HP20 1 postcode sector in the HP20 district

HP20 1 is a sector of the HP20 district: every postcode that starts HP20 1. It has 245 postcodes in use, 29 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 HP20 1 sector, by flood risk

Map of every postcode in the HP20 1 sector, by flood risk Of the 245 postcodes in the HP20 1 sector that ONS places, 6 have a home or business at high risk, 3 are at medium risk at worst, 24 are at low risk at worst, 9 are at very low risk only and 203 are not on the Environment Agency's at-risk list. Places named: Aylesbury. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A4157 HP20 1AA: not on the flood risk listHP20 1AD: not on the flood risk listHP20 1AE: not on the flood risk listHP20 1AG: not on the flood risk listHP20 1AH: not on the flood risk listHP20 1AJ: not on the flood risk listHP20 1AN: not on the flood risk listHP20 1AP: not on the flood risk listHP20 1AT: not on the flood risk listHP20 1AZ: not on the flood risk listHP20 1BA: not on the flood risk listHP20 1BB: not on the flood risk listHP20 1BE: not on the flood risk listHP20 1BF: not on the flood risk listHP20 1BG: not on the flood risk listHP20 1BJ: not on the flood risk listHP20 1BL: not on the flood risk listHP20 1BN: not on the flood risk listHP20 1BQ: not on the flood risk listHP20 1BS: not on the flood risk listHP20 1BT: not on the flood risk listHP20 1BU: not on the flood risk listHP20 1BW: not on the flood risk listHP20 1BX: not on the flood risk listHP20 1DG: not on the flood risk listHP20 1DL: not on the flood risk listHP20 1DP: not on the flood risk listHP20 1DR: not on the flood risk listHP20 1DT: not on the flood risk listHP20 1DY: not on the flood risk listHP20 1DZ: not on the flood risk listHP20 1EA: not on the flood risk listHP20 1ED: not on the flood risk listHP20 1EE: not on the flood risk listHP20 1EG: not on the flood risk listHP20 1EH: not on the flood risk listHP20 1EJ: not on the flood risk listHP20 1EN: not on the flood risk listHP20 1EP: not on the flood risk listHP20 1EQ: not on the flood risk listHP20 1ER: not on the flood risk listHP20 1ES: not on the flood risk listHP20 1ET: not on the flood risk listHP20 1EW: not on the flood risk listHP20 1EX: not on the flood risk listHP20 1EZ: not on the flood risk listHP20 1FA: not on the flood risk listHP20 1FN: not on the flood risk listHP20 1GD: not on the flood risk listHP20 1GL: not on the flood risk listHP20 1HA: not on the flood risk listHP20 1HB: not on the flood risk listHP20 1HD: not on the flood risk listHP20 1HG: not on the flood risk listHP20 1HH: not on the flood risk listHP20 1HJ: not on the flood risk listHP20 1HL: not on the flood risk listHP20 1HN: not on the flood risk listHP20 1HP: not on the flood risk listHP20 1HQ: not on the flood risk listHP20 1HR: not on the flood risk listHP20 1HS: not on the flood risk listHP20 1HT: not on the flood risk listHP20 1HW: not on the flood risk listHP20 1HX: not on the flood risk listHP20 1HY: not on the flood risk listHP20 1HZ: not on the flood risk listHP20 1JA: not on the flood risk listHP20 1JB: not on the