HP8 postcode district: Chalfont St Giles and around

HP8 is a postcode district in England, with 220 postcodes in use in 1 sector. It has postcodes in Chalfont St Giles, Little Chalfont and Amersham. It is split between 2 councils: Buckinghamshire (219 postcodes) and Three Rivers (1). 1 of its 220 postcodes is in Hertfordshire. ONS lists no county for the other 219.

Postcodes in use
220
Sectors
1
Councils
2 councils
Places
3 places

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

Every postcode in HP8, by flood risk

Map of every postcode in HP8, by flood risk Of the 220 postcodes in HP8 that ONS places, 6 have a home or business at high risk and 214 are not on the Environment Agency's at-risk list. Places named: Chalfont St Giles, Amersham, Little Chalfont, Seer Green. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A404A355 HP8 4AA: not on the flood risk listHP8 4AB: not on the flood risk listHP8 4AE: not on the flood risk listHP8 4AF: not on the flood risk listHP8 4AG: not on the flood risk listHP8 4AH: not on the flood risk listHP8 4AJ: not on the flood risk listHP8 4AL: not on the flood risk listHP8 4AN: not on the flood risk listHP8 4AP: not on the flood risk listHP8 4AQ: not on the flood risk listHP8 4AR: not on the flood risk listHP8 4AS: not on the flood risk listHP8 4AW: not on the flood risk listHP8 4AX: not on the flood risk listHP8 4BA: not on the flood risk listHP8 4BB: not on the flood risk listHP8 4BD: not on the flood risk listHP8 4BE: not on the flood risk listHP8 4BG: not on the flood risk listHP8 4BH: not on the flood risk listHP8 4BJ: not on the flood risk listHP8 4BL: not on the flood risk listHP8 4BN: not on the flood risk listHP8 4BP: not on the flood risk listHP8 4BQ: not on the flood risk listHP8 4BS: not on the flood risk listHP8 4BT: not on the flood risk listHP8 4BW: not on the flood risk listHP8 4BX: not on the flood risk listHP8 4BY: not on the flood risk listHP8 4DA: not on the flood risk listHP8 4DB: not on the flood risk listHP8 4DD: not on the flood risk listHP8 4DE: not on the flood risk listHP8 4DF: not on the flood risk listHP8 4DG: not on the flood risk listHP8 4DH: not on the flood risk listHP8 4DJ: not on the flood risk listHP8 4DL: not on the flood risk listHP8 4DN: not on the flood risk listHP8 4DP: not on the flood risk listHP8 4DQ: not on the flood risk listHP8 4DR: not on the flood risk listHP8 4DS: not on the flood risk listHP8 4DT: not on the flood risk listHP8 4DU: not on the flood risk listHP8 4DW: not on the flood risk listHP8 4DX: not on the flood risk listHP8 4DY: not on the flood risk listHP8 4DZ: not on the flood risk listHP8 4EA: not on the flood risk listHP8 4EB: not on the flood risk listHP8 4ED: not on the flood risk listHP8 4EE: not on the flood risk listHP8 4EF: not on the flood risk listHP8 4EG: not on the flood risk listHP8 4EH: not on the flood risk listHP8 4EJ: not on the flood risk listHP8 4EL: not on the flood risk listHP8 4EN: not on the flood risk listHP8 4EP: not on the flood risk listHP8 4EQ: not on the flood risk listHP8 4ER: not on the flood risk listHP8 4ES: not on the flood risk listHP8 4ET: not on the flood risk listHP8 4EU: not on the flood risk listHP8 4EW: not on the flood risk listHP8 4EX: not on the flood risk listHP8 4EY: not on the flood risk listHP8 4FA: not on the flood risk listHP8 4FB: not on the flood risk listHP8 4FF: not on the flood risk listHP8 4FG: not on the flood risk listHP8 4FJ: not on the flood risk listHP8 4FL: not on the flood risk listHP8 4FN: not on the flood risk listHP8 4FP: not on the flood risk listHP8 4HA: not on the flood risk listHP8 4HG: not on the flood risk listHP8 4HH: not on the flood risk listHP8 4HJ: not on the flood risk listHP8 4HL: not on the flood risk listHP8 4HN: not on the flood risk listHP8 4HP: not on the flood risk listHP8 4HQ: not on the flood risk listHP8 4HR: not on the flood risk listHP8 4HS: not on the flood risk listHP8 4HT: not on the flood risk listHP8 4HU: not on the flood risk listHP8 4HW: not on the flood risk listHP8 4HX: not on the flood risk listHP8 4HY: not on the flood risk listHP8 4HZ: not on the flood risk listHP8 4JA: not on the flood risk listHP8 4JB: not on the flood risk listHP8 4JD: not on the flood risk listHP8 4JH: not on the flood risk listHP8 4JJ: not on the flood risk listHP8 4JL: not on the flood risk listHP8 4JN: not on the flood risk listHP8 4JR: not on the flood risk listHP8 4JS: not on the flood risk listHP8 4JT: not on the flood risk listHP8 4JW: not on the flood risk listHP8 4JY: not on the flood risk listHP8 4JZ: not on the flood risk listHP8 4LA: not on the flood risk listHP8 4LB: not on the flood risk listHP8 4LD: not on the flood risk listHP8 4LE: not on the flood risk listHP8 4LF: not on the flood risk listHP8 4LG: not on the flood risk listHP8 4LH: not on the flood risk listHP8 4LJ: not on the flood risk listHP8 4LL: not on the flood risk listHP8 4LN: not on the flood risk listHP8 4LP: not on the flood risk listHP8 4LQ: not on the flood risk listHP8 4LW: not on the flood risk listHP8 4NB: not on the flood risk listHP8 4ND: not on the flood risk listHP8 4NE: not on the flood risk listHP8 4NF: not on the flood risk listHP8 4NG: not on the flood risk listHP8 4NH: not on the flood risk listHP8 4NJ: not on the flood risk listHP8 4NL: not on the flood risk listHP8 4NN: not on the flood risk listHP8 4NQ: not on the flood risk listHP8 4NS: not on the flood risk listHP8 4NT: not on the flood risk listHP8 4NW: not on the flood risk listHP8 4NX: not on the flood risk listHP8 4NY: not on the flood risk listHP8 4NZ: not on the flood risk listHP8 4PB: not on the flood risk listHP8 4PD: not on the flood risk listHP8 4PE: not on the flood risk listHP8 4PF: not on the flood risk listHP8 4PG: not on the flood risk listHP8 4PH: not on the flood risk listHP8 4PP: not on the flood risk listHP8 4PR: not on the flood risk listHP8 4PS: not on the flood risk listHP8 4PT: not on the flood risk listHP8 4PU: not on the flood risk listHP8 4PW: not on the flood risk listHP8 4PX: not on the flood risk listHP8 4PZ: not on the flood risk listHP8 4QD: not on the flood risk listHP8 4QG: not on the flood risk listHP8 4QH: not on the flood risk listHP8 4QJ: not on the flood risk listHP8 4QN: not on the flood risk listHP8 4QR: not on the flood risk listHP8 4QT: not on the flood risk listHP8 4QU: not on the flood risk listHP8 4QX: not on the flood risk listHP8 4QY: not on the flood risk listHP8 4QZ: not on the flood risk listHP8 4RA: not on the flood risk listHP8 4RB: not on the flood risk listHP8 4RD: not on the flood risk listHP8 4RE: not on the flood risk listHP8 4RF: not on the flood risk listHP8 4RG: not on the flood risk listHP8 4RP: not on the flood risk listHP8 4RQ: not on the flood risk listHP8 4RS: not on the flood risk listHP8 4RU: not on the flood risk listHP8 4RX: not on the flood risk listHP8 4RY: not on the flood risk listHP8 4RZ: not on the flood risk listHP8 4SA: not on the flood risk listHP8 4SB: not on the flood risk listHP8 4SD: not on the flood risk listHP8 4SF: not on the flood risk listHP8 4SG: not on the flood risk listHP8 4SH: not on the flood risk listHP8 4SJ: not on the flood risk listHP8 4SL: not on the flood risk listHP8 4SN: not on the flood risk listHP8 4SP: not on the flood risk listHP8 4SQ: not on the flood risk listHP8 4SR: not on the flood risk listHP8 4SS: not on the flood risk listHP8 4SU: not on the flood risk listHP8 4TA: not on the flood risk listHP8 4TG: not on the flood risk listHP8 4TH: not on the flood risk listHP8 4TJ: not on the flood risk listHP8 4TL: not on the flood risk listHP8 4TN: not on the flood risk listHP8 4TQ: not on the flood risk listHP8 4TU: not on the flood risk listHP8 4TX: not on the flood risk listHP8 4TY: not on the flood risk listHP8 4TZ: not on the flood risk listHP8 4UA: not on the flood risk listHP8 4UB: not on the flood risk listHP8 4UD: not on the flood risk listHP8 4UJ: not on the flood risk listHP8 4UT: not on the flood risk listHP8 4XH: not on the flood risk listHP8 4NP: high flood riskHP8 4NR: high flood riskHP8 4QA: high flood riskHP8 4QF: high flood riskHP8 4RT: high flood risk Chalfont St GilesAmershamLittle ChalfontSeer Green Map of every postcode in HP8, by flood risk Of the 220 postcodes in HP8 that ONS places, 6 have a home or business at high risk and 214 are not on the Environment Agency's at-risk list. Places named: Chalfont St Giles, Amersham, Little Chalfont, Seer Green. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Chalfont St GilesAmershamLittle ChalfontSeer Green
  • A home or business at high risk: 6
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 214

