SL7 3 postcode sector in the SL7 district

SL7 3 is a sector of the SL7 district: every postcode that starts SL7 3. It has 220 postcodes in use, 2 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 SL7 3 sector, and which are new since 2020

Map of every postcode in the SL7 3 sector, by new since 2020 Of the 220 postcodes in the SL7 3 sector that ONS places, 4 are new since 2020 and 216 were in use before 2020. Places named: Marlow, Marlow Bottom. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. M40A404 SL7 3AA: before 2020SL7 3AB: before 2020SL7 3AD: before 2020SL7 3AE: before 2020SL7 3AF: before 2020SL7 3AG: before 2020SL7 3AH: before 2020SL7 3AJ: before 2020SL7 3AL: before 2020SL7 3AN: before 2020SL7 3AP: before 2020SL7 3AQ: before 2020SL7 3AR: before 2020SL7 3AS: before 2020SL7 3AT: before 2020SL7 3AU: before 2020SL7 3AW: before 2020SL7 3AX: before 2020SL7 3AY: before 2020SL7 3AZ: before 2020SL7 3BA: before 2020SL7 3BB: before 2020SL7 3BD: before 2020SL7 3BE: before 2020SL7 3BF: before 2020SL7 3BH: before 2020SL7 3BJ: before 2020SL7 3BL: before 2020SL7 3BN: before 2020SL7 3BQ: before 2020SL7 3BT: before 2020SL7 3BU: before 2020SL7 3BW: before 2020SL7 3BX: before 2020SL7 3BY: before 2020SL7 3BZ: before 2020SL7 3DA: before 2020SL7 3DB: before 2020SL7 3DD: before 2020SL7 3DE: before 2020SL7 3DF: before 2020SL7 3DG: before 2020SL7 3DH: before 2020SL7 3DJ: before 2020SL7 3DL: before 2020SL7 3DN: before 2020SL7 3DP: before 2020SL7 3DQ: before 2020SL7 3DT: before 2020SL7 3DU: before 2020SL7 3DW: before 2020SL7 3DX: before 2020SL7 3EA: before 2020SL7 3EB: before 2020SL7 3ED: before 2020SL7 3EE: before 2020SL7 3EF: before 2020SL7 3EG: before 2020SL7 3EH: before 2020SL7 3EJ: before 2020SL7 3EL: before 2020SL7 3EN: before 2020SL7 3EP: before 2020SL7 3EQ: before 2020SL7 3ER: before 2020SL7 3ES: before 2020SL7 3ET: before 2020SL7 3EU: before 2020SL7 3EW: before 2020SL7 3EX: before 2020SL7 3EY: before 2020SL7 3EZ: before 2020SL7 3FG: before 2020SL7 3FH: before 2020SL7 3FJ: before 2020SL7 3GZ: before 2020SL7 3HA: before 2020SL7 3HB: before 2020SL7 3HF: before 2020SL7 3HH: before 2020SL7 3HJ: before 2020SL7 3HN: before 2020SL7 3HP: before 2020SL7 3HR: before 2020SL7 3HS: before 2020SL7 3HT: before 2020SL7 3HU: before 2020SL7 3HW: before 2020SL7 3HX: before 2020SL7 3HY: before 2020SL7 3HZ: before 2020SL7 3JA: before 2020SL7 3JB: before 2020SL7 3JD: before 2020SL7 3JE: before 2020SL7 3JF: before 2020SL7 3JG: before 2020SL7 3JP: before 2020SL7 3JQ: before 2020SL7 3JR: before 2020SL7 3JT: before 2020SL7 3JU: before 2020SL7 3JX: before 2020SL7 3JY: before 2020SL7 3JZ: before 