CT20 postcode
Broadband in CT20 3SU
Sandgate, Folkestone and Hythe
Gigabit broadband is available at this postcode.
Free, independent comparison · Ofcom verified data · Updated 5 March 2026
Flood Risk
High
Fibre (FTTP)
No
Best speed
Gigabit (1Gbps+)
Speed Calculator
Adjust the options below to see how much broadband speed your household needs.
HD uses ~5 Mbps per person. 4K uses ~25 Mbps.
Each person on calls needs around 10 Mbps.
Competitive gaming needs low latency as much as raw speed.
Cameras, thermostats, speakers and similar devices each use a few Mbps.
Gigabit broadband (Gigabit (1Gbps+)) is available at CT20 3SU. That covers your 14 Mbps needs with room to spare.
Speed Test
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This test measures download speed only. Results vary depending on network conditions.
Broadband availability
Source: Ofcom Connected Nations 2025 (Jul 2025)
| Technology | Available | Coverage | Typical Speed |
|---|---|---|---|
| Standard (ADSL) | 100% | 100% | 10-20 Mbps |
| Superfast (30+ Mbps) | 100% | 100% | 30-80 Mbps |
| Ultrafast (100+ Mbps) | 38% | 38% | 100-300 Mbps |
| Full Fibre (FTTP) | N/A | N/A | 300-900 Mbps |
| Gigabit | 38% | 38% | 900-1,000 Mbps |
Speed Distribution at CT20 3SU
Source: Ofcom Connected Nations 2025
Mobile coverage
4G & 5G coverage · Ofcom Connected Nations 2025
4G Outdoor
4G Indoor
5G Outdoor
Networks with 4G
Schools nearby
Nearest schools within 5 miles · Ofsted ratings as at Jan 2026
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Flood risk
🔴
Flood risk: High
This postcode is in undefined — high risk of flooding from rivers and sea.
Flood Zone
Risk Level
High
Air quality
Particulate matter & nitrogen dioxide levels
air quality
Air quality data not available.
WHO guideline: 15 μg/m³
WHO guideline: 45 μg/m³
WHO guideline: 25 μg/m³
Transport links
Nearest train stations and towns
Nearest train stations
No train stations found within 15 miles
Council tax bands
Band distribution for Folkestone and Hythe
Most common: Band
Annual council tax estimates for , 2024/25
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Sandgate is home to CT20 3SU. Whether you live here or plan to move, the data below paints a clear picture. Broadband, schools, crime, house prices, and local services all follow. The numbers speak for themselves.
Superfast broadband (30 Mbps+) coverage at CT20 3SU stands at 100%. That is above the UK average of 93%. Ultrafast broadband (100 Mbps+) reaches 37.5% of properties. Fewer than half of homes here can get ultrafast speeds. Gigabit-capable connections cover 37.5% of premises. Gigabit is available but not yet widespread at this postcode.
The speed distribution at CT20 3SU tells a more detailed story than headline figures alone. 62.5% of connections fall in the 30 to 300 Mbps range. 37.5% of connections fall in the 300 Mbps or faster range. No premises here are stuck below 5 Mbps. Every property meets the basic threshold for video calls. 37.5% of premises can hit 300 Mbps or more. That is enough for demanding multi-device households.
Here is how the broadband at CT20 3SU maps against common household needs. Most premises have superfast speeds. Remote working with video calls and cloud tools should be manageable for most households.
Fixed Wireless Access (FWA) is available to 62.5% of premises at CT20 3SU. FWA uses a fixed antenna to deliver broadband without a phone line or fibre cable. FWA coverage is strong here. Providers like Three and EE offer home broadband over their mobile networks.
The USO guarantees every UK home at least 10 Mbps. At CT20 3SU, 0% of properties do not meet this threshold. Every property here meets the minimum standard. That is not the case everywhere. Next-generation access (NGA) reaches 100% of the area. NGA typically means speeds of 24 Mbps or above.
Flood risk at CT20 3SU is rated High. Check Environment Agency flood maps for detailed information. Specialist flood insurance may be needed.
The three most common bands are D (25%), C (20%), E (20%). Band D corresponds to 1991 property values of £68,001 to £88,000. Current values are typically much higher. The spread across mid-range bands suggests a varied housing stock.
4G outdoor coverage at CT20 3SU reaches 95%. Indoor 4G drops to 85%. Some signal loss indoors is normal. Most calls and data should still work inside. Coverage data covers EE, O2, Three, Vodafone. Check each operator individually, as coverage varies by network.
