AL5 postcode
Broadband in AL5 1BB
Harpenden Town, St Albans
Gigabit broadband is available at this postcode.
Free, independent comparison · Ofcom verified data · Updated 1 March 2026
Flood Risk
Medium
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 AL5 1BB. That covers your 14 Mbps needs with room to spare.
Speed Test
Check your current download speed and see how it compares to what is available at AL5 1BB.
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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) | 100% | 100% | 100-300 Mbps |
| Full Fibre (FTTP) | N/A | N/A | 300-900 Mbps |
| Gigabit | 100% | 100% | 900-1,000 Mbps |
Speed Distribution at AL5 1BB
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: Medium
This postcode is in undefined — medium risk of flooding from rivers and sea.
Flood Zone
Risk Level
Medium
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 St Albans
Most common: Band
Annual council tax estimates for , 2024/25
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This is the area guide for AL5 1BB, located in Harpenden Town (St Albans). It covers connectivity, property, safety, and local services. Every claim links back to a specific data point. Read on for the detail.
Superfast broadband (30 Mbps+) coverage at AL5 1BB 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 AL5 1BB. 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.
Translating the numbers at AL5 1BB into daily use gives a clearer picture. Most premises have superfast speeds. Remote working with video calls and cloud tools should be manageable for most households.
FWA broadband has not reached AL5 1BB yet. Satellite services like Starlink or 4G home broadband routers can fill the gap where fixed-line options are limited.
The USO guarantees every UK home at least 10 Mbps. At AL5 1BB, 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 AL5 1BB is rated Medium. 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 AL5 1BB 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 AL5 1BB: remote working 55/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
The local authority for AL5 1BB is St Albans. The immediate area is Harpenden Town, a distinct community within the wider district. The AL5 postcode area contains 1036 postcodes on this site. Superfast broadband across AL5 ranges from 0% to 100%. AL5 1BB is close to the area average of 98%.
How does AL5 1BB compare to its neighbours? AL5 1BD (0.02 miles, harpenden-town) has 100% superfast coverage and 100% gigabit. AL5 1BA (0.04 miles, harpenden-town) has 100% superfast coverage and 100% gigabit. AL5 1DR (0.05 miles, harpenden-town) has 100% superfast coverage and 100% gigabit. AL5 1QL (0.05 miles, harpenden-town) has 100% superfast coverage and 0% gigabit. Coverage is broadly similar across these neighbouring postcodes.
Broadband availability varies by provider and by property. At AL5 1BB, check individual coverage tools from BT, Sky, Virgin Media, and local operators. 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 Harpenden Town has its own feel. This data gives you the factual starting point. A visit fills in the rest.
Pulling the data together for AL5 1BB, here is what stands out. Connectivity at AL5 1BB is a strength. Strong broadband coverage gives flexibility for both working and leisure. The area scores well on that front. St Albans 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. Harpenden Town 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 Harpenden Town. 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.
That is the full data picture for AL5 1BB in Harpenden Town. Use it alongside your own research. For the most current broadband speeds, run a live speed test from this page. Check back periodically as data is refreshed with new releases.
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 AL5 1BB
What are the broadband speeds available at AL5 1BB?
Superfast broadband (30 Mbps+) is available to 100% of premises at AL5 1BB. Ultrafast coverage is at 100%.
What is the average house price near AL5 1BB?
No recent house price data is available for AL5 1BB.
What is the flood risk for properties at AL5 1BB?
AL5 1BB has a Medium flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the AL5 1BB area?
School data for AL5 1BB is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in AL5 1BB compare to other areas?
Crime data for this area is being updated.
How suitable is AL5 1BB for remote working?
AL5 1BB scores 55/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at AL5 1BB?
4G outdoor coverage at AL5 1BB is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near AL5 1BB?
EPC data for AL5 1BB is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at AL5 1BB?
Council tax band information for AL5 1BB is being updated.
How accessible are GP surgeries near AL5 1BB?
GP surgery data for AL5 1BB is being updated. Check NHS.uk for the latest.
What transport links are available near AL5 1BB?
Transport data for AL5 1BB is being updated.
Is AL5 1BB a suitable area for families?
AL5 1BB scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at AL5 1BB?
Air quality data for AL5 1BB is being updated.
How far is the nearest EV charging point from AL5 1BB?
EV charging data for AL5 1BB is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at AL5 1BB?
Ultrafast broadband (100 Mbps+) reaches 100% of premises. Check Openreach and local operators for FTTP availability.
Area suitability scores
AL5 1BBRemote 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
Harpenden Town
District
St Albans
Region
Constituency
LSOA
E01023697
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