RM20 3 postcode sector in the RM20 district

RM20 3 is a sector of the RM20 district: every postcode that starts RM20 3. It has 88 postcodes in use, 7 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 RM20 3 sector, by flood risk

Map of every postcode in the RM20 3 sector, by flood risk Of the 88 postcodes in the RM20 3 sector that ONS places, 38 are at very low risk only and 50 are not on the Environment Agency's at-risk list. Places named: Chafford Hundred, West Thurrock and Purfleet-on-Thames. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A282A1090A126 RM20 3AW: not on the flood risk listRM20 3AX: not on the flood risk listRM20 3BB: not on the flood risk listRM20 3BD: not on the flood risk listRM20 3BF: not on the flood risk listRM20 3BH: not on the flood risk listRM20 3BN: not on the flood risk listRM20 3BQ: not on the flood risk listRM20 3BS: not on the flood risk listRM20 3BT: not on the flood risk listRM20 3BU: not on the flood risk listRM20 3BW: not on the flood risk listRM20 3BX: not on the flood risk listRM20 3BY: not on the flood risk listRM20 3DA: not on the flood risk listRM20 3DB: not on the flood risk listRM20 3DD: not on the flood risk listRM20 3DE: not on the flood risk listRM20 3DF: not on the flood risk listRM20 3DG: not on the flood risk listRM20 3DH: not on the flood risk listRM20 3DJ: not on the flood risk listRM20 3EH: not on the flood risk listRM20 3FB: not on the flood risk listRM20 3FZ: not on the flood risk listRM20 3HB: not on the flood risk listRM20 3HP: not on the flood risk listRM20 3HT: not on the flood risk listRM20 3JB: not on the flood risk listRM20 3JD: not on the flood risk listRM20 3JE: not on the flood risk listRM20 3JF: not on the flood risk listRM20 3JG: not on the flood risk listRM20 3JH: not on the flood risk listRM20 3JJ: not on the flood risk listRM20 3JL: not on the flood risk listRM20 3JP: not on the flood risk listRM20 3JR: not on the flood risk listRM20 3JS: not on the flood risk listRM20 3LD: not on the flood risk listRM20 3LJ: not on the flood risk listRM20 3LP: not on the flood risk listRM20 3LX: not on the flood risk listRM20 3WD: not on the flood risk listRM20 3WE: not on the flood risk listRM20 3WJ: not on the flood risk listRM20 3WY: not on the flood risk listRM20 3WZ: not on the flood risk listRM20 3XD: not on the flood risk listRM20 3ZP: not on the flood risk listRM20 3AA: very low flood risk onlyRM20 3AD: very low flood risk onlyRM20 3AE: very low flood risk onlyRM20 3AF: very low flood risk onlyRM20 3AG: very low flood risk onlyRM20 3AJ: very low flood risk onlyRM20 3AL: very low flood risk onlyRM20 3AN: very low flood risk onlyRM20 3AP: very low flood risk onlyRM20 3AQ: very low flood risk onlyRM20 3AR: very low flood risk onlyRM20 3AS: very low flood risk onlyRM20 3AT: very low flood risk onlyRM20 3AU: very low flood risk onlyRM20 3BA: very low flood risk onlyRM20 3BJ: very low flood risk onlyRM20 3BP: very low flood risk onlyRM20 3ED: very low flood risk onlyRM20 3EE: very low flood risk onlyRM20 3EF: very low flood risk onlyRM20 3EG: very low flood risk onlyRM20 3FH: very low flood risk onlyRM20 3FJ: very low flood risk onlyRM20 3FN: very low flood risk onlyRM20 3HA: very low flood risk onlyRM20 3HD: very low flood risk onlyRM20 3HL: very low flood risk onlyRM20 3HX: very low flood risk onlyRM20 3JA: very low flood risk onlyRM20 3JQ: very low flood risk onlyRM20 3JT: very low flood risk onlyRM20 3LG: very low flood risk onlyRM20 3LH: very low flood risk onlyRM20 3LL: very low flood risk onlyRM20 3LU: very low flood risk onlyRM20 3NL: very low flood risk onlyRM20 3NR: very low flood risk onlyRM20 3ZD: very low flood risk only Chafford Hundred, West Thurrock and Purfleet-on-Thames Map of every postcode in the RM20 3 sector, by flood risk Of the 88 postcodes in the RM20 3 sector that ONS places, 38 are at very low risk only and 50 are not on the Environment Agency's at-risk list. Places named: West Thurrock & South Stifford. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A1090 West Thurrock & South Stifford
  • 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: 38
  • Not on the at-risk list: 50

Of the 88 postcodes in the RM20 3 sector that ONS places, 38 are at very low risk only and 50 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. 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

What do homes sell for in RM20 3?

Homes in RM20 3 sold for a typical £295,000 in the 12 months to August 2026, across 39 sales, up 1.4% on the 12 months before, HM Land Registry's figures show.

£295,000 typical price, the 12 months to August 2026
£291,000 12 months to August 2025
▲ up 1.4% on the 12 months before
  • Semi-detached £405,000 8 sales
  • Terraced £307,500 12 sales
  • Flat or maisonette £236,000 19 sales

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 RM20 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

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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