IP9 1 postcode sector in the IP9 district

IP9 1 is a sector of the IP9 district: every postcode that starts IP9 1. It has 191 postcodes in use, 3 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 IP9 1 sector, by flood risk

Map of every postcode in the IP9 1 sector, by flood risk Of the 191 postcodes in the IP9 1 sector that ONS places, 11 have a home or business at high risk, 2 are at medium risk at worst, 3 are at low risk at worst and 175 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 5 postcodes at high or medium risk. Places named: Holbrook. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. IP9 1AB: not on the flood risk listIP9 1AD: not on the flood risk listIP9 1AE: not on the flood risk listIP9 1AF: not on the flood risk listIP9 1AG: not on the flood risk listIP9 1AH: not on the flood risk listIP9 1AJ: not on the flood risk listIP9 1AL: not on the flood risk listIP9 1AN: not on the flood risk listIP9 1AQ: not on the flood risk listIP9 1AR: not on the flood risk listIP9 1AS: not on the flood risk listIP9 1AU: not on the flood risk listIP9 1AW: not on the flood risk listIP9 1AX: not on the flood risk listIP9 1AY: not on the flood risk listIP9 1AZ: not on the flood risk listIP9 1BA: not on the flood risk listIP9 1BB: not on the flood risk listIP9 1BD: not on the flood risk listIP9 1BE: not on the flood risk listIP9 1BF: not on the flood risk listIP9 1BG: not on the flood risk listIP9 1BH: not on the flood risk listIP9 1BJ: not on the flood risk listIP9 1BL: not on the flood risk listIP9 1BN: not on the flood risk listIP9 1BP: not on the flood risk listIP9 1BS: not on the flood risk listIP9 1BT: not on the flood risk listIP9 1BU: not on the flood risk listIP9 1BW: not on the flood risk listIP9 1BX: not on the flood risk listIP9 1BY: not on the flood risk listIP9 1BZ: not on the flood risk listIP9 1DA: not on the flood risk listIP9 1DB: not on the flood risk listIP9 1DD: not on the flood risk listIP9 1DE: not on the flood risk listIP9 1DF: not on the flood risk listIP9 1DG: not on the flood risk listIP9 1DN: not on the flood risk listIP9 1DP: not on the flood risk listIP9 1DQ: not on the flood risk listIP9 1DR: not on the flood risk listIP9 1DT: not on the flood risk listIP9 1DU: not on the flood risk listIP9 1DW: not on the flood risk listIP9 1DX: not on the flood risk listIP9 1DY: not on the flood risk listIP9 1DZ: not on the flood risk listIP9 1EA: not on the flood risk listIP9 1EB: not on the flood risk listIP9 1ED: not on the flood risk listIP9 1EE: not on the flood risk listIP9 1EF: not on the flood risk listIP9 1EG: not on the flood risk listIP9 1EH: not on the flood risk listIP9 1EJ: not on the flood risk listIP9 1EL: not on the flood risk listIP9 1EN: not on the flood risk listIP9 1EQ: not on the flood risk listIP9 1ER: not on the flood risk listIP9 1ES: not on the flood risk listIP9 1EW: not on the flood risk listIP9 1EX: not on the flood risk listIP9 1EY: not on the flood risk listIP9 1EZ: not on the flood risk listIP9 1FA: not on the flood risk listIP9 1FE: not on the flood risk listIP9 1FF: not on the flood risk listIP9 1FG: not on the flood risk listIP9 1FJ: not on the flood risk listIP9 1FL: not on the flood risk listIP9 1HA: not on the flood risk listIP9 1HB: not on the flood risk listIP9 1HD: not on the flood risk listIP9 1HH: not on the flood risk listIP9 1HJ: not on the flood risk listIP9 1HL: not on the flood risk listIP9 1HN: not on the flood risk listIP9 1HP: not on the flood risk listIP9 1HQ: not on the flood risk listIP9 1HR: not on the flood risk listIP9 1HS: not on the flood risk listIP9 1HT: not on the flood risk listIP9 1HW: not on the flood risk listIP9 1HX: not on the flood risk listIP9 1HY: not on the flood risk listIP9 1HZ: not on the flood risk listIP9 1JA: not on the flood risk listIP9 1JB: not on the flood risk listIP9 1JD: not on the flood risk listIP9 1JE: not on the flood risk listIP9 1JF: not on the flood risk listIP9 1JG: not