WD18 6 postcode sector in the WD18 district

WD18 6 is a sector of the WD18 district: every postcode that starts WD18 6. It has 103 postcodes in use, 4 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 WD18 6 sector, by flood risk

Map of every postcode in the WD18 6 sector, by flood risk Of the 103 postcodes in the WD18 6 sector that ONS places, 1 have a home or business at high risk, 1 are at medium risk at worst and 101 are not on the Environment Agency's at-risk list. Places named: Holywell. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A4145 WD18 6AA: not on the flood risk listWD18 6AB: not on the flood risk listWD18 6AD: not on the flood risk listWD18 6AE: not on the flood risk listWD18 6AF: not on the flood risk listWD18 6AG: not on the flood risk listWD18 6AH: not on the flood risk listWD18 6BW: not on the flood risk listWD18 6FU: not on the flood risk listWD18 6GB: not on the flood risk listWD18 6GD: not on the flood risk listWD18 6GE: not on the flood risk listWD18 6GF: not on the flood risk listWD18 6GG: not on the flood risk listWD18 6GH: not on the flood risk listWD18 6GJ: not on the flood risk listWD18 6GL: not on the flood risk listWD18 6GN: not on the flood risk listWD18 6GQ: not on the flood risk listWD18 6GR: not on the flood risk listWD18 6GS: not on the flood risk listWD18 6GT: not on the flood risk listWD18 6GU: not on the flood risk listWD18 6GW: not on the flood risk listWD18 6GY: not on the flood risk listWD18 6JD: not on the flood risk listWD18 6JG: not on the flood risk listWD18 6JH: not on the flood risk listWD18 6JJ: not on the flood risk listWD18 6JL: not on the flood risk listWD18 6JN: not on the flood risk listWD18 6JP: not on the flood risk listWD18 6JQ: not on the flood risk listWD18 6JR: not on the flood risk listWD18 6JS: not on the flood risk listWD18 6JT: not on the flood risk listWD18 6JU: not on the flood risk listWD18 6JW: not on the flood risk listWD18 6JX: not on the flood risk listWD18 6JY: not on the flood risk listWD18 6JZ: not on the flood risk listWD18 6LA: not on the flood risk listWD18 6LB: not on the flood risk listWD18 6LD: not on the flood risk listWD18 6LE: not on the flood risk listWD18 6LF: not on the flood risk listWD18 6LG: not on the flood risk listWD18 6LJ: not on the flood risk listWD18 6LL: not on the flood risk listWD18 6NP: not on the flood risk listWD18 6NS: not on the flood risk listWD18 6NT: not on the flood risk listWD18 6NU: not on the flood risk listWD18 6NW: not on the flood risk listWD18 6NX: not on the flood risk listWD18 6NY: not on the flood risk listWD18 6NZ: not on the flood risk listWD18 6PA: not on the flood risk listWD18 6PB: not on the flood risk listWD18 6PD: not on the flood risk listWD18 6PE: not on the flood risk listWD18 6PF: not on the flood risk listWD18 6PG: not on the flood risk listWD18 6PH: not on the flood risk listWD18 6PJ: not on the flood risk listWD18 6PL: not on the flood risk listWD18 6PN: not on the flood risk listWD18 6PP: not on the flood risk listWD18 6PQ: not on the flood risk listWD18 6PR: not on the flood risk listWD18 6PS: not on the flood risk listWD18 6PT: not on the flood risk listWD18 6PU: not on the flood risk listWD18 6PW: not on the flood risk listWD18 6PX: not on the flood risk listWD18 6PY: not on the flood risk listWD18 6PZ: not on the flood risk listWD18 6QF: not on the flood risk listWD18 6QG: not on the flood risk listWD18 6QJ: not on the flood risk listWD18 6QS: not on the flood risk listWD18 6SD: not on the flood risk listWD18 6SF: not on the flood risk listWD18 6ST: not on the flood risk listWD18 6SU: not on the flood risk listWD18 6SX: not on the flood risk listWD18 6TA: not on the flood risk listWD18 6TQ: not on the flood risk listWD18 6UP: not on the flood risk listWD18 6UQ: not on the flood risk listWD18 6UR: not on the flood risk listWD18 6US: not on the flood risk listWD18 6UT: not on the flood risk listWD18 6UW: not on the flood risk listWD18 6UZ: not on the flood risk listWD18 6XE: not on the flood risk listWD18 6XL: not on the flood risk listWD18 6XR: not on the flood risk listWD18 6QE: medium flood risk at worstWD18 6QT: high flood risk Holywell Map of every postcode in the WD18 6 sector, by flood risk Of the 103 postcodes in the WD18 6 sector that ONS places, 1 have a home or business at high risk, 1 are at medium risk at worst and 101 are not on the Environment Agency's at-risk list. Places named: Holywell. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Holywell
  • A home or business at high risk: 1
  • At medium risk at worst: 1
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 101

Of the 103 postcodes in the WD18 6 sector that ONS places, 1 have a home or business at high risk, 1 are at medium risk at worst and 101 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.

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

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

What do homes sell for in WD18 6?

Homes in WD18 6 sold for a typical £252,500 in the 12 months to August 2026, across 20 sales, down 12.9% on the 12 months before, HM Land Registry's figures show.

£252,500 typical price, the 12 months to August 2026
£290,000 12 months to August 2025
▼ down 12.9% on the 12 months before
  • Semi-detached 2 sales, too few to price
  • Terraced 3 sales, too few to price
  • Flat or maisonette £225,000 15 sales

Standard sales of homes at market value at the postcodes that start WD18 6. 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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