WD4 postcode district: Abbots Langley and Kings Langley and around, Hertfordshire

WD4 is a postcode district in Hertfordshire, with 373 postcodes in use in 3 sectors. It has postcodes in Abbots Langley and Kings Langley, Chipperfield, Watford and 1 more place. It is split between 3 councils: Dacorum (210 postcodes), Three Rivers (149) and Watford (14).

Postcodes in use
373
Sectors
3
Councils
3 councils
Places
4 places

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in WD4, by flood risk

Map of every postcode in WD4, by flood risk Of the 373 postcodes in WD4 that ONS places, 6 have a home or business at high risk, 13 are at low risk at worst, 3 are at very low risk only and 351 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 5 postcodes at high or medium risk. Places named: Abbots Langley and Kings Langley, Watford, Rickmansworth, Chorleywood, Chipperfield. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A404A412M25A411 WD4 4AG: not on the flood risk listWD4 8AB: not on the flood risk listWD4 8AD: not on the flood risk listWD4 8AH: not on the flood risk listWD4 8AJ: not on the flood risk listWD4 8AL: not on the flood risk listWD4 8AN: not on the flood risk listWD4 8AP: not on the flood risk listWD4 8AR: not on the flood risk listWD4 8AS: not on the flood risk listWD4 8AT: not on the flood risk listWD4 8AU: not on the flood risk listWD4 8AW: not on the flood risk listWD4 8AY: not on the flood risk listWD4 8AZ: not on the flood risk listWD4 8BA: not on the flood risk listWD4 8BB: not on the flood risk listWD4 8BE: not on the flood risk listWD4 8BH: not on the flood risk listWD4 8BJ: not on the flood risk listWD4 8BL: not on the flood risk listWD4 8BN: not on the flood risk listWD4 8BP: not on the flood risk listWD4 8BR: not on the flood risk listWD4 8BS: not on the flood risk listWD4 8BT: not on the flood risk listWD4 8BU: not on the flood risk listWD4 8BX: not on the flood risk listWD4 8BZ: not on the flood risk listWD4 8DA: not on the flood risk listWD4 8DB: not on the flood risk listWD4 8DD: not on the flood risk listWD4 8DE: not on the flood risk listWD4 8DF: not on the flood risk listWD4 8DG: not on the flood risk listWD4 8DN: not on the flood risk listWD4 8DP: not on the flood risk listWD4 8DQ: not on the flood risk listWD4 8DR: not on the flood risk listWD4 8DS: not on the flood risk listWD4 8DT: not on the flood risk listWD4 8DU: not on the flood risk listWD4 8DY: not on the flood risk listWD4 8DZ: not on the flood risk listWD4 8EA: not on the flood risk listWD4 8EB: not on the flood risk listWD4 8ED: not on the flood risk listWD4 8EE: not on the flood risk listWD4 8EG: not on the flood risk listWD4 8EH: not on the flood risk listWD4 8EJ: not on the flood risk listWD4 8EL: not on the flood risk listWD4 8ES: not on the flood risk listWD4 8ET: not on the flood risk listWD4 8EU: not on the flood risk listWD4 8EW: not on the flood risk listWD4 8EX: not on the flood risk listWD4 8EY: not on the flood risk listWD4 8FG: not on the flood risk listWD4 8FQ: not on the flood risk listWD4 8FT: not on the flood risk listWD4 8FW: not on the flood risk listWD4 8FX: not on the flood risk listWD4 8FY: not on the flood risk listWD4 8GB: not on the flood risk listWD4 8GE: not on the flood risk listWD4 8GF: not on the flood risk listWD4 8GJ: not on the flood risk listWD4 8GU: not on the flood risk listWD4 8GW: not on the flood risk listWD4 8GY: not on the flood risk listWD4 8HA: not on the flood risk listWD4 8HB: not on the flood risk listWD4 8HE: not on the flood risk listWD4 8HG: not on the flood risk listWD4 8HJ: not on the flood risk listWD4 8HL: not on the flood risk listWD4 8HQ: not on the flood risk listWD4 8HX: not on the flood risk listWD4 8HZ: not on the flood risk listWD4 8JA: not on the flood risk listWD4 8JE: not on the flood risk listWD4 8JH: not on the flood risk listWD4 8JJ: not on the flood risk listWD4 8JL: not on the flood risk listWD4 8JN: not on the flood risk listWD4 8JP: not on the flood risk listWD4 8JR: not on the flood risk listWD4 8JS: not on the flood risk listWD4 8JU: not on the flood risk listWD4 8JW: not on the flood risk listWD4 8LB: not on the flood risk listWD4 8LD: not on the flood risk listWD4 8LE: not on the flood risk listWD4 8LF: not on the flood risk listWD4 8LG: not on the flood risk listWD4 8LH: not on the flood risk listWD4 8LL: not on the flood risk listWD4 8LP: not on the flood risk listWD4 8LQ: not on the flood