WD3 7 postcode sector in the WD3 district

WD3 7 is a sector of the WD3 district: every postcode that starts WD3 7. It has 95 postcodes in use, one of them a large-user postcode. 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 WD3 7 sector, and which are new since 2020

Map of every postcode in the WD3 7 sector, by new since 2020 Of the 95 postcodes in the WD3 7 sector that ONS places, 95 were in use before 2020. Places named: Rickmansworth Town, Penn & Mill End. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A412A404 WD3 7AL: before 2020WD3 7AN: before 2020WD3 7AP: before 2020WD3 7AR: before 2020WD3 7AT: before 2020WD3 7AU: before 2020WD3 7AW: before 2020WD3 7AX: before 2020WD3 7AY: before 2020WD3 7AZ: before 2020WD3 7BA: before 2020WD3 7BB: before 2020WD3 7BD: before 2020WD3 7BE: before 2020WD3 7BF: before 2020WD3 7BG: before 2020WD3 7BQ: before 2020WD3 7BT: before 2020WD3 7BU: before 2020WD3 7BX: before 2020WD3 7BY: before 2020WD3 7BZ: before 2020WD3 7DA: before 2020WD3 7DB: before 2020WD3 7DD: before 2020WD3 7DE: before 2020WD3 7DF: before 2020WD3 7DG: before 2020WD3 7DH: before 2020WD3 7DJ: before 2020WD3 7DL: before 2020WD3 7DN: before 2020WD3 7DQ: before 2020WD3 7DW: before 2020WD3 7DY: before 2020WD3 7DZ: before 2020WD3 7EE: before 2020WD3 7EG: before 2020WD3 7EH: before 2020WD3 7EJ: before 2020WD3 7EL: before 2020WD3 7EN: before 2020WD3 7EP: before 2020WD3 7EQ: before 2020WD3 7ER: before 2020WD3 7ES: before 2020WD3 7ET: before 2020WD3 7EU: before 2020WD3 7EW: before 2020WD3 7EX: before 2020WD3 7EY: before 2020WD3 7EZ: before 2020WD3 7FN: before 2020WD3 7GF: before 2020WD3 7HA: before 2020WD3 7HB: before 2020WD3 7HG: before 2020WD3 7HH: before 2020WD3 7HJ: before 2020WD3 7HL: before 2020WD3 7HN: before 2020WD3 7HP: before 2020WD3 7HQ: before 2020WD3 7HU: before 2020WD3 7HW: before 2020WD3 7NG: before 2020WD3 7NH: before 2020WD3 7NJ: before 2020WD3 7NL: before 2020WD3 7NN: before 2020WD3 7NP: before 2020WD3 7NQ: before 2020WD3 7NR: before 2020WD3 7NS: before 2020WD3 7NT: before 2020WD3 7NU: before 2020WD3 7NW: before 2020WD3 7NX: before 2020WD3 7NY: before 2020WD3 7NZ: before 2020WD3 7PA: before 2020WD3 7PB: before 2020WD3 7PD: before 2020WD3 7PE: before 2020WD3 7PF: before 2020WD3 7PG: before 2020WD3 7PH: before 2020WD3 7PJ: before 2020WD3 7PL: before 2020WD3 7PN: before 2020WD3 7PP: before 2020WD3 7PQ: before 2020WD3 7PR: before 2020WD3 7SX: before 2020WD3 7WX: before 2020 Rickmansworth TownPenn & Mill End Map of every postcode in the WD3 7 sector, by new since 2020 Of the 95 postcodes in the WD3 7 sector that ONS places, 95 were in use before 2020. Places named: Rickmansworth Town, Penn & Mill End. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Rickmansworth TownPenn & Mill End
  • New since 2020: 0
  • In use before 2020: 95

Of the 95 postcodes in the WD3 7 sector that ONS places, 95 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. 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; 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

What do homes sell for in WD3 7?

Homes in WD3 7 sold for a typical £935,000 in the 12 months to August 2026, across 31 sales, up 5.5% on the 12 months before, HM Land Registry's figures show.

£935,000 typical price, the 12 months to August 2026
£886,000 12 months to August 2025
▲ up 5.5% on the 12 months before
  • Detached £1,150,000 15 sales
  • Semi-detached £975,000 8 sales
  • Terraced 4 sales, too few to price
  • Flat or maisonette 4 sales, 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 WD3 7. 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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