flood risk listHP20 1JD: not on the flood risk listHP20 1JE: not on the flood risk listHP20 1JF: not on the flood risk listHP20 1JG: not on the flood risk listHP20 1JH: not on the flood risk listHP20 1JJ: not on the flood risk listHP20 1JL: not on the flood risk listHP20 1JN: not on the flood risk listHP20 1JQ: not on the flood risk listHP20 1JR: not on the flood risk listHP20 1JS: not on the flood risk listHP20 1JU: not on the flood risk listHP20 1JW: not on the flood risk listHP20 1JX: not on the flood risk listHP20 1JY: not on the flood risk listHP20 1LD: not on the flood risk listHP20 1LE: not on the flood risk listHP20 1LF: not on the flood risk listHP20 1LG: not on the flood risk listHP20 1LH: not on the flood risk listHP20 1LJ: not on the flood risk listHP20 1LL: not on the flood risk listHP20 1LN: not on the flood risk listHP20 1LP: not on the flood risk listHP20 1LQ: not on the flood risk listHP20 1LR: not on the flood risk listHP20 1LS: not on the flood risk listHP20 1LT: not on the flood risk listHP20 1LU: not on the flood risk listHP20 1LW: not on the flood risk listHP20 1LX: not on the flood risk listHP20 1LY: not on the flood risk listHP20 1LZ: not on the flood risk listHP20 1NA: not on the flood risk listHP20 1NB: not on the flood risk listHP20 1ND: not on the flood risk listHP20 1NE: not on the flood risk listHP20 1NG: not on the flood risk listHP20 1NH: not on the flood risk listHP20 1NJ: not on the flood risk listHP20 1NL: not on the flood risk listHP20 1NN: not on the flood risk listHP20 1NP: not on the flood risk listHP20 1NQ: not on the flood risk listHP20 1NR: not on the flood risk listHP20 1NS: not on the flood risk listHP20 1NT: not on the flood risk listHP20 1NU: not on the flood risk listHP20 1NW: not on the flood risk listHP20 1NX: not on the flood risk listHP20 1PE: not on the flood risk listHP20 1PH: not on the flood risk listHP20 1PL: not on the flood risk listHP20 1PN: not on the flood risk listHP20 1PT: not on the flood risk listHP20 1PZ: not on the flood risk listHP20 1QA: not on the flood risk listHP20 1QB: not on the flood risk listHP20 1QD: not on the flood risk listHP20 1QE: not on the flood risk listHP20 1QF: not on the flood risk listHP20 1QG: not on the flood risk listHP20 1QR: not on the flood risk listHP20 1QS: not on the flood risk listHP20 1QX: not on the flood risk listHP20 1QY: not on the flood risk listHP20 1RA: not on the flood risk listHP20 1RE: not on the flood risk listHP20 1RF: not on the flood risk listHP20 1RJ: not on the flood risk listHP20 1RP: not on the flood risk listHP20 1RQ: not on the flood risk listHP20 1RS: not on the flood risk listHP20 1RW: not on the flood risk listHP20 1SA: not on the flood risk listHP20 1SB: not on the flood risk listHP20 1SD: not on the flood risk listHP20 1SE: not on the flood risk listHP20 1SF: not on the flood risk listHP20 1SH: not on the flood risk listHP20 1SL: not on the flood risk listHP20 1SN: not on the flood risk listHP20 1SQ: not on the flood risk listHP20 1ST: not on the flood risk listHP20 1SU: not on the flood risk listHP20 1TA: not on