HP18 9 postcode sector in the HP18 district

HP18 9 is a sector of the HP18 district: every postcode that starts HP18 9. It has 292 postcodes in use.

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

Every postcode in the HP18 9 sector, by flood risk

Map of every postcode in the HP18 9 sector, by flood risk Of the 292 postcodes in the HP18 9 sector that ONS places, 10 have a home or business at high risk, 4 are at medium risk at worst, 8 are at low risk at worst and 270 are not on the Environment Agency's at-risk list. Places named: Long Crendon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. M40A418A4129 HP18 9AA: not on the flood risk listHP18 9AE: not on the flood risk listHP18 9AF: not on the flood risk listHP18 9AG: not on the flood risk listHP18 9AH: not on the flood risk listHP18 9AJ: not on the flood risk listHP18 9AL: not on the flood risk listHP18 9AN: not on the flood risk listHP18 9AP: not on the flood risk listHP18 9AQ: not on the flood risk listHP18 9AR: not on the flood risk listHP18 9AS: not on the flood risk listHP18 9AT: not on the flood risk listHP18 9AW: not on the flood risk listHP18 9AX: not on the flood risk listHP18 9AY: not on the flood risk listHP18 9BA: not on the flood risk listHP18 9BB: not on the flood risk listHP18 9BE: not on the flood risk listHP18 9BF: not on the flood risk listHP18 9BG: not on the flood risk listHP18 9BJ: not on the flood risk listHP18 9BL: not on the flood risk listHP18 9BN: not on the flood risk listHP18 9BP: not on the flood risk listHP18 9BQ: not on the flood risk listHP18 9BS: not on the flood risk listHP18 9BT: not on the flood risk listHP18 9BU: not on the flood risk listHP18 9BW: not on the flood risk listHP18 9BY: not on the flood risk listHP18 9BZ: not on the flood risk listHP18 9DA: not on the flood risk listHP18 9DB: not on the flood risk listHP18 9DE: not on the flood risk listHP18 9DF: not on the flood risk listHP18 9DG: not on the flood risk listHP18 9DH: not on the flood risk listHP18 9DJ: not on the flood risk listHP18 9DL: not on the flood risk listHP18 9DN: not on the flood risk listHP18 9DP: not on the flood risk listHP18 9DQ: not on the flood risk listHP18 9DR: not on the flood risk listHP18 9DS: not on the flood risk listHP18 9DT: not on the flood risk listHP18 9DU: not on the flood risk listHP18 9DW: not on the flood risk listHP18 9DX: not on the flood risk listHP18 9DZ: not on the flood risk listHP18 9ED: not on the flood risk listHP18 9EE: not on the flood risk listHP18 9EF: not on the flood risk listHP18 9EG: not on the flood risk listHP18 9EJ: not on the flood risk listHP18 9EL: not on the flood risk listHP18 9EN: not on the flood risk listHP18 9EP: not on the flood risk listHP18 9EQ: not on the flood risk listHP18 9ER: not on the flood risk listHP18 9ES: not on the flood risk listHP18 9ET: not on the flood risk listHP18 9EU: not on the flood risk listHP18 9EX: not on the flood risk listHP18 9EY: not on the flood risk listHP18 9EZ: not on the flood risk listHP18 9FA: not on the flood risk listHP18 9FE: not on the flood risk listHP18 9FF: not on the flood risk listHP18 9FG: not on the flood risk listHP18 9FN: not on the flood risk listHP18 9FQ: not on the flood risk listHP18 9FU: not on the flood risk listHP18 9FY: not on the flood risk listHP18 9FZ: not on the flood risk listHP18 9GE: not on the flood risk listHP18 9GF: not on the flood risk listHP18 9GG: not on the flood risk listHP18 9GH: not on the flood risk listHP18 9GJ: not on the flood risk listHP18 9GL: not on the flood risk listHP18 9GN: not on the