IP4 1 postcode sector in the IP4 district

IP4 1 is a sector of the IP4 district: every postcode that starts IP4 1. It has 142 postcodes in use, 5 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 IP4 1 sector, by gigabit broadband

Map of every postcode in the IP4 1 sector, by gigabit broadband Of the 142 postcodes in the IP4 1 sector that ONS places, 21 have no home or business that can get gigabit, 44 have some that can, 72 can all get it and 5 have no Ofcom figure. One group of postcodes without gigabit is outlined: 18 postcodes without gigabit. Places named: Ipswich. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. IP4 1BJ: no Ofcom figureIP4 1FX: no Ofcom figureIP4 1JR: no Ofcom figureIP4 1AS: gigabit for allIP4 1BF: gigabit for allIP4 1BY: gigabit for allIP4 1BZ: gigabit for allIP4 1DJ: gigabit for allIP4 1DS: gigabit for allIP4 1DW: gigabit for allIP4 1DY: gigabit for allIP4 1FA: gigabit for allIP4 1FF: gigabit for allIP4 1FG: gigabit for allIP4 1FH: gigabit for allIP4 1FP: gigabit for allIP4 1FU: gigabit for allIP4 1FW: gigabit for allIP4 1FZ: gigabit for allIP4 1GA: gigabit for allIP4 1GY: gigabit for allIP4 1HJ: gigabit for allIP4 1HS: gigabit for allIP4 1HU: gigabit for allIP4 1HW: gigabit for allIP4 1HY: gigabit for allIP4 1JD: gigabit for allIP4 1JF: gigabit for allIP4 1JG: gigabit for allIP4 1JX: gigabit for allIP4 1LB: gigabit for allIP4 1LE: gigabit for allIP4 1LG: gigabit for allIP4 1LN: gigabit for allIP4 1LQ: gigabit for allIP4 1LR: gigabit for allIP4 1LS: gigabit for allIP4 1LW: gigabit for allIP4 1NB: gigabit for allIP4 1ND: gigabit for allIP4 1NE: gigabit for allIP4 1NF: gigabit for allIP4 1NG: gigabit for allIP4 1NL: gigabit for allIP4 1NN: gigabit for allIP4 1NP: gigabit for allIP4 1NR: gigabit for allIP4 1NS: gigabit for allIP4 1NT: gigabit for allIP4 1NW: gigabit for allIP4 1NX: gigabit for allIP4 1NY: gigabit for allIP4 1NZ: gigabit for allIP4 1PA: gigabit for allIP4 1PB: gigabit for allIP4 1PD: gigabit for allIP4 1PE: gigabit for allIP4 1PG: gigabit for allIP4 1PH: gigabit for allIP4 1PJ: gigabit for allIP4 1PL: gigabit for allIP4 1PN: gigabit for allIP4 1PP: gigabit for allIP4 1PR: gigabit for allIP4 1PS: gigabit for allIP4 1PT: gigabit for allIP4 1PU: gigabit for allIP4 1QB: gigabit for allIP4 1QD: gigabit for allIP4 1QE: gigabit for allIP4 1QF: gigabit for allIP4 1QH: gigabit for allIP4 1QJ: gigabit for allIP4 1AD: some gigabitIP4 1AL: some gigabitIP4 1AP: some gigabitIP4 1AQ: some gigabitIP4 1AR: some gigabitIP4 1AU: some gigabitIP4 1AX: some gigabitIP4 1AY: some gigabitIP4 1BA: some gigabitIP4 1BB: some gigabitIP4 1BD: some gigabitIP4 1BN: some gigabitIP4 1BQ: some gigabitIP4 1BS: some gigabitIP4 1DL: some gigabitIP4 1DT: some gigabitIP4 1DU: some gigabitIP4 1ED: some gigabitIP4 1EE: some gigabitIP4 1EG: some gigabitIP4 1EJ: some gigabitIP4 1ER: some gigabitIP4 1HB: some gigabitIP4 1HE: some gigabitIP4 1HH: some gigabitIP4 1HN: some gigabitIP4 1HP: some gigabitIP4 1HQ: some gigabitIP4 1HR: some gigabitIP4 1HT: some gigabitIP4 1JA: some gigabitIP4 1JB: some gigabitIP4 1JE: some gigabitIP4 1JH: some gigabitIP4 1JL: some gigabitIP4 1JN: some gigabitIP4 1JS: some gigabitIP4 1JU: some gigabitIP4 1JW: some gigabitIP4 1JY: some gigabitIP4 1JZ: some gigabitIP4 1LP: some gigabitIP4 1LT: some gigabitIP4 1NA: some gigabitIP4 1AE: no gigabitIP4 1AG: no gigabitIP4 1BE: no gigabitIP4 1BP: no gigabitIP4 1BU: no gigabitIP4 1BW: no gigabitIP4 1BX: no gigabitIP4 1DQ: no gigabitIP4 1DR: no gigabitIP4 1DX: no gigabitIP4 1EB: no gigabitIP4 1EN: no gigabitIP4 1EW: no gigabitIP4 1GB: no gigabitIP4 1GF: no gigabitIP4 1HA: no gigabitIP4 1HD: no gigabitIP4 1JP: no gigabitIP4 1JQ: no gigabitIP4 1RA: no gigabitIP4 1FY: no gigabit Ipswich 18 postcodes without gigabit, outlined: this goes to IP4 1BW, the one nearest the middle of them18 postcodes without gigabit Map of every postcode in the IP4 1 sector, by gigabit broadband Of the 142 postcodes in the IP4 1 sector that ONS places, 21 have no home or business that can get gigabit, 44 have some that can, 72 can all get it and 5 have no Ofcom figure. One group of postcodes without gigabit is outlined: 18 postcodes without gigabit. Places named: Ipswich. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Ipswich
  • No home or business can get gigabit: 21
  • Some can get gigabit: 44
  • Every home and business can get gigabit: 72
  • Ofcom gives no figure: 5
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 142 postcodes in the IP4 1 sector that ONS places, 21 have no home or business that can get gigabit, 44 have some that can, 72 can all get it and 5 have no Ofcom figure.

