Broadband in Sutton
Coverage, speeds and prices for 3,734 postcodes across 14 postcode districts. Real data from Ofcom, Land Registry and Police.uk.
Superfast
98%
Full fibre
0%
Gigabit
89%
Postcodes
3,734
Sutton's coverage figures leave little to complain about. Superfast availability is 97.8%, ahead of the roughly 97% UK average, and just 0.1% of premises sit below 10 Mbps.
Browse Sutton by postcode district
Sutton covers 14 postcode districts with 3,734 postcodes in total. Coverage varies district by district, so pick yours for a full breakdown.
CR0
113 postcodes
99% superfast
0% full fibre
CR4
45 postcodes
100% superfast
0% full fibre
CR5
36 postcodes
94% superfast
0% full fibre
CR8
28 postcodes
100% superfast
CR9
3 postcodes
100% superfast
KT17
8 postcodes
100% superfast
0% full fibre
KT4
280 postcodes
100% superfast
0% full fibre
SM1
806 postcodes
95% superfast
0% full fibre
SM2
544 postcodes
99% superfast
0% full fibre
SM3
366 postcodes
100% superfast
0% full fibre
SM4
48 postcodes
100% superfast
0% full fibre
SM5
697 postcodes
98% superfast
0% full fibre
SM6
737 postcodes
97% superfast
0% full fibre
SM7
23 postcodes
100% superfast
0% full fibre
Broadband speeds in Sutton
Share of premises by the fastest download speed available, averaged across every Sutton postcode.
Gigabit-capable services reach 88.7% of premises in Sutton, an area of 14 outward codes taking in both SM and CR prefixes. That headline puts fast connections within reach of nearly nine addresses in ten. The superfast layer underneath is stronger still. At 97.8%, availability of 30 Mbps-plus speeds slightly exceeds the national average, and only 0.1% of premises fall below 10 Mbps. In practice these numbers describe an area where the network has largely been built out. Around one premises in nine still lacks a gigabit option, and for those addresses the ceiling is the superfast tier for now. Everyone else can choose between ordinary and very fast packages on price rather than availability. Across 3,734 postcodes, genuinely stranded addresses number very few indeed.
Source: Ofcom Connected Nations. Percentages are averages of postcode-level availability, so rows may not sum to exactly 100%.
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Sutton at a glance
For anyone weighing a move, Sutton's numbers reduce broadband to a minor line item. A below-10 Mbps line affects 0.1% of premises, so the downside risk is minimal, and the 88.7% gigabit figure means most households can buy their way to whatever speed they need. The smaller group limited to superfast still gets a connection that handles ordinary family use without strain.
Remote worker score
55/100
Connectivity and amenities for home working
Family score
50/100
Schools, safety and family amenities
Sutton broadband FAQs
How good is broadband coverage in Sutton overall?
Strong across the board, with 97.8% superfast availability, 88.7% gigabit-capable coverage and a slow tail of only 0.1%.
Do the CR postcodes count as part of the Sutton data?
Yes. The 14 outward codes here include CR0, CR4 and CR5 alongside the SM codes.
What are my chances of getting gigabit speeds in Sutton?
Good. 88.7% of premises can order a gigabit-capable service, so close to nine in ten addresses qualify.
How rare are sub-10 Mbps lines in Sutton?
Very rare. They affect 0.1% of premises.
Does Sutton beat the UK average for superfast coverage?
Narrowly. 97.8% here against about 97% nationally.
Check your exact postcode
Every postcode in Sutton has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.
Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources