RG21 4 postcode sector in the RG21 district

RG21 4 is a sector of the RG21 district: every postcode that starts RG21 4. It has 115 postcodes in use, 11 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 RG21 4 sector, by flood risk

Map of every postcode in the RG21 4 sector, by flood risk Of the 115 postcodes in the RG21 4 sector that ONS places, 1 have a home or business at high risk and 114 are not on the Environment Agency's at-risk list. Places named: Basingstoke. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A339A3010A340 RG21 4AA: not on the flood risk listRG21 4AB: not on the flood risk listRG21 4AE: not on the flood risk listRG21 4AF: not on the flood risk listRG21 4AG: not on the flood risk listRG21 4AH: not on the flood risk listRG21 4AL: not on the flood risk listRG21 4AN: not on the flood risk listRG21 4AP: not on the flood risk listRG21 4AQ: not on the flood risk listRG21 4AR: not on the flood risk listRG21 4AS: not on the flood risk listRG21 4AT: not on the flood risk listRG21 4AU: not on the flood risk listRG21 4AW: not on the flood risk listRG21 4AX: not on the flood risk listRG21 4BB: not on the flood risk listRG21 4BF: not on the flood risk listRG21 4BG: not on the flood risk listRG21 4BJ: not on the flood risk listRG21 4BN: not on the flood risk listRG21 4BP: not on the flood risk listRG21 4BQ: not on the flood risk listRG21 4BS: not on the flood risk listRG21 4BT: not on the flood risk listRG21 4BU: not on the flood risk listRG21 4BW: not on the flood risk listRG21 4BX: not on the flood risk listRG21 4BY: not on the flood risk listRG21 4BZ: not on the flood risk listRG21 4DA: not on the flood risk listRG21 4DB: not on the flood risk listRG21 4DD: not on the flood risk listRG21 4DE: not on the flood risk listRG21 4DF: not on the flood risk listRG21 4DG: not on the flood risk listRG21 4DH: not on the flood risk listRG21 4DJ: not on the flood risk listRG21 4DL: not on the flood risk listRG21 4DN: not on the flood risk listRG21 4DP: not on the flood risk listRG21 4DQ: not on the flood risk listRG21 4DR: not on the flood risk listRG21 4DS: not on the flood risk listRG21 4DT: not on the flood risk listRG21 4DU: not on the flood risk listRG21 4DW: not on the flood risk listRG21 4DX: not on the flood risk listRG21 4DZ: not on the flood risk listRG21 4EB: not on the flood risk listRG21 4EQ: not on the flood risk listRG21 4ER: not on the flood risk listRG21 4ET: not on the flood risk listRG21 4EY: not on the flood risk listRG21 4EZ: not on the flood risk listRG21 4FA: not on the flood risk listRG21 4FB: not on the flood risk listRG21 4FF: not on the flood risk listRG21 4FL: not on the flood risk listRG21 4FP: not on the flood risk listRG21 4FQ: not on the flood risk listRG21 4FR: not on the flood risk listRG21 4FS: not on the flood risk listRG21 4HA: not on the flood risk listRG21 4HD: not on the flood risk listRG21 4HE: not on the flood risk listRG21 4HF: not on the flood risk listRG21 4HG: not on the flood risk listRG21 4HL: not on the flood risk listRG21 4HP: not on the flood risk listRG21 4HU: not on the flood risk listRG21 4HX: not on the flood risk listRG21 4HY: not on the flood risk listRG21 4JB: not on the flood risk listRG21 4JF: not on the flood risk listRG21 4JH: not on the flood risk listRG21 4JN: not on the flood risk listRG21 4JP: not on the flood risk listRG21 4JX: not on the flood risk listRG21 4LB: not on the flood risk listRG21 4NA: not on the flood risk listRG21 4NX: not on the flood risk listRG21 4NY: not on the flood risk listRG21 4NZ: not on the flood risk listRG21 4PA: not on the flood risk listRG21 4PB: not on the flood risk listRG21 4PD: not on the flood risk listRG21 4PE: not on the flood risk listRG21 4PF: not on the flood risk listRG21 4PG: not on the flood risk listRG21 4PH: not on the flood risk listRG21 4PJ: not on the flood risk listRG21 4PL: not on the flood risk listRG21 4PN: not on the flood risk listRG21 4PP: not on the flood risk listRG21 4PQ: not on the flood risk listRG21 4PR: not on the flood risk listRG21 4PS: not on the flood risk listRG21 4PT: not on the flood risk listRG21 4PU: not on the flood risk listRG21 4PW: not on the flood risk listRG21 4PX: not on the flood risk listRG21 4PY: not on the flood risk listRG21 4PZ: not on the flood risk listRG21 4QB: not on the flood risk listRG21 4QD: not on the flood risk listRG21 4QE: not on the flood risk listRG21 4RG: not on the flood risk listRG21 4RN: not on the flood risk listRG21 4RW: not on the flood risk listRG21 4UJ: not on the flood risk listRG21 4YY: not on the flood risk listRG21 4QA: high flood risk Basingstoke Map of every postcode in the RG21 4 sector, by flood risk Of the 115 postcodes in the RG21 4 sector that ONS places, 1 have a home or business at high risk and 114 are not on the Environment Agency's at-risk list. Places named: Basingstoke. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A3010A340 Basingstoke
  • A home or business at high risk: 1
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 114

