SM5 4 postcode sector in the SM5 district

SM5 4 is a sector of the SM5 district: every postcode that starts SM5 4. It has 123 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 SM5 4 sector, by gigabit broadband

Map of every postcode in the SM5 4 sector, by gigabit broadband Of the 123 postcodes in the SM5 4 sector that ONS places, 18 have no home or business that can get gigabit, 13 have some that can, 91 can all get it and 1 have no Ofcom figure. One postcode lies beyond the edge and is listed under the map. Places named: Carshalton South & Clockhouse, Wallington South. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A2022 SM5 4AA: gigabit for allSM5 4AB: gigabit for allSM5 4AD: gigabit for allSM5 4AE: gigabit for allSM5 4AG: gigabit for allSM5 4AS: gigabit for allSM5 4AT: gigabit for allSM5 4BB: gigabit for allSM5 4BF: gigabit for allSM5 4BG: gigabit for allSM5 4DP: gigabit for allSM5 4DW: gigabit for allSM5 4EF: gigabit for allSM5 4EG: gigabit for allSM5 4EH: gigabit for allSM5 4EJ: gigabit for allSM5 4EL: gigabit for allSM5 4EN: gigabit for allSM5 4ES: gigabit for allSM5 4EW: gigabit for allSM5 4HA: gigabit for allSM5 4HB: gigabit for allSM5 4HD: gigabit for allSM5 4HE: gigabit for allSM5 4HL: gigabit for allSM5 4HP: gigabit for allSM5 4HQ: gigabit for allSM5 4HR: gigabit for allSM5 4HS: gigabit for allSM5 4HW: gigabit for allSM5 4HZ: gigabit for allSM5 4JA: gigabit for allSM5 4JF: gigabit for allSM5 4JH: gigabit for allSM5 4JL: gigabit for allSM5 4JN: gigabit for allSM5 4JS: gigabit for allSM5 4JT: gigabit for allSM5 4JU: gigabit for allSM5 4JW: gigabit for allSM5 4JX: gigabit for allSM5 4LA: gigabit for allSM5 4LB: gigabit for allSM5 4LD: gigabit for allSM5 4LE: gigabit for allSM5 4LF: gigabit for allSM5 4LG: gigabit for allSM5 4LH: gigabit for allSM5 4LL: gigabit for allSM5 4LP: gigabit for allSM5 4LQ: gigabit for allSM5 4LR: gigabit for allSM5 4LS: gigabit for allSM5 4LT: gigabit for allSM5 4LU: gigabit for allSM5 4LW: gigabit for allSM5 4LX: gigabit for allSM5 4LY: gigabit for allSM5 4LZ: gigabit for allSM5 4NA: gigabit for allSM5 4NB: gigabit for allSM5 4NH: gigabit for allSM5 4NJ: gigabit for allSM5 4NL: gigabit for allSM5 4NP: gigabit for allSM5 4NX: gigabit for allSM5 4NY: gigabit for allSM5 4NZ: gigabit for allSM5 4PA: gigabit for allSM5 4PB: gigabit for allSM5 4PD: gigabit for allSM5 4PE: gigabit for allSM5 4PF: gigabit for allSM5 4PG: gigabit for allSM5 4PH: gigabit for allSM5 4PL: gigabit for allSM5 4PP: gigabit for allSM5 4PQ: gigabit for allSM5 4PR: gigabit for allSM5 4PS: gigabit for allSM5 4PT: gigabit for allSM5 4PU: gigabit for allSM5 4PW: gigabit for allSM5 4PX: gigabit for allSM5 4PY: gigabit for allSM5 4QB: gigabit for allSM5 4QE: gigabit for allSM5 4QH: gigabit for allSM5 4QJ: gigabit for allSM5 4QL: gigabit for allSM5 4QQ: gigabit for allSM5 4AF: some gigabitSM5 4AW: some gigabitSM5 4AY: some gigabitSM5 4BD: some gigabitSM5 4EQ: some gigabitSM5 4HN: some gigabitSM5 4HT: some gigabitSM5 4JJ: some gigabitSM5 4LJ: some gigabitSM5 4LN: some gigabitSM5 4NG: some gigabitSM5 4NQ: some gigabitSM5 4PN: some gigabitSM5 4AL: no gigabitSM5 4AN: no gigabitSM5 4AP: no gigabitSM5 4AQ: no gigabitSM5 4AU: no gigabitSM5 4AZ: no gigabitSM5 4BE: no gigabitSM5 4BJ: no gigabitSM5 4BP: no gigabitSM5 4BX: no gigabitSM5 4BY: no gigabitSM5 4DD: no gigabitSM5 4DH: no gigabitSM5 4DQ: no gigabitSM5 4DT: no gigabitSM5 4EA: no gigabitSM5 4NR: no gigabitSM5 4NS: no gigabit Carshalton South & ClockhouseWallington South Map of every postcode in the SM5 4 sector, by gigabit broadband Of the 123 postcodes in the SM5 4 sector that ONS places, 18 have no home or business that can get gigabit, 13 have some that can, 91 can all get it and 1 have no Ofcom figure. One postcode lies beyond the edge and is listed under the map. Places named: Carshalton South & Clockhouse, Wallington South. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Carshalton South & ClockhouseWallington South
  • No home or business can get gigabit: 18
  • Some can get gigabit: 13
  • Every home and business can get gigabit: 91
  • Ofcom gives no figure: 1

Of the 123 postcodes in the SM5 4 sector that ONS places, 18 have no home or business that can get gigabit, 13 have some that can, 91 can all get it and 1 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. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

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

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

Further out, not drawn

This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.

What do homes sell for in SM5 4?

Homes in SM5 4 sold for a typical £520,000 in the 12 months to September 2026, across 49 sales, HM Land Registry's figures show. The 12 months before gave £615,000 from 83 sales: not a change larger than chance would explain, given which homes happened to sell.

£520,000 typical price, the 12 months to September 2026
£615,000 12 months to September 2025
  • Detached £1,112,500 6 sales
  • Semi-detached £740,000 16 sales
  • Terraced £502,000 16 sales
  • Flat or maisonette £277,000 11 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 SM5 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.

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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