BT40 postcode
Broadband in BT40 3SZ
Islandmagee, Mid and East Antrim
Gigabit broadband is available at this postcode.
Free, independent comparison · Ofcom verified data · Updated 10 March 2026
Flood Risk
Low
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 BT40 3SZ. That covers your 14 Mbps needs with room to spare.
Speed Test
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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) | 100% | 100% | 100-300 Mbps |
| Full Fibre (FTTP) | 0% | 0% | 300-900 Mbps |
| Gigabit | 100% | 100% | 900-1,000 Mbps |
Speed Distribution at BT40 3SZ
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 Mid and East Antrim
Most common: Band
Annual council tax estimates for , 2024/25
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BT40 3SZ sits in Islandmagee, part of Mid and East Antrim. This guide covers broadband speeds, house prices, schools, and more. Every figure comes from verified public data sources. Use it alongside your own research when comparing areas.
Superfast broadband (30 Mbps+) coverage at BT40 3SZ stands at 100%. That is above the UK average of 93%. Ultrafast broadband (100 Mbps+) reaches 100% of properties. That is solid coverage for bandwidth-heavy households. Gigabit-capable connections cover 100% of premises. Most homes can access gigabit speeds if they choose to.
Here is how broadband speeds break down across premises at BT40 3SZ. 100% 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. Over half of connections exceed 300 Mbps. That supports multiple 4K streams, large file transfers, and cloud gaming without issue.
Here is how the broadband at BT40 3SZ maps against common household needs. Most premises have superfast speeds. Remote working with video calls and cloud tools should be manageable for most households.
FWA broadband has not reached BT40 3SZ yet. Satellite services like Starlink or 4G home broadband routers can fill the gap where fixed-line options are limited.
0% of premises at BT40 3SZ fall below the Universal Service Obligation of 10 Mbps. 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 BT40 3SZ is rated Low. Minor precautions may be worth considering. Check with insurers about any loading on premiums.
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.
Outdoor 4G mobile signal at BT40 3SZ is available across 95% of the area. 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 BT40 3SZ: remote working 55/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
BT40 3SZ falls within the Mid and East Antrim local authority area. The immediate area is Islandmagee, a distinct community within the wider district. The BT40 postcode area contains 720 postcodes on this site. Superfast broadband across BT40 ranges from 0% to 100%. BT40 3SZ is above the area average of 93%.
Not every property at BT40 3SZ 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.
Every part of Islandmagee has its own feel. This data gives you the factual starting point. A visit fills in the rest.
Looking at the overall picture for BT40 3SZ, a few things are worth highlighting. Connectivity at BT40 3SZ is a strength. Strong broadband coverage gives flexibility for both working and leisure. The area scores well on that front. Mid and East Antrim 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. Islandmagee 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.
Numbers tell part of the story for BT40 3SZ. Visit at different times of day. Talk to neighbours. Check mobile signal indoors. Walk the route to the nearest school or station. Test the broadband speed from inside the property. These things do not show up in data.
This covers the key data for BT40 3SZ. Broadband, property, schools, safety, and local services all in one place. For area-wide trends, see the Islandmagee 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 BT40 3SZ
What are the broadband speeds available at BT40 3SZ?
Superfast broadband (30 Mbps+) is available to 100% of premises at BT40 3SZ. Ultrafast coverage is at 100%.
What is the average house price near BT40 3SZ?
No recent house price data is available for BT40 3SZ.
What is the flood risk for properties at BT40 3SZ?
BT40 3SZ has a Low flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the BT40 3SZ area?
School data for BT40 3SZ is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in BT40 3SZ compare to other areas?
Crime data for this area is being updated.
How suitable is BT40 3SZ for remote working?
BT40 3SZ scores 55/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at BT40 3SZ?
4G outdoor coverage at BT40 3SZ is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near BT40 3SZ?
EPC data for BT40 3SZ is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at BT40 3SZ?
Council tax band information for BT40 3SZ is being updated.
How accessible are GP surgeries near BT40 3SZ?
GP surgery data for BT40 3SZ is being updated. Check NHS.uk for the latest.
What transport links are available near BT40 3SZ?
Transport data for BT40 3SZ is being updated.
Is BT40 3SZ a suitable area for families?
BT40 3SZ scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at BT40 3SZ?
Air quality data for BT40 3SZ is being updated.
How far is the nearest EV charging point from BT40 3SZ?
EV charging data for BT40 3SZ is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at BT40 3SZ?
Ultrafast broadband (100 Mbps+) reaches 100% of premises. Check Openreach and local operators for FTTP availability.
Area suitability scores
BT40 3SZRemote 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
Islandmagee
District
Mid and East Antrim
Region
Constituency
LSOA
N21000614
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