the flood risk listHP20 1TB: not on the flood risk listHP20 1TD: not on the flood risk listHP20 1TH: not on the flood risk listHP20 1TJ: not on the flood risk listHP20 1TN: not on the flood risk listHP20 1TR: not on the flood risk listHP20 1TS: not on the flood risk listHP20 1TX: not on the flood risk listHP20 1TZ: not on the flood risk listHP20 1UA: not on the flood risk listHP20 1UL: not on the flood risk listHP20 1UR: not on the flood risk listHP20 1US: not on the flood risk listHP20 1XB: not on the flood risk listHP20 1XE: not on the flood risk listHP20 1XF: not on the flood risk listHP20 1XG: not on the flood risk listHP20 1XH: not on the flood risk listHP20 1XJ: not on the flood risk listHP20 1XL: not on the flood risk listHP20 1XN: not on the flood risk listHP20 1XP: not on the flood risk listHP20 1XQ: not on the flood risk listHP20 1XR: not on the flood risk listHP20 1XS: not on the flood risk listHP20 1XT: not on the flood risk listHP20 1XU: not on the flood risk listHP20 1XW: not on the flood risk listHP20 1XX: not on the flood risk listHP20 1XY: not on the flood risk listHP20 1XZ: not on the flood risk listHP20 1YP: not on the flood risk listHP20 1AS: very low flood risk onlyHP20 1AW: very low flood risk onlyHP20 1BD: very low flood risk onlyHP20 1BH: very low flood risk onlyHP20 1PA: very low flood risk onlyHP20 1PB: very low flood risk onlyHP20 1PD: very low flood risk onlyHP20 1QH: very low flood risk onlyHP20 1RY: very low flood risk onlyHP20 1AF: low flood risk at worstHP20 1DA: low flood risk at worstHP20 1DB: low flood risk at worstHP20 1DH: low flood risk at worstHP20 1DN: low flood risk at worstHP20 1DU: low flood risk at worstHP20 1DW: low flood risk at worstHP20 1EB: low flood risk at worstHP20 1FE: low flood risk at worstHP20 1FF: low flood risk at worstHP20 1FW: low flood risk at worstHP20 1FY: low flood risk at worstHP20 1FZ: low flood risk at worstHP20 1GF: low flood risk at worstHP20 1PJ: low flood risk at worstHP20 1PQ: low flood risk at worstHP20 1PS: low flood risk at worstHP20 1PU: low flood risk at worstHP20 1PW: low flood risk at worstHP20 1PY: low flood risk at worstHP20 1QN: low flood risk at worstHP20 1RB: low flood risk at worstHP20 1RD: low flood risk at worstHP20 1RU: low flood risk at worstHP20 1DX: medium flood risk at worstHP20 1JT: medium flood risk at worstHP20 1PX: medium flood risk at worstHP20 1AL: high flood riskHP20 1AQ: high flood riskHP20 1AR: high flood riskHP20 1AY: high flood riskHP20 1DQ: high flood riskHP20 1UG: high flood risk Aylesbury Map of every postcode in the HP20 1 sector, by flood risk Of the 245 postcodes in the HP20 1 sector that ONS places, 6 have a home or business at high risk, 3 are at medium risk at worst, 24 are at low risk at worst, 9 are at very low risk only and 203 are not on the Environment Agency's at-risk list. Places named: Aylesbury. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Aylesbury
  • A home or business at high risk: 6
  • At medium risk at worst: 3
  • At low risk at worst: 24
  • At very low risk only: 9
  • Not on the at-risk list: 203

