CA20 1 postcode sector in the CA20 district

CA20 1 is a sector of the CA20 district: every postcode that starts CA20 1. It has 196 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 CA20 1 sector, and which are new since 2020

Map of every postcode in the CA20 1 sector, by new since 2020 Of the 196 postcodes in the CA20 1 sector that ONS places, 3 are new since 2020 and 193 were in use before 2020. Places named: Seascale. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. CA20 1AA: before 2020CA20 1AD: before 2020CA20 1AE: before 2020CA20 1AF: before 2020CA20 1AG: before 2020CA20 1AH: before 2020CA20 1AJ: before 2020CA20 1AN: before 2020CA20 1AS: before 2020CA20 1AT: before 2020CA20 1AU: before 2020CA20 1AZ: before 2020CA20 1BD: before 2020CA20 1BE: before 2020CA20 1BG: before 2020CA20 1BH: before 2020CA20 1BJ: before 2020CA20 1BL: before 2020CA20 1BN: before 2020CA20 1BP: before 2020CA20 1BQ: before 2020CA20 1BS: before 2020CA20 1BT: before 2020CA20 1BU: before 2020CA20 1BW: before 2020CA20 1BX: before 2020CA20 1BY: before 2020CA20 1BZ: before 2020CA20 1DB: before 2020CA20 1DF: before 2020CA20 1DH: before 2020CA20 1DN: before 2020CA20 1DQ: before 2020CA20 1DS: before 2020CA20 1DT: before 2020CA20 1DW: before 2020CA20 1DX: before 2020CA20 1DY: before 2020CA20 1DZ: before 2020CA20 1EA: before 2020CA20 1EB: before 2020CA20 1ED: before 2020CA20 1EE: before 2020CA20 1EH: before 2020CA20 1EN: before 2020CA20 1EP: before 2020CA20 1EQ: before 2020CA20 1ER: before 2020CA20 1ES: before 2020CA20 1ET: before 2020CA20 1EU: before 2020CA20 1EW: before 2020CA20 1EX: before 2020CA20 1EY: before 2020CA20 1EZ: before 2020CA20 1FB: before 2020CA20 1HA: before 2020CA20 1HD: before 2020CA20 1HG: before 2020CA20 1HJ: before 2020CA20 1HP: before 2020CA20 1HR: before 2020CA20 1HT: before 2020CA20 1HU: before 2020CA20 1HW: before 2020CA20 1HX: before 2020CA20 1HY: before 2020CA20 1JA: before 2020CA20 1JB: before 2020CA20 1JD: before 2020CA20 1JG: before 2020CA20 1JH: before 2020CA20 1JJ: before 2020CA20 1JL: before 2020CA20 1JP: before 2020CA20 1JT: before 2020CA20 1LD: before 2020CA20 1LE: before 2020CA20 1LL: before 2020CA20 1LP: before 2020CA20 1LQ: before 2020CA20 1LT: before 2020CA20 1LX: before 2020CA20 1NA: before 2020CA20 1ND: before 2020CA20 1NF: before 2020CA20 1NG: before 2020CA20 1NH: before 2020CA20 1NJ: before 2020CA20 1NN: before 2020CA20 1NQ: before 2020CA20 1NR: before 2020CA20 1NX: before 2020CA20 1NY: before 2020CA20 1NZ: before 2020CA20 1PL: before 2020CA20 1PP: before 2020CA20 1PR: before 2020CA20 1PS: before 2020CA20 1PT: before 2020CA20 1PX: before 2020CA20 1QH: before 2020CA20 1QL: before 2020CA20 1QT: before 2020CA20 1QW: before 2020CA20 1RB: before 2020CA20 1RG: before 2020CA20 1BA: before 2020CA20 1NT: before 2020CA20 1PA: before 2020CA20 1DD: before 2020CA20 1NP: before 2020CA20 1PF: before 2020CA20 1QG: before 2020CA20 1FA: new since 2020CA20 1FE: new since 2020CA20 1FF: new since 2020 Seascale Map of every postcode in the CA20 1 sector, by new since 2020 Of the 196 postcodes in the CA20 1 sector that ONS places, 3 are new since 2020 and 193 were in use before 2020. Places named: Seascale. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 5 km. Seascale
  • New since 2020: 3
  • In use before 2020: 193

Of the 196 postcodes in the CA20 1 sector that ONS places, 3 are new since 2020 and 193 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; 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 3 newest postcodes

CA20 1FFJuly 2025CA20 1FAJune 2022CA20 1FEApril 2022

What do homes sell for in CA20 1?

Homes in CA20 1 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
£215,000 12 months to August 2025
▼ 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

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value at the postcodes that start CA20 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

Postcodes in CA20 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.

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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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