2020SL7 3LA: before 2020SL7 3LB: before 2020SL7 3LD: before 2020SL7 3LE: before 2020SL7 3LF: before 2020SL7 3LG: before 2020SL7 3LH: before 2020SL7 3LJ: before 2020SL7 3LL: before 2020SL7 3LN: before 2020SL7 3LQ: before 2020SL7 3LT: before 2020SL7 3LU: before 2020SL7 3LW: before 2020SL7 3LX: before 2020SL7 3LY: before 2020SL7 3LZ: before 2020SL7 3NA: before 2020SL7 3NB: before 2020SL7 3ND: before 2020SL7 3NE: before 2020SL7 3NF: before 2020SL7 3NG: before 2020SL7 3NH: before 2020SL7 3NJ: before 2020SL7 3NL: before 2020SL7 3NN: before 2020SL7 3NQ: before 2020SL7 3NR: before 2020SL7 3NS: before 2020SL7 3NT: before 2020SL7 3NU: before 2020SL7 3NW: before 2020SL7 3NX: before 2020SL7 3NY: before 2020SL7 3NZ: before 2020SL7 3PA: before 2020SL7 3PB: before 2020SL7 3PD: before 2020SL7 3PE: before 2020SL7 3PF: before 2020SL7 3PG: before 2020SL7 3PH: before 2020SL7 3PJ: before 2020SL7 3PL: before 2020SL7 3PN: before 2020SL7 3PP: before 2020SL7 3PQ: before 2020SL7 3PR: before 2020SL7 3PS: before 2020SL7 3PT: before 2020SL7 3PU: before 2020SL7 3PW: before 2020SL7 3PX: before 2020SL7 3PY: before 2020SL7 3PZ: before 2020SL7 3QA: before 2020SL7 3QB: before 2020SL7 3QD: before 2020SL7 3QE: before 2020SL7 3QF: before 2020SL7 3QG: before 2020SL7 3QH: before 2020SL7 3QJ: before 2020SL7 3QL: before 2020SL7 3QN: before 2020SL7 3QP: before 2020SL7 3QQ: before 2020SL7 3QR: before 2020SL7 3QT: before 2020SL7 3QU: before 2020SL7 3QW: before 2020SL7 3QY: before 2020SL7 3RA: before 2020SL7 3RB: before 2020SL7 3RD: before 2020SL7 3RE: before 2020SL7 3RF: before 2020SL7 3RG: before 2020SL7 3RH: before 2020SL7 3RJ: before 2020SL7 3RL: before 2020SL7 3RN: before 2020SL7 3RP: before 2020SL7 3RQ: before 2020SL7 3RR: before 2020SL7 3RS: before 2020SL7 3RT: before 2020SL7 3RU: before 2020SL7 3RW: before 2020SL7 3RX: before 2020SL7 3RY: before 2020SL7 3RZ: before 2020SL7 3SA: before 2020SL7 3SB: before 2020SL7 3SD: before 2020SL7 3SE: before 2020SL7 3SF: before 2020SL7 3SG: before 2020SL7 3SL: before 2020SL7 3SR: before 2020SL7 3SY: before 2020SL7 3TB: before 2020SL7 3TZ: before 2020SL7 3XA: before 2020SL7 3XB: before 2020SL7 3XD: before 2020SL7 3YA: before 2020SL7 3FL: new since 2020SL7 3FN: new since 2020SL7 3FP: new since 2020SL7 3FQ: new since 2020 MarlowMarlow Bottom Map of every postcode in the SL7 3 sector, by new since 2020 Of the 220 postcodes in the SL7 3 sector that ONS places, 4 are new since 2020 and 216 were in use before 2020. Places named: Marlow, Marlow Bottom. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. MarlowMarlow Bottom
  • New since 2020: 4
  • In use before 2020: 216