Of the 220 postcodes in HP8 that ONS places, 6 have a home or business at high risk and 214 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.

The middle of its postcodes: latitude 51.6381, longitude -0.5696. 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.

HP8 4QA9 at high riskHP8 4QF4 at high riskHP8 4NP2 at high riskHP8 4NR2 at high riskHP8 4RT2 at high riskHP8 4QB1 at high risk

What broadband can you get in HP8?

Ofcom reports on 217 of the 220 postcodes in HP8. At 79 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit79 of 217
Postcodes where every home can get superfast188 of 217

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 HP8 at risk of flooding?

6 of the 220 postcodes in HP8 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 20 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 6 of 220 postcodes High: 20Low: 13

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 HP8?

Homes in HP8 sold for a typical £730,000 in the 12 months to August 2026, across 71 sales, down 3.9% on the 12 months before, HM Land Registry's figures show.

£730,000 typical price, the 12 months to August 2026
12 months to August 2025
£760,000
12 months to August 2026
£730,000

▼ down 3.9% on the 12 months before

Detached£1,000,000 42 sales
Semi-detached£610,000 15 sales
Terraced£500,000 10 sales
Flat or maisonette 4 sales, too few to price

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 HP8

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

HP8 4220 postcodes
UK postcode format explained

Places in HP8

Towns and villages with postcodes in HP8, and how many each has here.

Chalfont St Giles postcodes,141Little Chalfont postcodes,41Amersham postcodes,1

Who covers HP8

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

  • Chesham and Amersham219
  • South West Hertfordshire1

Police force areas

  • Thames Valley219
  • Hertfordshire1

Next to HP8

HP7 postcode district HP9 postcode district All HP districts Chalfont St Giles postcodes

"Next to" is by number: the districts before and after HP8 in the HP area.

Check a postcode

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