risk listWD4 8LR: not on the flood risk listWD4 8LS: not on the flood risk listWD4 8LT: not on the flood risk listWD4 8LU: not on the flood risk listWD4 8LY: not on the flood risk listWD4 8LZ: not on the flood risk listWD4 8NA: not on the flood risk listWD4 8NB: not on the flood risk listWD4 8ND: not on the flood risk listWD4 8NE: not on the flood risk listWD4 8NF: not on the flood risk listWD4 8NG: not on the flood risk listWD4 8NH: not on the flood risk listWD4 8NJ: not on the flood risk listWD4 8NL: not on the flood risk listWD4 8NN: not on the flood risk listWD4 8NP: not on the flood risk listWD4 8NQ: not on the flood risk listWD4 8NR: not on the flood risk listWD4 8NS: not on the flood risk listWD4 8NU: not on the flood risk listWD4 8NW: not on the flood risk listWD4 8NX: not on the flood risk listWD4 8NY: not on the flood risk listWD4 8NZ: not on the flood risk listWD4 8PA: not on the flood risk listWD4 8PB: not on the flood risk listWD4 8PG: not on the flood risk listWD4 8PH: not on the flood risk listWD4 8PJ: not on the flood risk listWD4 8PL: not on the flood risk listWD4 8PN: not on the flood risk listWD4 8PP: not on the flood risk listWD4 8PQ: not on the flood risk listWD4 8PR: not on the flood risk listWD4 8PS: not on the flood risk listWD4 8PT: not on the flood risk listWD4 8PU: not on the flood risk listWD4 8PX: not on the flood risk listWD4 8PY: not on the flood risk listWD4 8PZ: not on the flood risk listWD4 8QB: not on the flood risk listWD4 8QG: not on the flood risk listWD4 8QH: not on the flood risk listWD4 8QJ: not on the flood risk listWD4 8QL: not on the flood risk listWD4 8QN: not on the flood risk listWD4 8QP: not on the flood risk listWD4 8QQ: not on the flood risk listWD4 8QR: not on the flood risk listWD4 8QT: not on the flood risk listWD4 8QU: not on the flood risk listWD4 8QW: not on the flood risk listWD4 8QX: not on the flood risk listWD4 8RD: not on the flood risk listWD4 8RJ: not on the flood risk listWD4 8RL: not on the flood risk listWD4 8RN: not on the flood risk listWD4 8RP: not on the flood risk listWD4 8RR: not on the flood risk listWD4 8RS: not on the flood risk listWD4 8RW: not on the flood risk listWD4 8SD: not on the flood risk listWD4 8SG: not on the flood risk listWD4 8SL: not on the flood risk listWD4 8SS: not on the flood risk listWD4 8SZ: not on the flood risk listWD4 8TD: not on the flood risk listWD4 8TP: not on the flood risk listWD4 8UD: not on the flood risk listWD4 9AA: not on the flood risk listWD4 9AD: not on the flood risk listWD4 9AE: not on the flood risk listWD4 9AH: not on the flood risk listWD4 9AJ: not on the flood risk listWD4 9AL: not on the flood risk listWD4 9AP: not on the flood risk listWD4 9AR: not on the flood risk listWD4 9AS: not on the flood risk listWD4 9AT: not on the flood risk listWD4 9AU: not on the flood risk listWD4 9AW: not on the flood risk listWD4 9AX: not on the flood risk listWD4 9AY: not on the flood risk listWD4 9AZ: not on the flood risk listWD4 9BA: not on the flood risk listWD4 9BB: not on the flood risk listWD4 9BF: not on the flood risk listWD4 9BH: not on the flood risk listWD4 9BJ: not on the flood risk listWD4 9BL: not on the flood risk listWD4 9BN: not on the flood risk listWD4 9BP: not on the flood risk listWD4 9BQ: not on the flood risk listWD4 9BR: not on the flood risk listWD4 9BS: not on the flood risk listWD4 9BT: not on the flood risk listWD4 9BU: not on the flood risk listWD4 9BW: not on the flood risk listWD4 9BX: not on the flood risk listWD4 9BY: not on the flood risk listWD4 9BZ: not on the flood risk listWD4 9DA: not on the flood risk listWD4 9DB: not on the flood risk listWD4 9DD: not on the flood risk listWD4 9DE: not on the flood risk listWD4 9DF: not on the flood risk listWD4 9DG: not on the flood risk listWD4 9DH: not on the flood risk listWD4 9DJ: not on the flood risk listWD4 9DL: not on the flood risk listWD4 9DN: not on the flood risk listWD4 9DP: not on the flood risk listWD4 9DQ: not on the flood risk listWD4 9DR: not on the flood risk listWD4 9DS: not on the flood risk listWD4 9DT: not on the flood risk listWD4 9DU: not on the flood risk listWD4 9DW: not on the flood risk listWD4 9DX: not on the flood risk listWD4 9DY: not on the flood risk listWD4 9DZ: not on the flood risk listWD4 9EA: not on the flood risk listWD4 9EB: not on the flood risk listWD4 9ED: not on the flood risk listWD4 9EE: not on the flood risk listWD4 9EF: not on the