flood risk listHP18 9GP: not on the flood risk listHP18 9GQ: not on the flood risk listHP18 9GR: not on the flood risk listHP18 9GS: not on the flood risk listHP18 9GU: not on the flood risk listHP18 9HA: not on the flood risk listHP18 9HD: not on the flood risk listHP18 9HE: not on the flood risk listHP18 9HG: not on the flood risk listHP18 9HH: not on the flood risk listHP18 9HL: not on the flood risk listHP18 9HP: not on the flood risk listHP18 9HQ: not on the flood risk listHP18 9HS: not on the flood risk listHP18 9HT: not on the flood risk listHP18 9HW: not on the flood risk listHP18 9HX: not on the flood risk listHP18 9HY: not on the flood risk listHP18 9JA: not on the flood risk listHP18 9JD: not on the flood risk listHP18 9JF: not on the flood risk listHP18 9JG: not on the flood risk listHP18 9JH: not on the flood risk listHP18 9JJ: not on the flood risk listHP18 9JL: not on the flood risk listHP18 9JN: not on the flood risk listHP18 9JP: not on the flood risk listHP18 9JQ: not on the flood risk listHP18 9JR: not on the flood risk listHP18 9JS: not on the flood risk listHP18 9JT: not on the flood risk listHP18 9JW: not on the flood risk listHP18 9JX: not on the flood risk listHP18 9JY: not on the flood risk listHP18 9JZ: not on the flood risk listHP18 9LB: not on the flood risk listHP18 9LD: not on the flood risk listHP18 9LE: not on the flood risk listHP18 9LG: not on the flood risk listHP18 9LJ: not on the flood risk listHP18 9LL: not on the flood risk listHP18 9LN: not on the flood risk listHP18 9LP: not on the flood risk listHP18 9LQ: not on the flood risk listHP18 9LR: not on the flood risk listHP18 9LS: not on the flood risk listHP18 9LT: not on the flood risk listHP18 9LU: not on the flood risk listHP18 9LW: not on the flood risk listHP18 9LX: not on the flood risk listHP18 9LY: not on the flood risk listHP18 9LZ: not on the flood risk listHP18 9NA: not on the flood risk listHP18 9NB: not on the flood risk listHP18 9ND: not on the flood risk listHP18 9NE: not on the flood risk listHP18 9NG: not on the flood risk listHP18 9NJ: not on the flood risk listHP18 9NP: not on the flood risk listHP18 9NQ: not on the flood risk listHP18 9NR: not on the flood risk listHP18 9NS: not on the flood risk listHP18 9NU: not on the flood risk listHP18 9PB: not on the flood risk listHP18 9PD: not on the flood risk listHP18 9PE: not on the flood risk listHP18 9PF: not on the flood risk listHP18 9PG: not on the flood risk listHP18 9PH: not on the flood risk listHP18 9PL: not on the flood risk listHP18 9PN: not on the flood risk listHP18 9PS: not on the flood risk listHP18 9PT: not on the flood risk listHP18 9PU: not on the flood risk listHP18 9PW: not on the flood risk listHP18 9PX: not on the flood risk listHP18 9PY: not on the flood risk listHP18 9PZ: not on the flood risk listHP18 9QA: not on the flood risk listHP18 9QB: not on the flood risk listHP18 9QD: not on the flood risk listHP18 9QE: not on the flood risk listHP18 9QF: not on the flood risk listHP18 9QH: not on the flood risk listHP18 9QJ: not on the flood risk listHP18 9QL: not on the flood risk listHP18 9QN: not on the flood risk listHP18 9QQ: not on the flood risk listHP18 9QR: not on the flood risk listHP18 9QS: not on the flood risk listHP18 9QT: not on the flood risk listHP18 9QU: not on the flood risk listHP18 9QW: not on the flood risk listHP18 9QX: not on the flood risk listHP18 9QY: not on the flood risk listHP18 9QZ: not on the flood risk listHP18 9RA: not on the flood risk listHP18 9RB: not on the flood risk listHP18 9RD: not on the