IP21 4 postcode sector in the IP21 district

IP21 4 is a sector of the IP21 district: every postcode that starts IP21 4. It has 276 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 IP21 4 sector, by gigabit broadband

Map of every postcode in the IP21 4 sector, by gigabit broadband Of the 276 postcodes in the IP21 4 sector that ONS places, 84 have no home or business that can get gigabit, 48 have some that can, 142 can all get it and 2 have no Ofcom figure. 2 groups of postcodes without gigabit are outlined: 12 postcodes without gigabit; 8 postcodes without gigabit. Places named: Diss. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A140A1066 IP21 4GN: no Ofcom figureIP21 4AN: gigabit for allIP21 4BD: gigabit for allIP21 4BE: gigabit for allIP21 4BJ: gigabit for allIP21 4BN: gigabit for allIP21 4BP: gigabit for allIP21 4BQ: gigabit for allIP21 4BS: gigabit for allIP21 4BU: gigabit for allIP21 4BX: gigabit for allIP21 4BY: gigabit for allIP21 4BZ: gigabit for allIP21 4DB: gigabit for allIP21 4DF: gigabit for allIP21 4DQ: gigabit for allIP21 4DS: gigabit for allIP21 4DU: gigabit for allIP21 4DW: gigabit for allIP21 4DX: gigabit for allIP21 4EA: gigabit for allIP21 4EB: gigabit for allIP21 4EJ: gigabit for allIP21 4EL: gigabit for allIP21 4EN: gigabit for allIP21 4EP: gigabit for allIP21 4EQ: gigabit for allIP21 4ER: gigabit for allIP21 4ES: gigabit for allIP21 4ET: gigabit for allIP21 4EY: gigabit for allIP21 4EZ: gigabit for allIP21 4FE: gigabit for allIP21 4FF: gigabit for allIP21 4FG: gigabit for allIP21 4FZ: gigabit for allIP21 4GA: gigabit for allIP21 4HB: gigabit for allIP21 4HD: gigabit for allIP21 4HG: gigabit for allIP21 4HH: gigabit for allIP21 4HJ: gigabit for allIP21 4HN: gigabit for allIP21 4HP: gigabit for allIP21 4HR: gigabit for allIP21 4HY: gigabit for allIP21 4HZ: gigabit for allIP21 4JW: gigabit for allIP21 4LY: gigabit for allIP21 4NA: gigabit for allIP21 4NB: gigabit for allIP21 4ND: gigabit for allIP21 4NG: gigabit for allIP21 4NH: gigabit for allIP21 4NP: gigabit for allIP21 4NR: gigabit for allIP21 4NU: gigabit for allIP21 4NW: gigabit for allIP21 4NX: gigabit for allIP21 4PB: gigabit for allIP21 4PE: gigabit for allIP21 4PP: gigabit for allIP21 4PR: gigabit for allIP21 4PX: gigabit for allIP21 4PY: gigabit for allIP21 4QB: gigabit for allIP21 4QD: gigabit for allIP21 4QE: gigabit for allIP21 4QL: gigabit for allIP21 4QN: gigabit for allIP21 4QU: gigabit for allIP21 4QW: gigabit for allIP21 4QX: gigabit for allIP21 4QY: gigabit for allIP21 4QZ: gigabit for allIP21 4RB: gigabit for allIP21 4RD: gigabit for allIP21 4RF: gigabit for allIP21 4RH: gigabit for allIP21 4RJ: gigabit for allIP21 4RL: gigabit for allIP21 4RN: gigabit for allIP21 4RP: gigabit for allIP21 4RQ: gigabit for allIP21 4RR: gigabit for allIP21 4RU: gigabit for allIP21 4RW: gigabit for allIP21 4RX: gigabit for allIP21 4RZ: gigabit for allIP21 4SH: gigabit for allIP21 4SS: gigabit for allIP21 4SX: gigabit for allIP21 4SY: gigabit for allIP21 4SZ: gigabit for allIP21 4TA: gigabit for allIP21 4TB: gigabit for allIP21 4TD: gigabit for allIP21 4TH: gigabit for allIP21 4TJ: gigabit for allIP21 4TN: gigabit for allIP21 4TP: gigabit for allIP21 4TQ: gigabit for allIP21 4TR: gigabit for allIP21 4TS: gigabit for allIP21 4UA: gigabit for allIP21 4UB: gigabit for allIP21 4UD: gigabit for allIP21 4UF: gigabit for allIP21 4UH: gigabit for allIP21 4UJ: gigabit for allIP21 4UL: gigabit for allIP21 4UU: gigabit for allIP21 4WZ: gigabit for allIP21 4XD: gigabit for allIP21 4XH: gigabit for allIP21 4XN: gigabit for allIP21 4XQ: gigabit for allIP21 4XR: gigabit for allIP21 4XS: gigabit for allIP21 4XT: gigabit for allIP21 4XW: gigabit for allIP21 4XY: gigabit for allIP21 4XZ: gigabit for allIP21 4YA: gigabit for allIP21 4YB: gigabit for allIP21 4YD: gigabit for allIP21 4YF: gigabit