Of the 245 postcodes in the HP20 1 sector that ONS places, 6 have a home or business at high risk, 3 are at medium risk at worst, 24 are at low risk at worst, 9 are at very low risk only and 203 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.

HP20 1DQ12 at high riskHP20 1AL10 at high riskHP20 1AR7 at high riskHP20 1AY2 at high riskHP20 1AQ1 at high riskHP20 1UG1 at high risk

What do homes sell for in HP20 1?

Homes in HP20 1 sold for a typical £317,500 in the 12 months to August 2026, across 97 sales, up 9.5% on the 12 months before, HM Land Registry's figures show.

£317,500 typical price, the 12 months to August 2026
£290,000 12 months to August 2025
▲ up 9.5% on the 12 months before
  • Detached £552,000 12 sales
  • Semi-detached £420,000 29 sales
  • Terraced £305,000 35 sales
  • Flat or maisonette £203,500 21 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 HP20 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 HP20 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.

HP20 1AAHP20 1ADHP20 1AEHP20 1AFHP20 1AGHP20 1AHHP20 1AJHP20 1ALHP20 1ANHP20 1APHP20 1AQHP20 1ARHP20 1ASHP20 1ATHP20 1AWHP20 1AYHP20 1AZHP20 1BAHP20 1BBHP20 1BDHP20 1BEHP20 1BFHP20 1BGHP20 1BHHP20 1BJHP20 1BLHP20 1BNHP20 1BQHP20 1BSHP20 1BTHP20 1BUHP20 1BWHP20 1BXHP20 1DAHP20 1DBHP20 1DGHP20 1DHHP20 1DLHP20 1DNHP20 1DPHP20 1DQHP20 1DRHP20 1DTHP20 1DUHP20 1DWHP20 1DXHP20 1DYHP20 1DZHP20 1EAHP20 1EBHP20 1EDHP20 1EEHP20 1EGHP20 1EHHP20 1EJHP20 1ENHP20 1EPHP20 1EQHP20 1ERHP20 1ESHP20 1ETHP20 1EWHP20 1EXHP20 1EZHP20 1FAHP20 1FEHP20 1FFHP20 1FNHP20 1FWHP20 1FYHP20 1FZHP20 1GDHP20 1GFHP20 1GLHP20 1HAHP20 1HBHP20 1HDHP20 1HGHP20 1HHHP20 1HJHP20 1HLHP20 1HNHP20 1HPHP20 1HQHP20 1HRHP20 1HSHP20 1HTHP20 1HWHP20 1HXHP20 1HYHP20 1HZHP20 1JAHP20 1JBHP20 1JDHP20 1JEHP20 1JFHP20 1JGHP20 1JHHP20 1JJHP20 1JLHP20 1JNHP20 1JQHP20 1JRHP20 1JSHP20 1JTHP20 1JUHP20 1JWHP20 1JXHP20 1JYHP20 1LDHP20 1LEHP20 1LFHP20 1LGHP20 1LHHP20 1LJHP20 1LLHP20 1LNHP20 1LPHP20 1LQHP20 1LRHP20 1LSHP20 1LTHP20 1LUHP20 1LWHP20 1LXHP20 1LYHP20 1LZHP20 1NAHP20 1NBHP20 1NDHP20 1NEHP20 1NGHP20 1NHHP20 1NJHP20 1NLHP20 1NNHP20 1NPHP20 1NQHP20 1NRHP20 1NSHP20 1NTHP20 1NUHP20 1NWHP20 1NXHP20 1PAHP20 1PBHP20 1PDHP20 1PEHP20 1PHHP20 1PJHP20 1PLHP20 1PNHP20 1PQHP20 1PSHP20 1PTHP20 1PUHP20 1PWHP20 1PXHP20 1PYHP20 1PZHP20 1QAHP20 1QBHP20 1QDHP20 1QEHP20 1QFHP20 1QGHP20 1QHHP20 1QNHP20 1QRHP20 1QSHP20 1QXHP20 1QYHP20 1RAHP20 1RBHP20 1RDHP20 1REHP20 1RFHP20 1RJHP20 1RPHP20 1RQHP20 1RSHP20 1RUHP20 1RWHP20 1RYHP20 1SAHP20 1SBHP20 1SDHP20 1SEHP20 1SFHP20 1SHHP20 1SJHP20 1SLHP20 1SNHP20 1SQHP20 1STHP20 1SUHP20 1TAHP20 1TBHP20 1TDHP20 1THHP20 1TJHP20 1TNHP20 1TRHP20 1TSHP20 1TWHP20 1TXHP20 1TZHP20 1UAHP20 1UDHP20 1UGHP20 1ULHP20 1UPHP20 1URHP20 1USHP20 1UUHP20 1UXHP20 1UYHP20 1UZHP20 1XAHP20 1XBHP20 1XEHP20 1XFHP20 1XGHP20 1XHHP20 1XJHP20 1XLHP20 1XNHP20 1XPHP20 1XQHP20 1XRHP20 1XSHP20 1XTHP20 1XUHP20 1XWHP20 1XXHP20 1XYHP20 1XZHP20 1YGHP20 1YHHP20 1YNHP20 1YPHP20 1YQHP20 1YUHP20 1YWHP20 1YZ

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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