PO18 9 postcode sector in the PO18 district

PO18 9 is a sector of the PO18 district: every postcode that starts PO18 9. It has 140 postcodes in use, 2 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 PO18 9 sector, by flood risk

Map of every postcode in the PO18 9 sector, by flood risk Of the 140 postcodes in the PO18 9 sector that ONS places, 7 have a home or business at high risk, 1 are at medium risk at worst, 2 are at low risk at worst and 130 are not on the Environment Agency's at-risk list. Places named: Westbourne. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A27 PO18 9AA: not on the flood risk listPO18 9AB: not on the flood risk listPO18 9AD: not on the flood risk listPO18 9AE: not on the flood risk listPO18 9AF: not on the flood risk listPO18 9AH: not on the flood risk listPO18 9AJ: not on the flood risk listPO18 9AL: not on the flood risk listPO18 9AN: not on the flood risk listPO18 9AP: not on the flood risk listPO18 9AR: not on the flood risk listPO18 9AS: not on the flood risk listPO18 9AT: not on the flood risk listPO18 9AU: not on the flood risk listPO18 9AW: not on the flood risk listPO18 9AX: not on the flood risk listPO18 9AY: not on the flood risk listPO18 9BA: not on the flood risk listPO18 9BB: not on the flood risk listPO18 9BD: not on the flood risk listPO18 9BE: not on the flood risk listPO18 9BG: not on the flood risk listPO18 9BH: not on the flood risk listPO18 9BJ: not on the flood risk listPO18 9BL: not on the flood risk listPO18 9BN: not on the flood risk listPO18 9BP: not on the flood risk listPO18 9BQ: not on the flood risk listPO18 9BS: not on the flood risk listPO18 9BT: not on the flood risk listPO18 9BU: not on the flood risk listPO18 9BX: not on the flood risk listPO18 9DA: not on the flood risk listPO18 9DD: not on the flood risk listPO18 9DH: not on the flood risk listPO18 9DJ: not on the flood risk listPO18 9DL: not on the flood risk listPO18 9DN: not on the flood risk listPO18 9DP: not on the flood risk listPO18 9DR: not on the flood risk listPO18 9DT: not on the flood risk listPO18 9DU: not on the flood risk listPO18 9DW: not on the flood risk listPO18 9DZ: not on the flood risk listPO18 9EB: not on the flood risk listPO18 9EF: not on the flood risk listPO18 9EH: not on the flood risk listPO18 9EJ: not on the flood risk listPO18 9EL: not on the flood risk listPO18 9EN: not on the flood risk listPO18 9EP: not on the flood risk listPO18 9EQ: not on the flood risk listPO18 9ES: not on the flood risk listPO18 9ET: not on the flood risk listPO18 9EU: not on the flood risk listPO18 9EW: not on the flood risk listPO18 9EX: not on the flood risk listPO18 9EY: not on the flood risk listPO18 9EZ: not on the flood risk listPO18 9HA: not on the flood risk listPO18 9HD: not on the flood risk listPO18 9HE: not on the flood risk listPO18 9HF: not on the flood risk listPO18 9HJ: not on the flood risk listPO18 9HL: not on the flood risk listPO18 9HN: not on the flood risk listPO18 9HR: not on the flood risk listPO18 9HS: not on the flood risk listPO18 9HT: not on the flood risk listPO18 9HU: not on the flood risk listPO18 9HX: not on the flood risk listPO18 9HY: not on the flood risk listPO18 9HZ: not on the flood risk listPO18 9JA: not on the flood risk listPO18 9JB: not on the flood risk listPO18 9JD: not on the flood risk listPO18 9JE: not on the flood risk listPO18 9JF: not on the flood risk listPO18 9JG: not on the flood risk listPO18 9JJ: not on the flood risk listPO18 9JN: not on the flood risk listPO18 9JP: not on the flood risk listPO18 9JR: not on the flood risk listPO18 9JS: not on the flood risk listPO18 9JT: not on the flood risk listPO18 9JU: not on the flood risk listPO18 9JX: not on the flood risk listPO18 9JY: not on the flood risk listPO18 9JZ: not on the flood risk listPO18 9LA: not on the flood risk listPO18 9LB: not on the flood risk listPO18 9LD: not on the flood risk listPO18 9LE: not on the flood risk listPO18 9LF: not on the flood risk listPO18 9LG: not on the flood risk listPO18 9LH: not on the flood risk listPO18 9LJ: not on the flood risk listPO18 9LN: not on the flood risk listPO18 9LP: not on the flood risk listPO18 9LR: not on the flood risk listPO18 9LS: not on the flood risk listPO18 9LT: not on the flood risk listPO18 9LX: not on the flood risk listPO18 9NA: not on the flood risk listPO18 9NB: not on the flood risk listPO18 9ND: not on the flood risk listPO18 9NE: not on the flood risk listPO18 9NF: not on the flood risk listPO18 9NH: not on the flood risk listPO18 9NJ: not on the flood risk listPO18 9NL: not on the flood risk listPO18 9NN: not on the flood risk listPO18 9NP: not on the flood risk listPO18 9NR: not on the flood risk listPO18 9NS: not on the flood risk listPO18 9NT: not on the flood risk listPO18 9NW: not on the flood risk listPO18 9PB: not on the flood risk listPO18 9PD: not on the flood risk listPO18 9QA: not on the flood risk listPO18 9QB: not on the flood risk listPO18 9QL: not on the flood risk listPO18 9EG: low flood risk at worstPO18 9JW: low flood risk at worstPO18 9ED: medium flood risk at worstPO18 9DX: high flood riskPO18 9EA: high flood riskPO18 9EE: high flood riskPO18 9HP: high flood riskPO18 9HW: high flood riskPO18 9JQ: high flood riskPO18 9JL: high flood risk Westbourne Map of every postcode in the PO18 9 sector, by flood risk Of the 140 postcodes in the PO18 9 sector that ONS places, 7 have a home or business at high risk, 1 are at medium risk at worst, 2 are at low risk at worst and 130 are not on the Environment Agency's at-risk list. Places named: Lavant, Westbourne. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A27 LavantWestbourne
  • A home or business at high risk: 7
  • At medium risk at worst: 1
  • At low risk at worst: 2
  • At very low risk only: 0
  • Not on the at-risk list: 130