for allIP21 4YG: gigabit for allIP21 4YH: gigabit for allIP21 4YL: gigabit for allIP21 4AJ: some gigabitIP21 4BL: some gigabitIP21 4DH: some gigabitIP21 4DJ: some gigabitIP21 4DL: some gigabitIP21 4DR: some gigabitIP21 4DT: some gigabitIP21 4DY: some gigabitIP21 4DZ: some gigabitIP21 4ED: some gigabitIP21 4EW: some gigabitIP21 4HL: some gigabitIP21 4HX: some gigabitIP21 4JP: some gigabitIP21 4JT: some gigabitIP21 4JY: some gigabitIP21 4NJ: some gigabitIP21 4NL: some gigabitIP21 4NN: some gigabitIP21 4NQ: some gigabitIP21 4NS: some gigabitIP21 4NY: some gigabitIP21 4PD: some gigabitIP21 4PJ: some gigabitIP21 4QA: some gigabitIP21 4QF: some gigabitIP21 4QP: some gigabitIP21 4QQ: some gigabitIP21 4QR: some gigabitIP21 4QS: some gigabitIP21 4QT: some gigabitIP21 4RG: some gigabitIP21 4RT: some gigabitIP21 4SL: some gigabitIP21 4SP: some gigabitIP21 4TE: some gigabitIP21 4TL: some gigabitIP21 4UE: some gigabitIP21 4XG: some gigabitIP21 4XJ: some gigabitIP21 4XU: some gigabitIP21 4XX: some gigabitIP21 4DN: some gigabitIP21 4TG: some gigabitIP21 4AA: no gigabitIP21 4AB: no gigabitIP21 4AD: no gigabitIP21 4AE: no gigabitIP21 4AF: no gigabitIP21 4AG: no gigabitIP21 4AH: no gigabitIP21 4AL: no gigabitIP21 4AP: no gigabitIP21 4AR: no gigabitIP21 4AS: no gigabitIP21 4AT: no gigabitIP21 4AU: no gigabitIP21 4AW: no gigabitIP21 4AX: no gigabitIP21 4AY: no gigabitIP21 4AZ: no gigabitIP21 4BB: no gigabitIP21 4BH: no gigabitIP21 4BT: no gigabitIP21 4BW: no gigabitIP21 4EE: no gigabitIP21 4EF: no gigabitIP21 4EG: no gigabitIP21 4FA: no gigabitIP21 4FB: no gigabitIP21 4FD: no gigabitIP21 4FH: no gigabitIP21 4HS: no gigabitIP21 4HT: no gigabitIP21 4HU: no gigabitIP21 4HW: no gigabitIP21 4JA: no gigabitIP21 4JB: no gigabitIP21 4JD: no gigabitIP21 4JE: no gigabitIP21 4JG: no gigabitIP21 4JH: no gigabitIP21 4JR: no gigabitIP21 4JS: no gigabitIP21 4JU: no gigabitIP21 4JX: no gigabitIP21 4LA: no gigabitIP21 4LB: no gigabitIP21 4LD: no gigabitIP21 4LL: no gigabitIP21 4LN: no gigabitIP21 4LP: no gigabitIP21 4LQ: no gigabitIP21 4LR: no gigabitIP21 4LS: no gigabitIP21 4LT: no gigabitIP21 4LU: no gigabitIP21 4LW: no gigabitIP21 4LX: no gigabitIP21 4LZ: no gigabitIP21 4NE: no gigabitIP21 4NT: no gigabitIP21 4PF: no gigabitIP21 4PG: no gigabitIP21 4PH: no gigabitIP21 4PL: no gigabitIP21 4PQ: no gigabitIP21 4PS: no gigabitIP21 4PT: no gigabitIP21 4QG: no gigabitIP21 4QH: no gigabitIP21 4QJ: no gigabitIP21 4SN: no gigabitIP21 4TF: no gigabitIP21 4XA: no gigabitIP21 4XB: no gigabitIP21 4XE: no gigabitIP21 4XF: no gigabitIP21 4XL: no gigabitIP21 4XP: no gigabitIP21 4YJ: no gigabitIP21 4AQ: no gigabitIP21 4EH: no gigabitIP21 4LH: no gigabitIP21 4PA: no gigabit Diss 12 postcodes without gigabit, outlined: this goes to IP21 4LD, the one nearest the middle of them12 postcodes without gigabit8 postcodes without gigabit, outlined: this goes to IP21 4AE, the one nearest the middle of them8 postcodes without gigabit Map of every postcode in the IP21 4 sector, by gigabit broadband Of the 276 postcodes in the IP21 4 sector that ONS places, 84 have no home or business that can get gigabit, 48 have some that can, 142 can all get it and 2 have no Ofcom figure. 2 groups of postcodes without gigabit are outlined: 12 postcodes without gigabit; 8 postcodes without gigabit. Places named: Diss. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. Diss
  • No home or business can get gigabit: 84
  • Some can get gigabit: 48
  • Every home and business can get gigabit: 142
  • Ofcom gives no figure: 2
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 276 postcodes in the IP21 4 sector that ONS places, 84 have no home or business that can get gigabit, 48 have some that can, 142 can all get it and 2 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 420 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.