Suitability scores for CT20 3SU: remote working 55/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
The local authority for CT20 3SU is Folkestone and Hythe. The immediate area is Sandgate, a distinct community within the wider district. The CT20 postcode area contains 712 postcodes on this site. Superfast broadband across CT20 ranges from 0% to 100%. CT20 3SU is close to the area average of 98%.
How does CT20 3SU compare to its neighbours? CT20 3AE (0.02 miles, sandgate) has 100% superfast coverage and 0% gigabit. CT20 3AF (0.05 miles, sandgate) has 100% superfast coverage and 100% gigabit. CT20 3AD (0.05 miles, sandgate) has 100% superfast coverage and 100% gigabit. CT20 3RT (0.06 miles, sandgate) has 100% superfast coverage and 100% gigabit. Coverage is broadly similar across these neighbouring postcodes.
Not every property at CT20 3SU gets the same speeds. Run a postcode check with each provider before signing up. Headline speeds are not guarantees. If fibre is unavailable, consider 4G home broadband or satellite as alternatives. Speeds may still be adequate for most uses. Compare contract lengths, total costs over the term, and exit fees. The cheapest monthly rate is not always the best deal.
Sandgate offers a mix of residential properties and local amenities. The character of any area is best judged in person.
Looking at the overall picture for CT20 3SU, a few things are worth highlighting. Connectivity at CT20 3SU is a strength. Strong broadband coverage gives flexibility for both working and leisure. The area scores well on that front. Folkestone and Hythe as a local authority area has its own planning priorities, council services, and infrastructure investment plans. Check the council website for the latest. The data covers what can be measured. Sandgate has its own character that numbers alone cannot capture. Use these figures as a filter, then visit to get the full picture.
Data sources include Ofcom (broadband and mobile), Land Registry (house prices), Police.uk (crime), Ofsted (schools), Environment Agency (flood risk), and Open-Meteo (air quality). Council tax data comes from the Valuation Office Agency. EPC data is from DLUHC. Transport data uses NaPTAN. Speed distribution figures are from Ofcom Connected Nations. All figures are the latest available at the time of writing.
Data is a starting point for Sandgate. Walk the streets at different times. Test your mobile signal. Check parking, noise levels, and the feel of the neighbourhood. Run a speed test on the actual connection. Some things only a visit can reveal.
This covers the key data for CT20 3SU. Broadband, property, schools, safety, and local services all in one place. For area-wide trends, see the Sandgate hub page. Bookmark this page and check back as new data arrives.
More local data is being added for this postcode
This page already has postcode-specific content, and more data-backed sections will appear as the remaining local datasets finish processing.
Frequently asked questions about CT20 3SU
What are the broadband speeds available at CT20 3SU?
Superfast broadband (30 Mbps+) is available to 100% of premises at CT20 3SU. Ultrafast coverage is at 37.5%.
What is the average house price near CT20 3SU?
No recent house price data is available for CT20 3SU.
What is the flood risk for properties at CT20 3SU?
CT20 3SU has a High flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the CT20 3SU area?
School data for CT20 3SU is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in CT20 3SU compare to other areas?
Crime data for this area is being updated.
How suitable is CT20 3SU for remote working?
CT20 3SU scores 55/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at CT20 3SU?
4G outdoor coverage at CT20 3SU is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near CT20 3SU?
EPC data for CT20 3SU is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at CT20 3SU?
Council tax band information for CT20 3SU is being updated.
How accessible are GP surgeries near CT20 3SU?
GP surgery data for CT20 3SU is being updated. Check NHS.uk for the latest.
What transport links are available near CT20 3SU?
Transport data for CT20 3SU is being updated.
Is CT20 3SU a suitable area for families?
CT20 3SU scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at CT20 3SU?
Air quality data for CT20 3SU is being updated.
How far is the nearest EV charging point from CT20 3SU?
EV charging data for CT20 3SU is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at CT20 3SU?
Ultrafast broadband (100 Mbps+) reaches 37.5% of premises. Check Openreach and local operators for FTTP availability.
Area suitability scores
CT20 3SURemote Worker
55Based on superfast broadband coverage, FTTP %, and 4G mobile outdoor coverage.
Family
50Based on Ofsted school ratings, crime rate, flood risk, and GP surgery proximity.
Value for Money
50Based on broadband quality relative to average house price in the area.
Map
Area info
Parish
Sandgate
District
Folkestone and Hythe
Region
Constituency
LSOA
E01024521
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