PO20 9 postcode sector in the PO20 district

PO20 9 is a sector of the PO20 district: every postcode that starts PO20 9. It has 85 postcodes in use, one of them a large-user postcode. 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 PO20 9 sector, by flood risk

Map of every postcode in the PO20 9 sector, by flood risk Of the 85 postcodes in the PO20 9 sector that ONS places, 15 have a home or business at high risk, 6 are at medium risk at worst, 5 are at low risk at worst, 3 are at very low risk only and 56 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 12 postcodes at high or medium risk. Places named: Selsey. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. PO20 9AA: not on the flood risk listPO20 9AB: not on the flood risk listPO20 9AD: not on the flood risk listPO20 9AE: not on the flood risk listPO20 9AF: not on the flood risk listPO20 9AG: not on the flood risk listPO20 9AH: not on the flood risk listPO20 9AL: not on the flood risk listPO20 9AN: not on the flood risk listPO20 9AP: not on the flood risk listPO20 9AQ: not on the flood risk listPO20 9AR: not on the flood risk listPO20 9AS: not on the flood risk listPO20 9AT: not on the flood risk listPO20 9AU: not on the flood risk listPO20 9AW: not on the flood risk listPO20 9AX: not on the flood risk listPO20 9AZ: not on the flood risk listPO20 9BA: not on the flood risk listPO20 9BB: not on the flood risk listPO20 9BD: not on the flood risk listPO20 9BE: not on the flood risk listPO20 9BN: not on the flood risk listPO20 9BP: not on the flood risk listPO20 9BU: not on the flood risk listPO20 9DA: not on the flood risk listPO20 9DB: not on the flood risk listPO20 9DE: not on the flood risk listPO20 9DH: not on the flood risk listPO20 9DJ: not on the flood risk listPO20 9DQ: not on the flood risk listPO20 9DS: not on the flood risk listPO20 9DU: not on the flood risk listPO20 9DW: not on the flood risk listPO20 9DX: not on the flood risk listPO20 9DY: not on the flood risk listPO20 9DZ: not on the flood risk listPO20 9EA: not on the flood risk listPO20 9EB: not on the flood risk listPO20 9EH: not on the flood risk listPO20 9ER: not on the flood risk listPO20 9ES: not on the flood risk listPO20 9ET: not on the flood risk listPO20 9EU: not on the flood risk listPO20 9EX: not on the flood risk listPO20 9EY: not on the flood risk listPO20 9EZ: not on the flood risk listPO20 9HD: not on the flood risk listPO20 9HJ: not on the flood risk listPO20 9HL: not on the flood risk listPO20 9HP: not on the flood risk listPO20 9JA: not on the flood risk listPO20 9JB: not on the flood risk listPO20 9JN: not on the flood risk listPO20 9JP: not on the flood risk listPO20 9JW: not on the flood risk listPO20 9DG: very low flood risk onlyPO20 9HT: very low flood risk onlyPO20 9JD: very low flood risk onlyPO20 9AY: low flood risk at worstPO20 9DD: low flood risk at worstPO20 9ED: low flood risk at worstPO20 9EP: low flood risk at worstPO20 9HA: low flood risk at worstPO20 9BG: medium flood risk at worstPO20 9BY: medium flood risk at worstPO20 9DF: medium flood risk at worstPO20 9DP: medium flood risk at worstPO20 9DR: medium flood risk at worstPO20 9EJ: medium flood risk at worstPO20 9BF: high flood riskPO20 9BH: high flood riskPO20 9BJ: high flood riskPO20 9BL: high flood riskPO20 9BQ: high flood riskPO20 9BS: high flood riskPO20 9BT: high flood riskPO20 9BX: high flood riskPO20 9BZ: high flood riskPO20 9DL: high flood riskPO20 9DT: high flood riskPO20 9EE: high flood riskPO20 9EL: high flood riskPO20 9HB: high flood riskPO20 9HR: high flood risk Selsey 12 postcodes at high or medium risk, outlined: this goes to PO20 9HB, the one with most homes and businesses at high risk12 postcodes at high or medium risk Map of every postcode in the PO20 9 sector, by flood risk Of the 85 postcodes in the PO20 9 sector that ONS places, 15 have a home or business at high risk, 6 are at medium risk at worst, 5 are at low risk at worst, 3 are at very low risk only and 56 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 12 postcodes at high or medium risk. Places named: Selsey. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Selsey
  • A home or business at high risk: 15
  • At medium risk at worst: 6
  • At low risk at worst: 5
  • At very low risk only: 3
  • Not on the at-risk list: 56
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 85 postcodes in the PO20 9 sector that ONS places, 15 have a home or business at high risk, 6 are at medium risk at worst, 5 are at low risk at worst, 3 are at very low risk only and 56 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 160 metres of each other. It is not a boundary, and no boundary is drawn.

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

15 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

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

PO20 9BJ117 at high riskPO20 9HB39 at high riskPO20 9EL35 at high riskPO20 9BL29 at high riskPO20 9BS24 at high riskPO20 9BX23 at high riskPO20 9BT19 at high riskPO20 9EE16 at high riskPO20 9BZ15 at high riskPO20 9BH12 at high riskPO20 9BQ8 at high riskPO20 9HR2 at high risk

Where the postcodes at high or medium risk lie together

  • 12 postcodes at high or medium risk, outlined on the map. PO20 9HB, is the one with most homes and businesses at high risk.

What do homes sell for in PO20 9?

Homes in PO20 9 sold for a typical £420,000 in the 12 months to August 2026, across 21 sales, up 20% on the 12 months before, HM Land Registry's figures show.

£420,000 typical price, the 12 months to August 2026
£350,000 12 months to August 2025
▲ up 20% on the 12 months before
  • Detached £495,000 12 sales
  • Semi-detached £325,000 5 sales
  • Terraced 3 sales, too few to price
  • Flat or maisonette 1 sale, too few to price

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 PO20 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 PO20 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.

PO20 9AAPO20 9ABPO20 9ADPO20 9AEPO20 9AFPO20 9AGPO20 9AHPO20 9ALPO20 9ANPO20 9APPO20 9AQPO20 9ARPO20 9ASPO20 9ATPO20 9AUPO20 9AWPO20 9AXPO20 9AYPO20 9AZPO20 9BAPO20 9BBPO20 9BDPO20 9BEPO20 9BFPO20 9BGPO20 9BHPO20 9BJPO20 9BLPO20 9BNPO20 9BPPO20 9BQPO20 9BSPO20 9BTPO20 9BUPO20 9BXPO20 9BYPO20 9BZPO20 9DAPO20 9DBPO20 9DDPO20 9DEPO20 9DFPO20 9DGPO20 9DHPO20 9DJPO20 9DLPO20 9DPPO20 9DQPO20 9DRPO20 9DSPO20 9DTPO20 9DUPO20 9DWPO20 9DXPO20 9DYPO20 9DZPO20 9EAPO20 9EBPO20 9EDPO20 9EEPO20 9EHPO20 9EJPO20 9ELPO20 9EPPO20 9ERPO20 9ESPO20 9ETPO20 9EUPO20 9EXPO20 9EYPO20 9EZPO20 9HAPO20 9HBPO20 9HDPO20 9HJPO20 9HLPO20 9HPPO20 9HRPO20 9HTPO20 9JAPO20 9JBPO20 9JDPO20 9JNPO20 9JPPO20 9JW

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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