Of the 140 postcodes in the PO18 9 sector that ONS places, 7 have a home or business at high risk, 1 are at medium risk at worst, 2 are at low risk at worst and 130 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. 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.

PO18 9EE6 at high riskPO18 9HP6 at high riskPO18 9EA3 at high riskPO18 9JQ2 at high riskPO18 9DX1 at high riskPO18 9HW1 at high riskPO18 9JL1 at high risk

What do homes sell for in PO18 9?

Homes in PO18 9 sold for a typical £850,000 in the 12 months to August 2026, across 9 sales, up 11.1% on the 12 months before, HM Land Registry's figures show.

£850,000 typical price, the 12 months to August 2026
£765,000 12 months to August 2025
▲ up 11.1% on the 12 months before
  • Detached £1,035,000 5 sales
  • Semi-detached 2 sales, too few to price
  • Terraced 2 sales, too few to price

Standard sales of homes at market value at the postcodes that start PO18 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 PO18 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.

PO18 9AAPO18 9ABPO18 9ADPO18 9AEPO18 9AFPO18 9AHPO18 9AJPO18 9ALPO18 9ANPO18 9APPO18 9ARPO18 9ASPO18 9ATPO18 9AUPO18 9AWPO18 9AXPO18 9AYPO18 9BAPO18 9BBPO18 9BDPO18 9BEPO18 9BGPO18 9BHPO18 9BJPO18 9BLPO18 9BNPO18 9BPPO18 9BQPO18 9BSPO18 9BTPO18 9BUPO18 9BXPO18 9DAPO18 9DBPO18 9DDPO18 9DHPO18 9DJPO18 9DLPO18 9DNPO18 9DPPO18 9DRPO18 9DSPO18 9DTPO18 9DUPO18 9DWPO18 9DXPO18 9DZPO18 9EAPO18 9EBPO18 9EDPO18 9EEPO18 9EFPO18 9EGPO18 9EHPO18 9EJPO18 9ELPO18 9ENPO18 9EPPO18 9EQPO18 9ESPO18 9ETPO18 9EUPO18 9EWPO18 9EXPO18 9EYPO18 9EZPO18 9HAPO18 9HBPO18 9HDPO18 9HEPO18 9HFPO18 9HJPO18 9HLPO18 9HNPO18 9HPPO18 9HRPO18 9HSPO18 9HTPO18 9HUPO18 9HWPO18 9HXPO18 9HYPO18 9HZPO18 9JAPO18 9JBPO18 9JDPO18 9JEPO18 9JFPO18 9JGPO18 9JHPO18 9JJPO18 9JLPO18 9JNPO18 9JPPO18 9JQPO18 9JRPO18 9JSPO18 9JTPO18 9JUPO18 9JWPO18 9JXPO18 9JYPO18 9JZPO18 9LAPO18 9LBPO18 9LDPO18 9LEPO18 9LFPO18 9LGPO18 9LHPO18 9LJPO18 9LLPO18 9LNPO18 9LPPO18 9LQPO18 9LRPO18 9LSPO18 9LTPO18 9LUPO18 9LWPO18 9LXPO18 9NAPO18 9NBPO18 9NDPO18 9NEPO18 9NFPO18 9NHPO18 9NJPO18 9NLPO18 9NNPO18 9NPPO18 9NRPO18 9NSPO18 9NTPO18 9NWPO18 9PBPO18 9PDPO18 9QAPO18 9QBPO18 9QL

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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