flood risk listHP18 9RF: not on the flood risk listHP18 9RG: not on the flood risk listHP18 9RP: not on the flood risk listHP18 9RQ: not on the flood risk listHP18 9RR: not on the flood risk listHP18 9RS: not on the flood risk listHP18 9RT: not on the flood risk listHP18 9RU: not on the flood risk listHP18 9RW: not on the flood risk listHP18 9RX: not on the flood risk listHP18 9RZ: not on the flood risk listHP18 9SA: not on the flood risk listHP18 9SB: not on the flood risk listHP18 9SD: not on the flood risk listHP18 9SE: not on the flood risk listHP18 9SG: not on the flood risk listHP18 9SH: not on the flood risk listHP18 9SJ: not on the flood risk listHP18 9SL: not on the flood risk listHP18 9SN: not on the flood risk listHP18 9SP: not on the flood risk listHP18 9ST: not on the flood risk listHP18 9SU: not on the flood risk listHP18 9SW: not on the flood risk listHP18 9SY: not on the flood risk listHP18 9SZ: not on the flood risk listHP18 9TA: not on the flood risk listHP18 9TB: not on the flood risk listHP18 9TD: not on the flood risk listHP18 9TE: not on the flood risk listHP18 9TG: not on the flood risk listHP18 9TH: not on the flood risk listHP18 9TJ: not on the flood risk listHP18 9TL: not on the flood risk listHP18 9TN: not on the flood risk listHP18 9TP: not on the flood risk listHP18 9TQ: not on the flood risk listHP18 9TU: not on the flood risk listHP18 9TX: not on the flood risk listHP18 9TY: not on the flood risk listHP18 9TZ: not on the flood risk listHP18 9UA: not on the flood risk listHP18 9UB: not on the flood risk listHP18 9UD: not on the flood risk listHP18 9UE: not on the flood risk listHP18 9UH: not on the flood risk listHP18 9UJ: not on the flood risk listHP18 9UP: not on the flood risk listHP18 9UR: not on the flood risk listHP18 9UT: not on the flood risk listHP18 9UW: not on the flood risk listHP18 9UX: not on the flood risk listHP18 9UY: not on the flood risk listHP18 9UZ: not on the flood risk listHP18 9XA: not on the flood risk listHP18 9XB: not on the flood risk listHP18 9XD: not on the flood risk listHP18 9XE: not on the flood risk listHP18 9XF: not on the flood risk listHP18 9XH: not on the flood risk listHP18 9XU: not on the flood risk listHP18 9XX: not on the flood risk listHP18 9XZ: not on the flood risk listHP18 9YD: not on the flood risk listHP18 9YS: not on the flood risk listHP18 9HU: low flood risk at worstHP18 9JB: low flood risk at worstHP18 9LA: low flood risk at worstHP18 9NF: low flood risk at worstHP18 9NH: low flood risk at worstHP18 9PA: low flood risk at worstHP18 9SF: low flood risk at worstHP18 9UN: low flood risk at worstHP18 9EW: medium flood risk at worstHP18 9HN: medium flood risk at worstHP18 9NY: medium flood risk at worstHP18 9PJ: medium flood risk at worstHP18 9HF: high flood riskHP18 9HJ: high flood riskHP18 9HR: high flood riskHP18 9HZ: high flood riskHP18 9JE: high flood riskHP18 9NT: high flood riskHP18 9NZ: high flood riskHP18 9PQ: high flood riskHP18 9UL: high flood riskHP18 9UU: high flood risk Long Crendon Map of every postcode in the HP18 9 sector, by flood risk Of the 292 postcodes in the HP18 9 sector that ONS places, 10 have a home or business at high risk, 4 are at medium risk at worst, 8 are at low risk at worst and 270 are not on the Environment Agency's at-risk list. Places named: Long Crendon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. M40 Long Crendon
  • A home or business at high risk: 10
  • At medium risk at worst: 4
  • At low risk at worst: 8
  • At very low risk only: 0
  • Not on the at-risk list: 270

