SA1 postcode
Broadband in SA1 3SR
Castle, Swansea
Superfast broadband covers 100% of premises here.
Free, independent comparison · Ofcom verified data · Updated 21 March 2026
Flood Risk
Low
Fibre (FTTP)
No
Best speed
~30 Mbps
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.
The best available speed at SA1 3SR is ~30 Mbps. That covers your 14 Mbps estimate.
Speed Test
Check your current download speed and see how it compares to what is available at SA1 3SR.
The test downloads a 2 MB file from our server and measures how long it takes.
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) | 0% | 0% | 100-300 Mbps |
| Full Fibre (FTTP) | N/A | N/A | 300-900 Mbps |
| Gigabit | 0% | 0% | 900-1,000 Mbps |
Speed Distribution at SA1 3SR
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: Low
This postcode is in undefined — low risk of flooding from rivers and sea.
Flood Zone
Risk Level
Low
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 Swansea
Most common: Band
Annual council tax estimates for , 2024/25
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SA1 3SR sits in Castle, part of Swansea. This guide covers broadband speeds, house prices, schools, and more. Every figure comes from verified public data sources.
100% of premises at SA1 3SR can access superfast broadband.
Next-generation access (NGA) reaches 100% of the area. 0% of connections can achieve 300 Mbps or faster.
Flood risk at SA1 3SR is rated Low. Minor precautions may be worth considering.
Coverage data includes EE,O2,Three,Vodafone.
Suitability scores for SA1 3SR: remote working 55/100, family 50/100, value 50/100. Remote workers may want to check actual speeds before committing.
Not every property at SA1 3SR gets the same speeds. Run a postcode check with each provider. Compare contract lengths and total costs, not just headline speeds.
Castle offers a mix of local amenities and residential properties. The character of the area is best judged by visiting in person.
Data sources include Ofcom (broadband), 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. All figures are the latest available at the time of writing.
Data is a starting point. Walk the streets at different times. Test your mobile signal. Check parking, noise, and the feel of the area. Some things only a visit can reveal.
This covers the key data for SA1 3SR. Broadband, property, schools, safety, and local services all in one place. Check back periodically as data updates. For area-wide trends, see the Castle district page.
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 SA1 3SR
What are the broadband speeds available at SA1 3SR?
Superfast broadband (30 Mbps+) is available to 100% of premises at SA1 3SR.
What is the average house price near SA1 3SR?
No recent house price data is available for SA1 3SR.
What is the flood risk for properties at SA1 3SR?
SA1 3SR has a Low flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the SA1 3SR area?
School data for SA1 3SR is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in SA1 3SR compare to other areas?
Crime data for this area is being updated.
How suitable is SA1 3SR for remote working?
SA1 3SR scores 55/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at SA1 3SR?
Mobile coverage data for SA1 3SR is being updated. Check Ofcom coverage maps for the latest.
What is the most common energy efficiency rating near SA1 3SR?
EPC data for SA1 3SR is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at SA1 3SR?
Council tax band information for SA1 3SR is being updated.
How accessible are GP surgeries near SA1 3SR?
GP surgery data for SA1 3SR is being updated. Check NHS.uk for the latest.
What transport links are available near SA1 3SR?
Transport data for SA1 3SR is being updated.
Is SA1 3SR a suitable area for families?
SA1 3SR scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at SA1 3SR?
Air quality data for SA1 3SR is being updated.
How far is the nearest EV charging point from SA1 3SR?
EV charging data for SA1 3SR is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at SA1 3SR?
Full fibre availability at SA1 3SR is being updated. Check Openreach for the latest rollout status.
Area suitability scores
SA1 3SRRemote 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
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Area info
Parish
Castle
District
Swansea
Region
Constituency
LSOA
W01001997
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