CT21 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 641 postcodes across 3 sectors in Folkestone and Hythe.
Full fibre
0%
Gigabit
80%
Superfast
92%
Postcodes
641
CT21 encompasses 641 Folkestone and Hythe postcodes with solid gigabit (80.3%), good superfast (91.8%), moderate fixed wireless (17.4%), and a notable 6% below 10 Mbps tail.
Broadband speeds in CT21
Share of CT21 premises by the fastest download speed available, averaged across all 641 postcodes in the district.
CT21 presents a puzzle: gigabit is strong at 80.3%, yet 6% of premises fall below 10 Mbps. This suggests mixed geography combining high-speed urban or suburban infrastructure with isolated rural pockets. Superfast coverage at 91.8% leaves 8.2% below this tier. Fixed wireless is minimal at 17.4%, offering little alternative to wired solutions for underserved premises. Speed distribution is 80.3% ultrafast (300+), 11.6% superfast-midrange, 6% below 10 Mbps. No premises fall outside the universal service obligation, but the 6% below-standard band is significant and scattered across the postcode area. The variance suggests infrastructure investment has concentrated in accessible zones, leaving outlying properties underserved.
Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.
Connectivity in detail
Below 10 Mbps USO
0%
Premises unable to get the 10 Mbps universal service minimum
Fixed wireless
17%
Premises that can use a fixed wireless access service
Broadband by sector
CT21 splits into 3 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.
| Sector | Postcodes | Superfast | Full fibre | Gigabit |
|---|---|---|---|---|
| CT21 4 | 183 | 74% | 0% | 61% |
| CT21 5 | 266 | 99% | 0% | 87% |
| CT21 6 | 192 | 98% | 0% | 90% |
All CT21 4 postcodes (183)
All CT21 5 postcodes (266)
All CT21 6 postcodes (192)
Best deals
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Living in Folkestone and Hythe
CT21 represents Folkestone and Hythe's mixed geography: strong cable and fibre in suburban zones, but isolated rural pockets facing genuine connectivity gaps.
Remote worker score
54/100
Connectivity and amenities for home working
Family score
50/100
Schools, safety and family amenities
Value score
50/100
What you get for the local price level
CT21 broadband FAQs
Why does CT21 have strong gigabit but also 6% below 10 Mbps premises?
Geography. CT21 likely spans suburban zones with cable coverage plus isolated rural properties where wired infrastructure ends.
Is CT21 safe for remote work?
Cautiously. Gigabit reaches 80.3%, but 6% of premises lack 10 Mbps. Verify your specific postcode carefully.
What should I do if my CT21 postcode is in the below 10 Mbps group?
Fixed wireless covers only 17.4%. Check your address against both fixed wireless and Ofcom's universal service obligation.
Does CT21 match CT19 or CT20?
No. CT19 reaches 94.3% gigabit with almost no substandard premises. CT21's 80.3% gigabit and 6% below-standard make it noticeably weaker.
Neighbouring districts
Check your exact postcode
Every postcode in CT21 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