IP1 4 postcode sector in the IP1 district

IP1 4 is a sector of the IP1 district: every postcode that starts IP1 4. It has 158 postcodes in use, 4 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 IP1 4 sector, and which are new since 2020

Map of every postcode in the IP1 4 sector, by new since 2020 Of the 158 postcodes in the IP1 4 sector that ONS places, 2 are new since 2020 and 156 were in use before 2020. 2 postcodes lie beyond the edge and are listed under the map. Places named: Westgate, Castle Hill. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A1214 IP1 4AA: before 2020IP1 4AB: before 2020IP1 4AD: before 2020IP1 4AE: before 2020IP1 4AF: before 2020IP1 4AG: before 2020IP1 4AH: before 2020IP1 4AL: before 2020IP1 4AN: before 2020IP1 4AP: before 2020IP1 4AQ: before 2020IP1 4AR: before 2020IP1 4AS: before 2020IP1 4AT: before 2020IP1 4AU: before 2020IP1 4AW: before 2020IP1 4AX: before 2020IP1 4AY: before 2020IP1 4AZ: before 2020IP1 4BA: before 2020IP1 4BB: before 2020IP1 4BD: before 2020IP1 4BE: before 2020IP1 4BF: before 2020IP1 4BG: before 2020IP1 4BH: before 2020IP1 4BJ: before 2020IP1 4BN: before 2020IP1 4BP: before 2020IP1 4BQ: before 2020IP1 4BS: before 2020IP1 4BT: before 2020IP1 4BU: before 2020IP1 4BW: before 2020IP1 4BX: before 2020IP1 4BY: before 2020IP1 4BZ: before 2020IP1 4DA: before 2020IP1 4DB: before 2020IP1 4DD: before 2020IP1 4DE: before 2020IP1 4DF: before 2020IP1 4DG: before 2020IP1 4DH: before 2020IP1 4DJ: before 2020IP1 4DL: before 2020IP1 4DN: before 2020IP1 4DP: before 2020IP1 4DQ: before 2020IP1 4DR: before 2020IP1 4DS: before 2020IP1 4DT: before 2020IP1 4DW: before 2020IP1 4DX: before 2020IP1 4EA: before 2020IP1 4EB: before 2020IP1 4ED: before 2020IP1 4EE: before 2020IP1 4EF: before 2020IP1 4EG: before 2020IP1 4EH: before 2020IP1 4EJ: before 2020IP1 4EL: before 2020IP1 4EN: before 2020IP1 4EP: before 2020IP1 4EQ: before 2020IP1 4ER: before 2020IP1 4ES: before 2020IP1 4ET: before 2020IP1 4EU: before 2020IP1 4EW: before 2020IP1 4EX: before 2020IP1 4EY: before 2020IP1 4FB: before 2020IP1 4FD: before 2020IP1 4FE: before 2020IP1 4FF: before 2020IP1 4HA: before 2020IP1 4HB: before 2020IP1 4HD: before 2020IP1 4HE: before 2020IP1 4HG: before 2020IP1 4HH: before 2020IP1 4HJ: before 2020IP1 4HL: before 2020IP1 4HN: before 2020IP1 4HP: before 2020IP1 4HQ: before 2020IP1 4HR: before 2020IP1 4HS: before 2020IP1 4HT: before 2020IP1 4HU: before 2020IP1 4HW: before 2020IP1 4HX: before 2020IP1 4HY: before 2020IP1 4HZ: before 2020IP1 4JD: before 2020IP1 4JE: before 2020IP1 4JF: before 2020IP1 4JG: before 2020IP1 4JJ: before 2020IP1 4JP: before 2020IP1 4JQ: before 2020IP1 4JR: before 2020IP1 4JX: before 2020IP1 4JY: before 2020IP1 4JZ: before 2020IP1 4LA: before 2020IP1 4LB: before 2020IP1 4LD: before 2020IP1 4LE: before 2020IP1 4LH: before 2020IP1 4LJ: before 2020IP1 4LL: before 2020IP1 4LN: before 2020IP1 4LP: before 2020IP1 4LR: before 2020IP1 4LS: before 2020IP1 4LT: before 2020IP1 4LU: before 2020IP1 4LW: before 2020IP1 4LX: before 2020IP1 4LY: before 2020IP1 4NE: before 2020IP1 4NF: before 2020IP1 4NG: before 2020IP1 4NH: before 2020IP1 4NJ: before 2020IP1 4NL: before 2020IP1 4NN: before 2020IP1 4NP: before 2020IP1 4NQ: before 2020IP1 4NR: before 2020IP1 4NS: before 2020IP1 4NT: before 2020IP1 4NU: before 2020IP1 4NW: before 2020IP1 4NX: before 2020IP1 4NZ: before 2020IP1 4PA: before 2020IP1 4PB: before 2020IP1 4PD: before 2020IP1 4PE: before 2020IP1 4PF: before 2020IP1 4PG: before 2020IP1 4PH: before 2020IP1 4PJ: before 2020IP1 4PP: before 2020IP1 4PQ: before 2020IP1 4QA: before 2020IP1 4QB: before 2020IP1 4QD: before 2020IP1 4QE: before 2020IP1 4QF: before 2020IP1 4QG: before 2020IP1 4PR: new since 2020 WestgateCastle Hill Map of every postcode in the IP1 4 sector, by new since 2020 Of the 158 postcodes in the IP1 4 sector that ONS places, 2 are new since 2020 and 156 were in use before 2020. 2 postcodes lie beyond the edge and are listed under the map. Places named: Westgate, Castle Hill. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A1214 WestgateCastle Hill
  • New since 2020: 2
  • In use before 2020: 156

Of the 158 postcodes in the IP1 4 sector that ONS places, 2 are new since 2020 and 156 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. 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; when each came into use: the same directory; 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 2 newest postcodes

IP1 4FRJuly 2026IP1 4PRApril 2026

2 further out, not drawn

These postcodes lie well apart from the rest, so the map is drawn without them to show the rest closer; they are in every count.

IP1 4FRIP1 4PY

What do homes sell for in IP1 4?

Homes in IP1 4 sold for a typical £236,500 in the 12 months to August 2026, across 90 sales, down 3% on the 12 months before, HM Land Registry's figures show.

£236,500 typical price, the 12 months to August 2026
£243,750 12 months to August 2025
▼ down 3% on the 12 months before
  • Detached £450,000 17 sales
  • Semi-detached £258,000 37 sales
  • Terraced £190,000 33 sales
  • Flat or maisonette 3 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 IP1 4. 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 IP1 4

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.

IP1 4AAIP1 4ABIP1 4ADIP1 4AEIP1 4AFIP1 4AGIP1 4AHIP1 4ALIP1 4ANIP1 4APIP1 4AQIP1 4ARIP1 4ASIP1 4ATIP1 4AUIP1 4AWIP1 4AXIP1 4AYIP1 4AZIP1 4BAIP1 4BBIP1 4BDIP1 4BEIP1 4BFIP1 4BGIP1 4BHIP1 4BJIP1 4BNIP1 4BPIP1 4BQIP1 4BSIP1 4BTIP1 4BUIP1 4BWIP1 4BXIP1 4BYIP1 4BZIP1 4DAIP1 4DBIP1 4DDIP1 4DEIP1 4DFIP1 4DGIP1 4DHIP1 4DJIP1 4DLIP1 4DNIP1 4DPIP1 4DQIP1 4DRIP1 4DSIP1 4DTIP1 4DWIP1 4DXIP1 4EAIP1 4EBIP1 4EDIP1 4EEIP1 4EFIP1 4EGIP1 4EHIP1 4EJIP1 4ELIP1 4ENIP1 4EPIP1 4EQIP1 4ERIP1 4ESIP1 4ETIP1 4EUIP1 4EWIP1 4EXIP1 4EYIP1 4FBIP1 4FDIP1 4FEIP1 4FFIP1 4FRIP1 4HAIP1 4HBIP1 4HDIP1 4HEIP1 4HGIP1 4HHIP1 4HJIP1 4HLIP1 4HNIP1 4HPIP1 4HQIP1 4HRIP1 4HSIP1 4HTIP1 4HUIP1 4HWIP1 4HXIP1 4HYIP1 4HZIP1 4JDIP1 4JEIP1 4JFIP1 4JGIP1 4JJIP1 4JPIP1 4JQIP1 4JRIP1 4JXIP1 4JYIP1 4JZIP1 4LAIP1 4LBIP1 4LDIP1 4LEIP1 4LHIP1 4LJIP1 4LLIP1 4LNIP1 4LPIP1 4LRIP1 4LSIP1 4LTIP1 4LUIP1 4LWIP1 4LXIP1 4LYIP1 4NEIP1 4NFIP1 4NGIP1 4NHIP1 4NJIP1 4NLIP1 4NNIP1 4NPIP1 4NQIP1 4NRIP1 4NSIP1 4NTIP1 4NUIP1 4NWIP1 4NXIP1 4NZIP1 4PAIP1 4PBIP1 4PDIP1 4PEIP1 4PFIP1 4PGIP1 4PHIP1 4PJIP1 4PPIP1 4PQIP1 4PRIP1 4PYIP1 4QAIP1 4QBIP1 4QDIP1 4QEIP1 4QFIP1 4QG

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.