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Ofcom Connected Nations, Connected Nations, Spring 2026; roads, rivers and built-up areas: Ordnance Survey open maps. 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.

Postcodes without gigabit

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

IP21 4AAIP21 4ABIP21 4ADIP21 4AEIP21 4AFIP21 4AGIP21 4AHIP21 4ALIP21 4APIP21 4AQIP21 4ARIP21 4AS

Where the postcodes without gigabit lie together

  • 12 postcodes without gigabit, outlined on the map. IP21 4LD, is the one nearest the middle of them.
  • 8 postcodes without gigabit, outlined on the map. IP21 4AE, is the one nearest the middle of them.

What do homes sell for in IP21 4?

Homes in IP21 4 sold for a typical £290,000 in the 12 months to September 2026, across 83 sales, HM Land Registry's figures show. The 12 months before gave £292,500 from 80 sales: not a change larger than chance would explain, given which homes happened to sell.

£290,000 typical price, the 12 months to September 2026
£292,500 12 months to September 2025
  • Detached £416,000 45 sales
  • Semi-detached £260,000 29 sales
  • Terraced £225,000 7 sales
  • Flat or maisonette 2 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 IP21 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 October 2026.

Postcodes in IP21 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.

IP21 4AAIP21 4ABIP21 4ADIP21 4AEIP21 4AFIP21 4AGIP21 4AHIP21 4AJIP21 4ALIP21 4ANIP21 4APIP21 4AQIP21 4ARIP21 4ASIP21 4ATIP21 4AUIP21 4AWIP21 4AXIP21 4AYIP21 4AZIP21 4BBIP21 4BDIP21 4BEIP21 4BFIP21 4BHIP21 4BJIP21 4BLIP21 4BNIP21 4BPIP21 4BQIP21 4BSIP21 4BTIP21 4BUIP21 4BWIP21 4BXIP21 4BYIP21 4BZIP21 4DBIP21 4DDIP21 4DFIP21 4DGIP21 4DHIP21 4DJIP21 4DLIP21 4DNIP21 4DPIP21 4DQIP21 4DRIP21 4DSIP21 4DTIP21 4DUIP21 4DWIP21 4DXIP21 4DYIP21 4DZIP21 4EAIP21 4EBIP21 4EDIP21 4EEIP21 4EFIP21 4EGIP21 4EHIP21 4EJIP21 4ELIP21 4ENIP21 4EPIP21 4EQIP21 4ERIP21 4ESIP21 4ETIP21 4EWIP21 4EXIP21 4EYIP21 4EZIP21 