HP18 1 postcode sector in the HP18 district

HP18 1 is a sector of the HP18 district: every postcode that starts HP18 1. It has 23 postcodes in use.

Not sure what a sector is? UK postcode format explained.

Every postcode in the HP18 1 sector, by flood risk

Map of every postcode in the HP18 1 sector, by flood risk Of the 23 postcodes in the HP18 1 sector that ONS places, 4 have a home or business at high risk, 1 are at medium risk at worst, 1 are at low risk at worst and 17 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: Berryfields, Buckingham Park & Watermead. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. HP18 1AA: not on the flood risk listHP18 1AB: not on the flood risk listHP18 1AD: not on the flood risk listHP18 1AE: not on the flood risk listHP18 1AF: not on the flood risk listHP18 1AG: not on the flood risk listHP18 1AH: not on the flood risk listHP18 1AL: not on the flood risk listHP18 1AN: not on the flood risk listHP18 1AQ: not on the flood risk listHP18 1AR: not on the flood risk listHP18 1AS: not on the flood risk listHP18 1AU: not on the flood risk listHP18 1AX: not on the flood risk listHP18 1AY: not on the flood risk listHP18 1BB: not on the flood risk listHP18 1BD: not on the flood risk listHP18 1AT: low flood risk at worstHP18 1AJ: medium flood risk at worstHP18 1AP: high flood riskHP18 1AW: high flood riskHP18 1AZ: high flood riskHP18 1BA: high flood risk Berryfields, Buckingham Park & Watermead 5 postcodes at high or medium risk, outlined: this goes to HP18 1AP, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in the HP18 1 sector, by flood risk Of the 23 postcodes in the HP18 1 sector that ONS places, 4 have a home or business at high risk, 1 are at medium risk at worst, 1 are at low risk at worst and 17 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: Berryfields, Buckingham Park & Watermead. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Berryfields, Buckingham Park & Watermead
  • A home or business at high risk: 4
  • At medium risk at worst: 1
  • At low risk at worst: 1
  • At very low risk only: 0
  • Not on the at-risk list: 17
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 23 postcodes in the HP18 1 sector that ONS places, 4 have a home or business at high risk, 1 are at medium risk at worst, 1 are at low risk at worst and 17 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 180 metres of each other. It is not a boundary, and 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

The postcodes at high risk

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

HP18 1AP9 at high riskHP18 1BA4 at high riskHP18 1AZ3 at high riskHP18 1AW1 at high risk

Where the postcodes at high or medium risk lie together

  • 5 postcodes at high or medium risk, outlined on the map. HP18 1AP, is the one with most homes and businesses at high risk.

What do homes sell for in HP18 1?

Homes in HP18 1 sold for a typical £352,000 in the 12 months to August 2026, across 16 sales, up 32.8% on the 12 months before, HM Land Registry's figures show.

£352,000 typical price, the 12 months to August 2026
£265,000 12 months to August 2025
▲ up 32.8% on the 12 months before
  • Detached 3 sales, too few to price
  • Semi-detached 3 sales, too few to price
  • Terraced 4 sales, too few to price
  • Flat or maisonette £234,000 6 sales

Standard sales of homes at market value at the postcodes that start HP18 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 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 HP18 1

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

HP18 1AAHP18 1ABHP18 1ADHP18 1AEHP18 1AFHP18 1AGHP18 1AHHP18 1AJHP18 1ALHP18 1ANHP18 1APHP18 1AQHP18 1ARHP18 1ASHP18 1ATHP18 1AUHP18 1AWHP18 1AXHP18 1AYHP18 1AZHP18 1BAHP18 1BBHP18 1BD

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

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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