood riskCA20 1DB: high flood riskCA20 1DN: high flood riskCA20 1DZ: high flood riskCA20 1EX: high flood riskCA20 1FA: high flood riskCA20 1JB: high flood riskCA20 1QB: high flood riskCA20 1NU: high flood riskCA20 1NZ: high flood riskCA20 1PB: high flood risk Seascale Map of every postcode in CA20, by flood risk Of the 196 postcodes in CA20 that ONS places, 15 have a home or business at high risk, 4 are at medium risk at worst, 9 are at low risk at worst and 168 are not on the Environment Agency's at-risk list. Places named: Seascale. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. Seascale
  • A home or business at high risk: 15
  • At medium risk at worst: 4
  • At low risk at worst: 9
  • At very low risk only: 0
  • Not on the at-risk list: 168

Of the 196 postcodes in CA20 that ONS places, 15 have a home or business at high risk, 4 are at medium risk at worst, 9 are at low risk at worst and 168 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.

The middle of its postcodes: latitude 54.4106, longitude -3.4617. 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

The postcodes at high risk

15 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

CA20 1BH32 at high riskCA20 1BQ19 at high riskCA20 1BJ6 at high riskCA20 1JB6 at high riskCA20 1DN4 at high riskCA20 1DZ3 at high riskCA20 1FA3 at high riskCA20 1EX2 at high riskCA20 1NZ2 at high riskCA20 1QD1 at high riskCA20 1BE1 at high riskCA20 1QB1 at high risk

What broadband can you get in CA20?

Ofcom reports on 190 of the 196 postcodes in CA20. At 112 of them every home and business can get gigabit broadband, and at 7 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit112 of 190
Postcodes where every home can get superfast155 of 190
Postcodes where some cannot get decent broadband7 of 190

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is CA20 at risk of flooding?

28 of the 196 postcodes in CA20 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 109 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 28 of 196 postcodes High: 83Medium: 26Low: 78Very low: 1

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

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

What do homes sell for in CA20?

Homes in CA20 sold for a typical £210,000 in the 12 months to August 2026, across 48 sales, down 2.3% on the 12 months before, HM Land Registry's figures show.

£210,000 typical price, the 12 months to August 2026
12 months to August 2025
£215,000
12 months to August 2026
£210,000

▼ down 2.3% on the 12 months before

Detached£290,000 17 sales
Semi-detached£195,000 22 sales
Terraced£136,000 8 sales
Flat or maisonette 1 sale, too few to price

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

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 CA20

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

CA20 1196 postcodes
UK postcode format explained

Places in CA20

Towns and villages with postcodes in CA20, and how many each has here.

Seascale postcodes,104

Who covers CA20

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

  • Whitehaven and Workington196

Police force areas

  • Cumbria196

Next to CA20

CA19 postcode district CA21 postcode district All CA districts Seascale postcodes

"Next to" is by number: the districts before and after CA20 in the CA area.

Check a postcode

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