SN38 4 postcode sector in the SN38 district

SN38 4 is a sector of the SN38 district: every postcode that starts SN38 4. It has 10 postcodes in use, 10 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 SN38 4 sector, by gigabit broadband

Map of every postcode in the SN38 4 sector, by gigabit broadband Of the 10 postcodes in the SN38 4 sector that ONS places, 4 have no home or business that can get gigabit and 6 have no Ofcom figure. Places named: Swindon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A3102 SN38 4AD: no Ofcom figureSN38 4AE: no Ofcom figureSN38 4NW: no Ofcom figureSN38 4FN: no gigabit Swindon Map of every postcode in the SN38 4 sector, by gigabit broadband Of the 10 postcodes in the SN38 4 sector that ONS places, 4 have no home or business that can get gigabit and 6 have no Ofcom figure. Places named: Swindon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. M4A3102A4289 Swindon
  • No home or business can get gigabit: 4
  • Some can get gigabit: 0
  • Every home and business can get gigabit: 0
  • Ofcom gives no figure: 6

Of the 10 postcodes in the SN38 4 sector that ONS places, 4 have no home or business that can get gigabit and 6 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.

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

SN38 4FNSN38 4GNSN38 4LNSN38 4SN

Postcodes in SN38 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.

SN38 4ADSN38 4AESN38 4FNSN38 4GNSN38 4LNSN38 4NWSN38 4SNSN38 4TDSN38 4TLSN38 4XJ

Source: ONS Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed.

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.

Licence: Open Government Licence v3.0.

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