WD17 1 postcode sector in the WD17 district

WD17 1 is a sector of the WD17 district: every postcode that starts WD17 1. It has 106 postcodes in use, 22 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 WD17 1 sector, and which are new since 2020

Map of every postcode in the WD17 1 sector, by new since 2020 Of the 106 postcodes in the WD17 1 sector that ONS places, 14 are new since 2020 and 92 were in use before 2020. One group of new postcodes is outlined: 5 new postcodes since 2020. Places named: Watford. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A4178 WD17 1AA: before 2020WD17 1AD: before 2020WD17 1AH: before 2020WD17 1AP: before 2020WD17 1AR: before 2020WD17 1AU: before 2020WD17 1AW: before 2020WD17 1AY: before 2020WD17 1AZ: before 2020WD17 1BA: before 2020WD17 1BH: before 2020WD17 1BJ: before 2020WD17 1BN: before 2020WD17 1BP: before 2020WD17 1BZ: before 2020WD17 1DA: before 2020WD17 1DD: before 2020WD17 1DG: before 2020WD17 1DH: before 2020WD17 1DS: before 2020WD17 1DY: before 2020WD17 1EA: before 2020WD17 1EE: before 2020WD17 1EG: before 2020WD17 1ES: before 2020WD17 1ET: before 2020WD17 1HE: before 2020WD17 1HP: before 2020WD17 1JJ: before 2020WD17 1JR: before 2020WD17 1JU: before 2020WD17 1JW: before 2020WD17 1JY: before 2020WD17 1JZ: before 2020WD17 1LA: before 2020WD17 1LB: before 2020WD17 1LJ: before 2020WD17 1LN: before 2020WD17 1LQ: before 2020WD17 1LS: before 2020WD17 1LU: before 2020WD17 1NA: before 2020WD17 1NB: before 2020WD17 1NJ: before 2020WD17 1NN: before 2020WD17 1NP: before 2020WD17 1PA: before 2020WD17 1PB: before 2020WD17 1PD: before 2020WD17 1PE: before 2020WD17 1PG: before 2020WD17 1PT: before 2020WD17 1PU: before 2020WD17 1PW: before 2020WD17 1PY: before 2020WD17 1PZ: before 2020WD17 1QA: before 2020WD17 1QB: before 2020WD17 1QD: before 2020WD17 1QE: before 2020WD17 1QF: before 2020WD17 1QG: before 2020WD17 1QL: before 2020WD17 1QN: before 2020WD17 1QQ: before 2020WD17 1QR: before 2020WD17 1QS: before 2020WD17 1QT: before 2020WD17 1QU: before 2020WD17 1QW: before 2020WD17 1QX: before 2020WD17 1RA: before 2020WD17 1RB: before 2020WD17 1RD: before 2020WD17 1RL: before 2020WD17 1RN: before 2020WD17 1RP: before 2020WD17 1RT: before 2020WD17 1RY: before 2020WD17 1SJ: before 2020WD17 1SZ: before 2020WD17 1TB: before 2020WD17 1UE: before 2020WD17 1BS: new since 2020WD17 1BU: new since 2020WD17 1BY: new since 2020WD17 1DB: new since 2020WD17 1DF: new since 2020WD17 1DJ: new since 2020WD17 1DT: new since 2020WD17 1DU: new since 2020WD17 1JA: new since 2020WD17 1ND: new since 2020WD17 1TX: new since 2020 Watford 5 new postcodes since 2020, outlined: this goes to WD17 1DQ, the newest of them5 new postcodes since 2020 Map of every postcode in the WD17 1 sector, by new since 2020 Of the 106 postcodes in the WD17 1 sector that ONS places, 14 are new since 2020 and 92 were in use before 2020. One group of new postcodes is outlined: 5 new postcodes since 2020. Places named: Watford. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Watford 5 new postcodes since 2020, outlined: this goes to WD17 1DQ, the newest of them5 new postcodes since 2020
  • New since 2020: 14
  • In use before 2020: 92
  • Outline: where 5 or more new postcodes since 2020 lie together

Of the 106 postcodes in the WD17 1 sector that ONS places, 14 are new since 2020 and 92 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. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; roads, rivers and built-up areas: Ordnance Survey open maps. 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.

Where the new postcodes lie together

What do homes sell for in WD17 1?

Homes in WD17 1 sold for a typical £283,600 in the 12 months to September 2026, across 22 sales, HM Land Registry's figures show. The 12 months before gave £390,000 from 103 sales. With fewer than 30 sales a year, a change can come from which homes happened to sell, so we do not give one.

£283,600 typical price, the 12 months to September 2026
£390,000 12 months to September 2025
  • Semi-detached 2 sales, too few to price
  • Terraced £380,000 5 sales
  • Flat or maisonette £265,000 15 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 WD17 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 October 2026.

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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Where the facts on this page come from

Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.

Licence: Open Government Licence v3.0.

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