Of the 220 postcodes in the SL7 3 sector that ONS places, 4 are new since 2020 and 216 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.

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 4 newest postcodes

SL7 3FLSeptember 2024SL7 3FNSeptember 2024SL7 3FPMay 2024SL7 3FQJuly 2023

What do homes sell for in SL7 3?

Homes in SL7 3 sold for a typical £700,000 in the 12 months to August 2026, across 71 sales, up 3.7% on the 12 months before, HM Land Registry's figures show.

£700,000 typical price, the 12 months to August 2026
£675,000 12 months to August 2025
▲ up 3.7% on the 12 months before
  • Detached £850,000 32 sales
  • Semi-detached £607,500 18 sales
  • Terraced £588,000 12 sales
  • Flat or maisonette £250,000 9 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 SL7 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 SL7 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.

SL7 3AASL7 3ABSL7 3ADSL7 3AESL7 3AFSL7 3AGSL7 3AHSL7 3AJSL7 3ALSL7 3ANSL7 3APSL7 3AQSL7 3ARSL7 3ASSL7 3ATSL7 3AUSL7 3AWSL7 3AXSL7 3AYSL7 3AZSL7 3BASL7 3BBSL7 3BDSL7 3BESL7 3BFSL7 3BGSL7 3BHSL7 3BJSL7 3BLSL7 3BNSL7 3BQSL7 3BTSL7 3BUSL7 3BWSL7 3BXSL7 3BYSL7 3BZSL7 3DASL7 3DBSL7 3DDSL7 3DESL7 3DFSL7 3DGSL7 3DHSL7 3DJSL7 3DLSL7 3DNSL7 3DPSL7 3DQSL7 3DTSL7 3DUSL7 3DWSL7 3DXSL7 3EASL7 3EBSL7 3EDSL7 3EESL7 3EFSL7 3EGSL7 3EHSL7 3EJSL7 3ELSL7 3ENSL7 3EPSL7 3EQSL7 3ERSL7 3ESSL7 3ETSL7 3EUSL7 3EWSL7 3EXSL7 3EYSL7 3EZSL7 3FGSL7 3FHSL7 3FJSL7 3FLSL7 3FNSL7 3FPSL7 3FQSL7 3GZSL7 3HASL7 3HBSL7 3HFSL7 3HHSL7 3HJSL7 3HLSL7 3HNSL7 3HPSL7 3HRSL7 3HSSL7 3HTSL7 3HUSL7 3HWSL7 3HXSL7 3HYSL7 3HZSL7 3JASL7 3JBSL7 3JDSL7 3JESL7 3JFSL7 3JGSL7 3JHSL7 3JPSL7 3JQSL7 3JRSL7 3JTSL7 3JUSL7 3JXSL7 3JYSL7 3JZSL7 3LASL7 3LBSL7 3LDSL7 3LESL7 3LFSL7 3LGSL7 3LHSL7 3LJSL7 3LLSL7 3LNSL7 3LQSL7 3LTSL7 3LUSL7 3LWSL7 3LXSL7 3LYSL7 3LZSL7 3NASL7 3NBSL7 3NDSL7 3NESL7 3NFSL7 3NGSL7 3NHSL7 3NJSL7 3NLSL7 3NNSL7 3NQSL7 3NRSL7 3NSSL7 3NTSL7 3NUSL7 3NWSL7 3NXSL7 3NYSL7 3NZSL7 3PASL7 3PBSL7 3PDSL7 3PESL7 3PFSL7 3PGSL7 3PHSL7 3PJSL7 3PLSL7 3PNSL7 3PPSL7 3PQSL7 3PRSL7 3PSSL7 3PTSL7 3PUSL7 3PWSL7 3PXSL7 3PYSL7 3PZSL7 3QASL7 3QBSL7 3QDSL7 3QESL7 3QFSL7 3QGSL7 3QHSL7 3QJSL7 3QLSL7 3QNSL7 3QPSL7 3QQSL7 3QRSL7 3QTSL7 3QUSL7 3QWSL7 3QYSL7 3RASL7 3RBSL7 3RDSL7 3RESL7 3RFSL7 3RGSL7 3RHSL7 3RJSL7 3RLSL7 3RNSL7 3RPSL7 3RQSL7 3RRSL7 3RSSL7 3RTSL7 3RUSL7 3RWSL7 3RXSL7 3RYSL7 3RZSL7 3SASL7 3SBSL7 3SDSL7 3SESL7 3SFSL7 3SGSL7 3SLSL7 3SRSL7 3SYSL7 3TBSL7 3TZSL7 3XASL7 3XBSL7 3XDSL7 3YA

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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