RG18 3 postcode sector in the RG18 district

RG18 3 is a sector of the RG18 district: every postcode that starts RG18 3. It has 146 postcodes in use, 6 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 RG18 3 sector, and which are new since 2020

Map of every postcode in the RG18 3 sector, by new since 2020 Of the 146 postcodes in the RG18 3 sector that ONS places, 2 are new since 2020 and 144 were in use before 2020. Places named: Thatcham West, Thatcham North East. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. RG18 3AA: before 2020RG18 3AB: before 2020RG18 3AD: before 2020RG18 3AE: before 2020RG18 3AF: before 2020RG18 3AG: before 2020RG18 3AH: before 2020RG18 3AJ: before 2020RG18 3AL: before 2020RG18 3AN: before 2020RG18 3AP: before 2020RG18 3AQ: before 2020RG18 3AR: before 2020RG18 3AS: before 2020RG18 3AT: before 2020RG18 3AU: before 2020RG18 3AW: before 2020RG18 3AX: before 2020RG18 3AY: before 2020RG18 3AZ: before 2020RG18 3BA: before 2020RG18 3BB: before 2020RG18 3BD: before 2020RG18 3BF: before 2020RG18 3BH: before 2020RG18 3BJ: before 2020RG18 3BL: before 2020RG18 3BN: before 2020RG18 3BP: before 2020RG18 3BQ: before 2020RG18 3BS: before 2020RG18 3BT: before 2020RG18 3BU: before 2020RG18 3BW: before 2020RG18 3BX: before 2020RG18 3BY: before 2020RG18 3BZ: before 2020RG18 3DA: before 2020RG18 3DB: before 2020RG18 3DD: before 2020RG18 3DE: before 2020RG18 3DF: before 2020RG18 3DG: before 2020RG18 3DH: before 2020RG18 3DJ: before 2020RG18 3DL: before 2020RG18 3DN: before 2020RG18 3DP: before 2020RG18 3DQ: before 2020RG18 3DR: before 2020RG18 3DS: before 2020RG18 3DT: before 2020RG18 3DU: before 2020RG18 3DW: before 2020RG18 3DX: before 2020RG18 3DY: before 2020RG18 3DZ: before 2020RG18 3EA: before 2020RG18 3EB: before 2020RG18 3ED: before 2020RG18 3EE: before 2020RG18 3EF: before 2020RG18 3EG: before 2020RG18 3EH: before 2020RG18 3EJ: before 2020RG18 3EL: before 2020RG18 3EN: before 2020RG18 3EP: before 2020RG18 3EQ: before 2020RG18 3ER: before 2020RG18 3ES: before 2020RG18 3ET: before 2020RG18 3EU: before 2020RG18 3EW: before 2020RG18 3EX: before 2020RG18 3EY: before 2020RG18 3EZ: before 2020RG18 3FA: before 2020RG18 3FB: before 2020RG18 3FD: before 2020RG18 3FE: before 2020RG18 3FF: before 2020RG18 3FG: before 2020RG18 3FH: before 2020RG18 3FJ: before 2020RG18 3FL: before 2020RG18 3FN: before 2020RG18 3FP: before 2020RG18 3FQ: before 2020RG18 3FR: before 2020RG18 3FS: before 2020RG18 3FT: before 2020RG18 3FU: before 2020RG18 3FW: before 2020RG18 3FX: before 2020RG18 3FY: before 2020RG18 3FZ: before 2020RG18 3GA: before 2020RG18 3GB: before 2020RG18 3GD: before 2020RG18 3GE: before 2020RG18 3GF: before 2020RG18 3GG: before 2020RG18 3GH: before 2020RG18 3GJ: before 2020RG18 3GL: before 2020RG18 3GN: before 2020RG18 3GP: before 2020RG18 3GQ: before 2020RG18 3GR: before 2020RG18 3GS: before 2020RG18 3GT: before 2020RG18 3GW: before 2020RG18 3HA: before 2020RG18 3HB: before 2020RG18 3HD: before 2020RG18 3HF: before 2020RG18 3HG: before 2020RG18 3HH: before 2020RG18 3HJ: before 2020RG18 3HL: before 2020RG18 3HP: before 2020RG18 3HR: before 2020RG18 3JN: before 2020RG18 3JW: before 2020RG18 3LF: before 2020RG18 3LG: before 2020RG18 3NH: before 2020RG18 3NJ: before 2020RG18 3PD: before 2020RG18 3PG: before 2020RG18 3PJ: before 2020RG18 3QY: before 2020RG18 3QZ: before 2020RG18 3RP: before 2020RG18 3ST: before 2020RG18 3SU: before 2020RG18 3SX: before 2020RG18 3TA: before 2020RG18 3UE: before 2020RG18 3UF: before 2020RG18 3UG: before 2020RG18 3UH: before 2020RG18 3UQ: before 2020RG18 3GU: new since 2020RG18 3GX: new since 2020 Thatcham WestThatcham North East Map of every postcode in the RG18 3 sector, by new since 2020 Of the 146 postcodes in the RG18 3 sector that ONS places, 2 are new since 2020 and 144 were in use before 2020. Places named: Thatcham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Thatcham
  • New since 2020: 2
  • In use before 2020: 144