on the flood risk listIP9 1JH: not on the flood risk listIP9 1JJ: not on the flood risk listIP9 1JL: not on the flood risk listIP9 1JN: not on the flood risk listIP9 1JU: not on the flood risk listIP9 1JY: not on the flood risk listIP9 1LD: not on the flood risk listIP9 1LE: not on the flood risk listIP9 1LF: not on the flood risk listIP9 1LG: not on the flood risk listIP9 1LH: not on the flood risk listIP9 1LJ: not on the flood risk listIP9 1LL: not on the flood risk listIP9 1LN: not on the flood risk listIP9 1LP: not on the flood risk listIP9 1LQ: not on the flood risk listIP9 1LR: not on the flood risk listIP9 1LW: not on the flood risk listIP9 1LX: not on the flood risk listIP9 1LZ: not on the flood risk listIP9 1NA: not on the flood risk listIP9 1NB: not on the flood risk listIP9 1ND: not on the flood risk listIP9 1NE: not on the flood risk listIP9 1NF: not on the flood risk listIP9 1NH: not on the flood risk listIP9 1NN: not on the flood risk listIP9 1NP: not on the flood risk listIP9 1NQ: not on the flood risk listIP9 1NR: not on the flood risk listIP9 1NS: not on the flood risk listIP9 1NT: not on the flood risk listIP9 1NU: not on the flood risk listIP9 1NW: not on the flood risk listIP9 1NX: not on the flood risk listIP9 1NY: not on the flood risk listIP9 1NZ: not on the flood risk listIP9 1PA: not on the flood risk listIP9 1PB: not on the flood risk listIP9 1PG: not on the flood risk listIP9 1PH: not on the flood risk listIP9 1PJ: not on the flood risk listIP9 1PL: not on the flood risk listIP9 1PN: not on the flood risk listIP9 1PP: not on the flood risk listIP9 1PQ: not on the flood risk listIP9 1PR: not on the flood risk listIP9 1PS: not on the flood risk listIP9 1PW: not on the flood risk listIP9 1PX: not on the flood risk listIP9 1PY: not on the flood risk listIP9 1PZ: not on the flood risk listIP9 1QA: not on the flood risk listIP9 1QB: not on the flood risk listIP9 1QD: not on the flood risk listIP9 1QE: not on the flood risk listIP9 1QF: not on the flood risk listIP9 1QH: not on the flood risk listIP9 1QN: not on the flood risk listIP9 1RJ: not on the flood risk listIP9 1RL: not on the flood risk listIP9 1RN: not on the flood risk listIP9 1RP: not on the flood risk listIP9 1RQ: not on the flood risk listIP9 1RR: not on the flood risk listIP9 1RS: not on the flood risk listIP9 1AA: low flood risk at worstIP9 1AT: low flood risk at worstIP9 1PU: low flood risk at worstIP9 1AP: medium flood risk at worstIP9 1EP: medium flood risk at worstIP9 1ET: high flood riskIP9 1FD: high flood riskIP9 1JP: high flood riskIP9 1JR: high flood riskIP9 1JS: high flood riskIP9 1JT: high flood riskIP9 1JW: high flood riskIP9 1JX: high flood riskIP9 1QJ: high flood riskIP9 1QR: high flood riskIP9 1QS: high flood risk Holbrook 5 postcodes at high or medium risk, outlined: this goes to IP9 1JW, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in the IP9 1 sector, by flood risk Of the 191 postcodes in the IP9 1 sector that ONS places, 11 have a home or business at high risk, 2 are at medium risk at worst, 3 are at low risk at worst and 175 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 5 postcodes at high or medium risk. Places named: Holbrook. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. Holbrook 5 postcodes at high or medium risk, outlined: this goes to IP9 1JW, the one with most homes and businesses at high risk5 postcodes at high or medium risk
  • A home or business at high risk: 11
  • At medium risk at worst: 2
  • At low risk at worst: 3
  • At very low risk only: 0
  • Not on the at-risk list: 175
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 191 postcodes in the IP9 1 sector that ONS places, 11 have a home or business at high risk, 2 are at medium risk at worst, 3 are at low risk at worst and 175 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 210 metres of each other. It is not a boundary, and 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.