flood risk listWD4 9EH: not on the flood risk listWD4 9EN: not on the flood risk listWD4 9EQ: not on the flood risk listWD4 9ES: not on the flood risk listWD4 9ET: not on the flood risk listWD4 9EU: not on the flood risk listWD4 9EW: not on the flood risk listWD4 9EX: not on the flood risk listWD4 9EY: not on the flood risk listWD4 9EZ: not on the flood risk listWD4 9FA: not on the flood risk listWD4 9FB: not on the flood risk listWD4 9FD: not on the flood risk listWD4 9HA: not on the flood risk listWD4 9HB: not on the flood risk listWD4 9HE: not on the flood risk listWD4 9HF: not on the flood risk listWD4 9HG: not on the flood risk listWD4 9HH: not on the flood risk listWD4 9HJ: not on the flood risk listWD4 9HL: not on the flood risk listWD4 9HN: not on the flood risk listWD4 9HP: not on the flood risk listWD4 9HQ: not on the flood risk listWD4 9HR: not on the flood risk listWD4 9HS: not on the flood risk listWD4 9HT: not on the flood risk listWD4 9HW: not on the flood risk listWD4 9HX: not on the flood risk listWD4 9HY: not on the flood risk listWD4 9HZ: not on the flood risk listWD4 9JA: not on the flood risk listWD4 9JB: not on the flood risk listWD4 9JD: not on the flood risk listWD4 9JE: not on the flood risk listWD4 9JF: not on the flood risk listWD4 9JG: not on the flood risk listWD4 9JH: not on the flood risk listWD4 9JJ: not on the flood risk listWD4 9JL: not on the flood risk listWD4 9JN: not on the flood risk listWD4 9JP: not on the flood risk listWD4 9JQ: not on the flood risk listWD4 9JR: not on the flood risk listWD4 9JT: not on the flood risk listWD4 9JU: not on the flood risk listWD4 9JW: not on the flood risk listWD4 9LA: not on the flood risk listWD4 9LB: not on the flood risk listWD4 9LD: not on the flood risk listWD4 9LE: not on the flood risk listWD4 9LF: not on the flood risk listWD4 9LG: not on the flood risk listWD4 9LH: not on the flood risk listWD4 9LJ: not on the flood risk listWD4 9LL: not on the flood risk listWD4 9LN: not on the flood risk listWD4 9LP: not on the flood risk listWD4 9LQ: not on the flood risk listWD4 9LR: not on the flood risk listWD4 9LS: not on the flood risk listWD4 9LT: not on the flood risk listWD4 9LU: not on the flood risk listWD4 9LW: not on the flood risk listWD4 9LY: not on the flood risk listWD4 9NA: not on the flood risk listWD4 9NB: not on the flood risk listWD4 9ND: not on the flood risk listWD4 9NE: not on the flood risk listWD4 9NF: not on the flood risk listWD4 9NN: not on the flood risk listWD4 9NQ: not on the flood risk listWD4 9PA: not on the flood risk listWD4 9PS: not on the flood risk listWD4 9PT: not on the flood risk listWD4 9QA: not on the flood risk listWD4 8AG: very low flood risk onlyWD4 8HT: very low flood risk onlyWD4 8RT: very low flood risk onlyWD4 8ER: low flood risk at worstWD4 8RE: low flood risk at worstWD4 8FL: low flood risk at worstWD4 8FN: low flood risk at worstWD4 8FR: low flood risk at worstWD4 8HY: low flood risk at worstWD4 8FU: low flood risk at worstWD4 8HD: low flood risk at worstWD4 8HN: low flood risk at worstWD4 8HR: low flood risk at worstWD4 8LW: low flood risk at worstWD4 8ST: low flood risk at worstWD4 8JB: high flood riskWD4 8QS: high flood riskWD4 8QY: high flood riskWD4 8QZ: high flood riskWD4 8RH: high flood riskWD4 8RQ: high flood risk Abbots Langley and Kings LangleyWatfordRickmansworthChorleywoodChipperfield 5 postcodes at high or medium risk, outlined: this goes to WD4 8QY, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in WD4, by flood risk Of the 373 postcodes in WD4 that ONS places, 6 have a home or business at high risk, 13 are at low risk at worst, 3 are at very low risk only and 351 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 5 postcodes at high or medium risk. Places named: Rickmansworth, Chorleywood, Chipperfield. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A412A404M25 RickmansworthChorleywoodChipperfield
  • A home or business at high risk: 6
  • At medium risk at worst: 0
  • At low risk at worst: 13
  • At very low risk only: 3
  • Not on the at-risk list: 351
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 373 postcodes in WD4 that ONS places, 6 have a home or business at high risk, 13 are at low risk at worst, 3 are at very low risk only and 351 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. A dashed outline shows where 5 or more lie within 170 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.