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 150 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; gigabit: Ofcom, Connected Nations, Spring 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

Postcodes without gigabit

21 postcodes here have no gigabit. These are the 12 first in postcode order.

IP4 1AEIP4 1AGIP4 1BEIP4 1BPIP4 1BUIP4 1BWIP4 1BXIP4 1DQIP4 1DRIP4 1DXIP4 1EBIP4 1EN

Where the postcodes without gigabit lie together

  • 18 postcodes without gigabit, outlined on the map. IP4 1BW, is the one nearest the middle of them.

What do homes sell for in IP4 1?

Homes in IP4 1 sold for a typical £227,500 in the 12 months to August 2026, across 35 sales, up 4.5% on the 12 months before, HM Land Registry's figures show.

£227,500 typical price, the 12 months to August 2026
£217,750 12 months to August 2025
▲ up 4.5% on the 12 months before
  • Detached 1 sale, too few to price
  • Semi-detached £230,000 11 sales
  • Terraced £230,000 15 sales
  • Flat or maisonette £143,750 8 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 IP4 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 IP4 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.

IP4 1ADIP4 1AEIP4 1AGIP4 1ALIP4 1APIP4 1AQIP4 1ARIP4 1ASIP4 1AUIP4 1AXIP4 1AYIP4 1BAIP4 1BBIP4 1BDIP4 1BEIP4 1BFIP4 1BJIP4 1BNIP4 1BPIP4 1BQIP4 1BSIP4 1BUIP4 1BWIP4 1BXIP4 1BYIP4 1BZIP4 1DJIP4 1DLIP4 1DQIP4 1DRIP4 1DSIP4 1DTIP4 1DUIP4 1DWIP4 1DXIP4 1DYIP4 1EBIP4 1EDIP4 1EEIP4 1EFIP4 1EGIP4 1EJIP4 1ENIP4 1ERIP4 1EWIP4 1FAIP4 1FFIP4 1FGIP4 1FHIP4 1FLIP4 1FPIP4 1FTIP4 1FUIP4 1FWIP4 1FXIP4 1FYIP4 1FZIP4 1GAIP4 1GBIP4 1GFIP4 1GYIP4 1HAIP4 1HBIP4 1HDIP4 1HEIP4 1HHIP4 1HJIP4 1HNIP4 1HPIP4 1HQIP4 1HRIP4 1HSIP4 1HTIP4 1HUIP4 1HWIP4 1HYIP4 1JAIP4 1JBIP4 1JDIP4 1JEIP4 1JFIP4 1JGIP4 1JHIP4 1JLIP4 1JNIP4 1JPIP4 1JQIP4 1JRIP4 1JSIP4 1JUIP4 1JWIP4 1JXIP4 1JYIP4 1JZIP4 1LBIP4 1LEIP4 1LGIP4 1LNIP4 1LPIP4 1LQIP4 1LRIP4 1LSIP4 1LTIP4 1LWIP4 1NAIP4 1NBIP4 1NDIP4 1NEIP4 1NFIP4 1NGIP4 1NLIP4 1NNIP4 1NPIP4 1NRIP4 1NSIP4 1NTIP4 1NWIP4 1NXIP4 1NYIP4 1NZIP4 1PAIP4 1PBIP4 1PDIP4 1PEIP4 1PGIP4 1PHIP4 1PJIP4 1PLIP4 1PNIP4 1PPIP4 1PRIP4 1PSIP4 1PTIP4 1PUIP4 1QBIP4 1QDIP4 1QEIP4 1QFIP4 1QHIP4 1QJIP4 1RAIP4 1WB

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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