IP9 1JW22 at high riskIP9 1QS15 at high riskIP9 1QR13 at high riskIP9 1FD9 at high riskIP9 1JP7 at high riskIP9 1JS7 at high riskIP9 1QJ5 at high riskIP9 1JR4 at high riskIP9 1ET2 at high riskIP9 1JX1 at high riskIP9 1JT1 at high risk

Where the postcodes at high or medium risk lie together

  • 5 postcodes at high or medium risk, outlined on the map. IP9 1JW, is the one with most homes and businesses at high risk.

What do homes sell for in IP9 1?

Homes in IP9 1 sold for a typical £280,000 in the 12 months to August 2026, across 49 sales, down 16.4% on the 12 months before, HM Land Registry's figures show.

£280,000 typical price, the 12 months to August 2026
£335,000 12 months to August 2025
▼ down 16.4% on the 12 months before
  • Detached £371,250 16 sales
  • Semi-detached £275,000 20 sales
  • Terraced £275,000 9 sales
  • Flat or maisonette 4 sales, 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 IP9 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 IP9 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.

IP9 1AAIP9 1ABIP9 1ADIP9 1AEIP9 1AFIP9 1AGIP9 1AHIP9 1AJIP9 1ALIP9 1ANIP9 1APIP9 1AQIP9 1ARIP9 1ASIP9 1ATIP9 1AUIP9 1AWIP9 1AXIP9 1AYIP9 1AZIP9 1BAIP9 1BBIP9 1BDIP9 1BEIP9 1BFIP9 1BGIP9 1BHIP9 1BJIP9 1BLIP9 1BNIP9 1BPIP9 1BSIP9 1BTIP9 1BUIP9 1BWIP9 1BXIP9 1BYIP9 1BZIP9 1DAIP9 1DBIP9 1DDIP9 1DEIP9 1DFIP9 1DGIP9 1DNIP9 1DPIP9 1DQIP9 1DRIP9 1DSIP9 1DTIP9 1DUIP9 1DWIP9 1DXIP9 1DYIP9 1DZIP9 1EAIP9 1EBIP9 1EDIP9 1EEIP9 1EFIP9 1EGIP9 1EHIP9 1EJIP9 1ELIP9 1ENIP9 1EPIP9 1EQIP9 1ERIP9 1ESIP9 1ETIP9 1EUIP9 1EWIP9 1EXIP9 1EYIP9 1EZIP9 1FAIP9 1FBIP9 1FDIP9 1FEIP9 1FFIP9 1FGIP9 1FJIP9 1FLIP9 1HAIP9 1HBIP9 1HDIP9 1HHIP9 1HJIP9 1HLIP9 1HNIP9 1HPIP9 1HQIP9 1HRIP9 1HSIP9 1HTIP9 1HUIP9 1HWIP9 1HXIP9 1HYIP9 1HZIP9 1JAIP9 1JBIP9 1JDIP9 1JEIP9 1JFIP9 1JGIP9 1JHIP9 1JJIP9 1JLIP9 1JNIP9 1JPIP9 1JQIP9 1JRIP9 1JSIP9 1JTIP9 1JUIP9 1JWIP9 1JXIP9 1JYIP9 1LDIP9 1LEIP9 1LFIP9 1LGIP9 1LHIP9 1LJIP9 1LLIP9 1LNIP9 1LPIP9 1LQIP9 1LRIP9 1LWIP9 1LXIP9 1LYIP9 1LZIP9 1NAIP9 1NBIP9 1NDIP9 1NEIP9 1NFIP9 1NGIP9 1NHIP9 1NJIP9 1NLIP9 1NNIP9 1NPIP9 1NQIP9 1NRIP9 1NSIP9 1NTIP9 1NUIP9 1NWIP9 1NXIP9 1NYIP9 1NZIP9 1PAIP9 1PBIP9 1PGIP9 1PHIP9 1PJIP9 1PLIP9 1PNIP9 1PPIP9 1PQIP9 1PRIP9 1PSIP9 1PUIP9 1PWIP9 1PXIP9 1PYIP9 1PZIP9 1QAIP9 1QBIP9 1QDIP9 1QEIP9 1QFIP9 1QGIP9 1QHIP9 1QJIP9 1QNIP9 1QPIP9 1QRIP9 1QSIP9 1RJIP9 1RLIP9 1RNIP9 1RPIP9 1RQIP9 1RRIP9 1RSIP9 1RTIP9 1RW

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.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.