The middle of its postcodes: latitude 51.7065, longitude -0.4569. Open this area on OpenStreetMap

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.

WD4 8QY4 at high riskWD4 8RH3 at high riskWD4 8JB1 at high riskWD4 8QS1 at high riskWD4 8QZ1 at high riskWD4 8RQ1 at high risk

Where the postcodes at high or medium risk lie together

  • 5 postcodes at high or medium risk, outlined on the map. WD4 8QY, is the one with most homes and businesses at high risk.

What broadband can you get in WD4?

Ofcom reports on 354 of the 373 postcodes in WD4. At 206 of them every home and business can get gigabit broadband, and at 2 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit206 of 354
Postcodes where every home can get superfast285 of 354
Postcodes where some cannot get decent broadband2 of 354

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is WD4 at risk of flooding?

22 of the 373 postcodes in WD4 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 11 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 22 of 373 postcodes High: 11Low: 104Very low: 41

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in WD4?

Homes in WD4 sold for a typical £600,000 in the 12 months to August 2026, across 109 sales, up 5.3% on the 12 months before, HM Land Registry's figures show.

£600,000 typical price, the 12 months to August 2026
£570,000 12 months to August 2025
▲ up 5.3% on the 12 months before
  • Detached £900,000 36 sales
  • Semi-detached £600,000 29 sales
  • Terraced £456,250 24 sales
  • Flat or maisonette £267,500 20 sales

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

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

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 WD4

Pick a sector, then a postcode. A sector is the district plus the next digit.

WD4 411 postcodesWD4 8221 postcodesWD4 9141 postcodes
UK postcode format explained

Places in WD4

Towns and villages with postcodes in WD4, and how many each has here.

Abbots Langley and Kings Langley postcodes,217Chipperfield postcodes,66Watford postcodes,15Hemel Hempstead postcodes,1

Who covers WD4

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • South West Hertfordshire286
  • Hemel Hempstead73
  • Watford14

Police force areas

  • Hertfordshire373

Next to WD4

WD3 postcode district WD5 postcode district All WD districts Abbots Langley and Kings Langley postcodes

"Next to" is by number: the districts before and after WD4 in the WD area.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.