S20 4 postcode sector in the S20 district

S20 4 is a sector of the S20 district: every postcode that starts S20 4. It has 82 postcodes in use.

Not sure what a sector is? UK postcode format explained.

Every postcode in the S20 4 sector, by flood risk

Map of every postcode in the S20 4 sector, by flood risk Of the 82 postcodes in the S20 4 sector that ONS places, 82 are not on the Environment Agency's at-risk list. Places named: Mosborough. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A6135 S20 4AA: not on the flood risk listS20 4AB: not on the flood risk listS20 4AD: not on the flood risk listS20 4AE: not on the flood risk listS20 4AF: not on the flood risk listS20 4AG: not on the flood risk listS20 4AH: not on the flood risk listS20 4GA: not on the flood risk listS20 4GB: not on the flood risk listS20 4GF: not on the flood risk listS20 4GG: not on the flood risk listS20 4GJ: not on the flood risk listS20 4GN: not on the flood risk listS20 4GQ: not on the flood risk listS20 4GX: not on the flood risk listS20 4HA: not on the flood risk listS20 4HB: not on the flood risk listS20 4HD: not on the flood risk listS20 4HE: not on the flood risk listS20 4HF: not on the flood risk listS20 4HG: not on the flood risk listS20 4HH: not on the flood risk listS20 4HL: not on the flood risk listS20 4HN: not on the flood risk listS20 4HP: not on the flood risk listS20 4HQ: not on the flood risk listS20 4HR: not on the flood risk listS20 4HS: not on the flood risk listS20 4HT: not on the flood risk listS20 4HU: not on the flood risk listS20 4HW: not on the flood risk listS20 4HX: not on the flood risk listS20 4HY: not on the flood risk listS20 4RW: not on the flood risk listS20 4RY: not on the flood risk listS20 4RZ: not on the flood risk listS20 4SA: not on the flood risk listS20 4SB: not on the flood risk listS20 4SD: not on the flood risk listS20 4SE: not on the flood risk listS20 4SF: not on the flood risk listS20 4SG: not on the flood risk listS20 4SH: not on the flood risk listS20 4SJ: not on the flood risk listS20 4SL: not on the flood risk listS20 4SN: not on the flood risk listS20 4SP: not on the flood risk listS20 4SQ: not on the flood risk listS20 4SR: not on the flood risk listS20 4SS: not on the flood risk listS20 4ST: not on the flood risk listS20 4SU: not on the flood risk listS20 4SW: not on the flood risk listS20 4SX: not on the flood risk listS20 4SY: not on the flood risk listS20 4SZ: not on the flood risk listS20 4TA: not on the flood risk listS20 4TB: not on the flood risk listS20 4TD: not on the flood risk listS20 4TE: not on the flood risk listS20 4TF: not on the flood risk listS20 4TG: not on the flood risk listS20 4TH: not on the flood risk listS20 4TJ: not on the flood risk listS20 4TL: not on the flood risk listS20 4TN: not on the flood risk listS20 4TP: not on the flood risk listS20 4TQ: not on the flood risk listS20 4TR: not on the flood risk listS20 4TS: not on the flood risk listS20 4TT: not on the flood risk listS20 4TU: not on the flood risk listS20 4TW: not on the flood risk listS20 4TX: not on the flood risk listS20 4TY: not on the flood risk listS20 4UA: not on the flood risk listS20 4UB: not on the flood risk listS20 4UD: not on the flood risk listS20 4XA: not on the flood risk listS20 4XB: not on the flood risk listS20 4XD: not on the flood risk listS20 4XE: not on the flood risk list Mosborough Map of every postcode in the S20 4 sector, by flood risk Of the 82 postcodes in the S20 4 sector that ONS places, 82 are not on the Environment Agency's at-risk list. Places named: Mosborough. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Mosborough
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 82

Of the 82 postcodes in the S20 4 sector that ONS places, 82 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. 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; 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

What do homes sell for in S20 4?

Homes in S20 4 sold for a typical £240,750 in the 12 months to August 2026, across 56 sales, up 12% on the 12 months before, HM Land Registry's figures show.

£240,750 typical price, the 12 months to August 2026
£215,000 12 months to August 2025
▲ up 12% on the 12 months before
  • Detached £287,500 17 sales
  • Semi-detached £247,250 17 sales
  • Terraced £180,000 21 sales
  • Flat or maisonette 1 sale, 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 S20 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 S20 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.

S20 4AAS20 4ABS20 4ADS20 4AES20 4AFS20 4AGS20 4AHS20 4GAS20 4GBS20 4GFS20 4GGS20 4GJS20 4GNS20 4GQS20 4GXS20 4HAS20 4HBS20 4HDS20 4HES20 4HFS20 4HGS20 4HHS20 4HLS20 4HNS20 4HPS20 4HQS20 4HRS20 4HSS20 4HTS20 4HUS20 4HWS20 4HXS20 4HYS20 4RWS20 4RYS20 4RZS20 4SAS20 4SBS20 4SDS20 4SES20 4SFS20 4SGS20 4SHS20 4SJS20 4SLS20 4SNS20 4SPS20 4SQS20 4SRS20 4SSS20 4STS20 4SUS20 4SWS20 4SXS20 4SYS20 4SZS20 4TAS20 4TBS20 4TDS20 4TES20 4TFS20 4TGS20 4THS20 4TJS20 4TLS20 4TNS20 4TPS20 4TQS20 4TRS20 4TSS20 4TTS20 4TUS20 4TWS20 4TXS20 4TYS20 4UAS20 4UBS20 4UDS20 4XAS20 4XBS20 4XDS20 4XE

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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