Of the 292 postcodes in the HP18 9 sector that ONS places, 10 have a home or business at high risk, 4 are at medium risk at worst, 8 are at low risk at worst and 270 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.

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 9JE4 at high riskHP18 9UL4 at high riskHP18 9PQ3 at high riskHP18 9HF2 at high riskHP18 9NT2 at high riskHP18 9NZ1 at high riskHP18 9HJ1 at high riskHP18 9HR1 at high riskHP18 9HZ1 at high riskHP18 9UU1 at high risk

What do homes sell for in HP18 9?

Homes in HP18 9 sold for a typical £552,500 in the 12 months to August 2026, across 72 sales, down 3.1% on the 12 months before, HM Land Registry's figures show.

£552,500 typical price, the 12 months to August 2026
£570,000 12 months to August 2025
▼ down 3.1% on the 12 months before
  • Detached £752,500 36 sales
  • Semi-detached £440,000 19 sales
  • Terraced £399,471 12 sales
  • Flat or maisonette £172,500 5 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 HP18 9. 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 9

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 9AAHP18 9ABHP18 9ADHP18 9AEHP18 9AFHP18 9AGHP18 9AHHP18 9AJHP18 9ALHP18 9ANHP18 9APHP18 9AQHP18 9ARHP18 9ASHP18 9ATHP18 9AUHP18 9AWHP18 9AXHP18 9AYHP18 9AZHP18 9BAHP18 9BBHP18 9BEHP18 9BFHP18 9BGHP18 9BHHP18 9BJHP18 9BLHP18 9BNHP18 9BPHP18 9BQHP18 9BSHP18 9BTHP18 9BUHP18 9BWHP18 9BXHP18 9BYHP18 9BZHP18 9DAHP18 9DBHP18 9DDHP18 9DEHP18 9DFHP18 9DGHP18 9DHHP18 9DJHP18 9DLHP18 9DNHP18 9DPHP18 9DQHP18 9DRHP18 9DSHP18 9DTHP18 9DUHP18 9DWHP18 9DXHP18 9DZHP18 9EDHP18 9EEHP18 9EFHP18 9EGHP18 9EJHP18 9ELHP18 9ENHP18 9EPHP18 9EQHP18 9ERHP18 9ESHP18 9ETHP18 9EUHP18 9EWHP18 9EXHP18 9EYHP18 9EZHP18 9FAHP18 9FEHP18 9FFHP18 9FGHP18 9FNHP18 9FQHP18 9FUHP18 9FWHP18 9FYHP18 9FZHP18 9GDHP18 9GEHP18 9GFHP18 9GGHP18 9GHHP18 9GJHP18 9GLHP18 9GNHP18 9GPHP18 9GQHP18 9GRHP18 9GSHP18 9GUHP18 9HAHP18 9HBHP18 9HDHP18 9HEHP18 9HFHP18 9HGHP18 9HHHP18 9HJHP18 9HLHP18 9HNHP18 9HPHP18 9HQHP18 9HRHP18 9HSHP18 9HTHP18 9HUHP18 9HWHP18 9HXHP18 9HYHP18 9HZHP18 9JAHP18 9JBHP18 9JDHP18 9JEHP18 9JFHP18 9JGHP18 9JHHP18 9JJHP18 9JLHP18 9JNHP18 9JPHP18 9JQHP18 9JRHP18 9JSHP18 9JTHP18 9JUHP18 9JWHP18 9JXHP18 9JYHP18 9JZHP18 9LAHP18 9LBHP18 9LDHP18 9LEHP18 9LGHP18 9LJHP18 9LLHP18 9LNHP18 9LPHP18 9LQHP18 9LRHP18 9LSHP18 9LTHP18 9LUHP18 9LWHP18 9LXHP18 9LYHP18 9LZHP18 9NAHP18 9NBHP18 9NDHP18 9NEHP18 9NFHP18 9NGHP18 9NHHP18 9NJHP18 9NLHP18 9NPHP18 9NQHP18 9NRHP18 9NSHP18 9NTHP18 9NUHP18 9NWHP18 9NXHP18 9NYHP18 9NZHP18 9PAHP18 9PBHP18 9PDHP18 9PEHP18 9PFHP18 9PGHP18 9PHHP18 9PJHP18 9PLHP18 9PNHP18 9PPHP18 9PQHP18 9PSHP18 9PTHP18 9PUHP18 9PWHP18 9PXHP18 9PYHP18 9PZHP18 9QAHP18 9QBHP18 9QDHP18 9QEHP18 9QFHP18 9QGHP18 9QHHP18 9QJHP18 9QLHP18 9QNHP18 9QPHP18 9QQHP18 9QRHP18 9QSHP18 9QTHP18 9QUHP18 9QWHP18 9QXHP18 9QYHP18 9QZHP18 9RAHP18 9RBHP18 9RDHP18 9REHP18 9RFHP18 9RGHP18 9RPHP18 9RQHP18 9RRHP18 9RSHP18 9RTHP18 9RUHP18 9RWHP18 9RXHP18 9RYHP18 9RZHP18 9SAHP18 9SBHP18 9SDHP18 9SEHP18 9SFHP18 9SGHP18 9SHHP18 9SJHP18 9SLHP18 9SNHP18 9SPHP18 9STHP18 9SUHP18 9SWHP18 9SXHP18 9SYHP18 9SZHP18 9TAHP18 9TBHP18 9TDHP18 9TEHP18 9TFHP18 9TGHP18 9THHP18 9TJHP18 9TLHP18 9TNHP18 9TPHP18 9TQHP18 9TUHP18 9TWHP18 9TXHP18 9TYHP18 9TZHP18 9UAHP18 9UBHP18 9UDHP18 9UEHP18 9UHHP18 9UJHP18 9ULHP18 9UNHP18 9UPHP18 9URHP18 9UTHP18 9UUHP18 9UWHP18 9UXHP18 9UYHP18 9UZHP18 9WYHP18 9XAHP18 9XBHP18 9XDHP18 9XEHP18 9XFHP18 9XHHP18 9XUHP18 9XXHP18 9XZHP18 9YAHP18 9YDHP18 9YS

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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