Of the 115 postcodes in the RG21 4 sector that ONS places, 1 have a home or business at high risk and 114 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.

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.

RG21 4QA1 at high risk

What do homes sell for in RG21 4?

Homes in RG21 4 sold for a typical £277,500 in the 12 months to August 2026, across 35 sales, down 7.5% on the 12 months before, HM Land Registry's figures show.

£277,500 typical price, the 12 months to August 2026
£299,950 12 months to August 2025
▼ down 7.5% on the 12 months before
  • Detached 2 sales, too few to price
  • Semi-detached 1 sale, too few to price
  • Terraced £293,250 22 sales
  • Flat or maisonette £185,000 10 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 RG21 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 RG21 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.

RG21 4AARG21 4ABRG21 4AERG21 4AFRG21 4AGRG21 4AHRG21 4AJRG21 4ALRG21 4ANRG21 4APRG21 4AQRG21 4ARRG21 4ASRG21 4ATRG21 4AURG21 4AWRG21 4AXRG21 4BBRG21 4BFRG21 4BGRG21 4BJRG21 4BNRG21 4BPRG21 4BQRG21 4BSRG21 4BTRG21 4BURG21 4BWRG21 4BXRG21 4BYRG21 4BZRG21 4DARG21 4DBRG21 4DDRG21 4DERG21 4DFRG21 4DGRG21 4DHRG21 4DJRG21 4DLRG21 4DNRG21 4DPRG21 4DQRG21 4DRRG21 4DSRG21 4DTRG21 4DURG21 4DWRG21 4DXRG21 4DZRG21 4EBRG21 4EQRG21 4ERRG21 4ETRG21 4EYRG21 4EZRG21 4FARG21 4FBRG21 4FFRG21 4FLRG21 4FPRG21 4FQRG21 4FRRG21 4FSRG21 4HARG21 4HDRG21 4HERG21 4HFRG21 4HGRG21 4HLRG21 4HPRG21 4HURG21 4HXRG21 4HYRG21 4JBRG21 4JFRG21 4JHRG21 4JNRG21 4JPRG21 4JXRG21 4LBRG21 4NARG21 4NXRG21 4NYRG21 4NZRG21 4PARG21 4PBRG21 4PDRG21 4PERG21 4PFRG21 4PGRG21 4PHRG21 4PJRG21 4PLRG21 4PNRG21 4PPRG21 4PQRG21 4PRRG21 4PSRG21 4PTRG21 4PURG21 4PWRG21 4PXRG21 4PYRG21 4PZRG21 4QARG21 4QBRG21 4QDRG21 4QERG21 4RGRG21 4RNRG21 4RWRG21 4UJRG21 4UYRG21 4YY

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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