Of the 146 postcodes in the RG18 3 sector that ONS places, 2 are new since 2020 and 144 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. 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

RG18 3GXNovember 2025RG18 3GUJanuary 2020

What do homes sell for in RG18 3?

Homes in RG18 3 sold for a typical £375,000 in the 12 months to August 2026, across 81 sales, up 3.7% on the 12 months before, HM Land Registry's figures show.

£375,000 typical price, the 12 months to August 2026
£361,500 12 months to August 2025
▲ up 3.7% on the 12 months before
  • Detached £475,375 20 sales
  • Semi-detached £382,500 33 sales
  • Terraced £314,000 20 sales
  • Flat or maisonette £215,000 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 RG18 3. 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 RG18 3

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.

RG18 3AARG18 3ABRG18 3ADRG18 3AERG18 3AFRG18 3AGRG18 3AHRG18 3AJRG18 3ALRG18 3ANRG18 3APRG18 3AQRG18 3ARRG18 3ASRG18 3ATRG18 3AURG18 3AWRG18 3AXRG18 3AYRG18 3AZRG18 3BARG18 3BBRG18 3BDRG18 3BFRG18 3BHRG18 3BJRG18 3BLRG18 3BNRG18 3BPRG18 3BQRG18 3BSRG18 3BTRG18 3BURG18 3BWRG18 3BXRG18 3BYRG18 3BZRG18 3DARG18 3DBRG18 3DDRG18 3DERG18 3DFRG18 3DGRG18 3DHRG18 3DJRG18 3DLRG18 3DNRG18 3DPRG18 3DQRG18 3DRRG18 3DSRG18 3DTRG18 3DURG18 3DWRG18 3DXRG18 3DYRG18 3DZRG18 3EARG18 3EBRG18 3EDRG18 3EERG18 3EFRG18 3EGRG18 3EHRG18 3EJRG18 3ELRG18 3ENRG18 3EPRG18 3EQRG18 3ERRG18 3ESRG18 3ETRG18 3EURG18 3EWRG18 3EXRG18 3EYRG18 3EZRG18 3FARG18 3FBRG18 3FDRG18 3FERG18 3FFRG18 3FGRG18 3FHRG18 3FJRG18 3FLRG18 3FNRG18 3FPRG18 3FQRG18 3FRRG18 3FSRG18 3FTRG18 3FURG18 3FWRG18 3FXRG18 3FYRG18 3FZRG18 3GARG18 3GBRG18 3GDRG18 3GERG18 3GFRG18 3GGRG18 3GHRG18 3GJRG18 3GLRG18 3GNRG18 3GPRG18 3GQRG18 3GRRG18 3GSRG18 3GTRG18 3GURG18 3GWRG18 3GXRG18 3HARG18 3HBRG18 3HDRG18 3HFRG18 3HGRG18 3HHRG18 3HJRG18 3HLRG18 3HPRG18 3HRRG18 3JNRG18 3JWRG18 3LFRG18 3LGRG18 3NHRG18 3NJRG18 3PDRG18 3PGRG18 3PJRG18 3QYRG18 3QZRG18 3RPRG18 3STRG18 3SURG18 3SXRG18 3TARG18 3UERG18 3UFRG18 3UGRG18 3UHRG18 3UQ

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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