4FAIP21 4FBIP21 4FDIP21 4FEIP21 4FFIP21 4FGIP21 4FHIP21 4FZIP21 4GAIP21 4GNIP21 4HBIP21 4HDIP21 4HEIP21 4HGIP21 4HHIP21 4HJIP21 4HLIP21 4HNIP21 4HPIP21 4HRIP21 4HSIP21 4HTIP21 4HUIP21 4HWIP21 4HXIP21 4HYIP21 4HZIP21 4JAIP21 4JBIP21 4JDIP21 4JEIP21 4JGIP21 4JHIP21 4JJIP21 4JLIP21 4JPIP21 4JRIP21 4JSIP21 4JTIP21 4JUIP21 4JWIP21 4JXIP21 4JYIP21 4JZIP21 4LAIP21 4LBIP21 4LDIP21 4LHIP21 4LLIP21 4LNIP21 4LPIP21 4LQIP21 4LRIP21 4LSIP21 4LTIP21 4LUIP21 4LWIP21 4LXIP21 4LYIP21 4LZIP21 4NAIP21 4NBIP21 4NDIP21 4NEIP21 4NGIP21 4NHIP21 4NJIP21 4NLIP21 4NNIP21 4NPIP21 4NQIP21 4NRIP21 4NSIP21 4NTIP21 4NUIP21 4NWIP21 4NXIP21 4NYIP21 4NZIP21 4PAIP21 4PBIP21 4PDIP21 4PEIP21 4PFIP21 4PGIP21 4PHIP21 4PJIP21 4PLIP21 4PPIP21 4PQIP21 4PRIP21 4PSIP21 4PTIP21 4PWIP21 4PXIP21 4PYIP21 4QAIP21 4QBIP21 4QDIP21 4QEIP21 4QFIP21 4QGIP21 4QHIP21 4QJIP21 4QLIP21 4QNIP21 4QPIP21 4QQIP21 4QRIP21 4QSIP21 4QTIP21 4QUIP21 4QWIP21 4QXIP21 4QYIP21 4QZIP21 4RAIP21 4RBIP21 4RDIP21 4REIP21 4RFIP21 4RGIP21 4RHIP21 4RJIP21 4RLIP21 4RNIP21 4RPIP21 4RQIP21 4RRIP21 4RTIP21 4RUIP21 4RWIP21 4RXIP21 4RZIP21 4SHIP21 4SJIP21 4SLIP21 4SNIP21 4SPIP21 4SQIP21 4SRIP21 4SSIP21 4SUIP21 4SWIP21 4SXIP21 4SYIP21 4SZIP21 4TAIP21 4TBIP21 4TDIP21 4TEIP21 4TFIP21 4TGIP21 4THIP21 4TJIP21 4TLIP21 4TNIP21 4TPIP21 4TQIP21 4TRIP21 4TSIP21 4TXIP21 4UAIP21 4UBIP21 4UDIP21 4UEIP21 4UFIP21 4UHIP21 4UJIP21 4ULIP21 4UUIP21 4WQIP21 4WZIP21 4XAIP21 4XBIP21 4XDIP21 4XEIP21 4XFIP21 4XGIP21 4XHIP21 4XJIP21 4XLIP21 4XNIP21 4XPIP21 4XQIP21 4XRIP21 4XSIP21 4XTIP21 4XUIP21 4XWIP21 4XXIP21 4XYIP21 4XZIP21 4YAIP21 4YBIP21 4YDIP21 4YEIP21 4YFIP21 4YGIP21 4YHIP21 4YJIP21 4YL

Source: ONS Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed.

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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Where the facts on this page come from

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.

Licence: Open Government Licence v3.0.

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