YO21 postcode
Broadband in YO21 1SZ
Aislaby, North Yorkshire
Superfast broadband covers 90% of premises here.
Free, independent comparison · Ofcom verified data · Updated 6 March 2026
Flood Risk
Medium
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 YO21 1SZ 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 YO21 1SZ.
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) | 90% | 90% | 10-20 Mbps |
| Superfast (30+ Mbps) | 90% | 90% | 30-80 Mbps |
| Ultrafast (100+ Mbps) | 0% | 0% | 100-300 Mbps |
| Full Fibre (FTTP) | 0% | 0% | 300-900 Mbps |
| Gigabit | 0% | 0% | 900-1,000 Mbps |
Speed Distribution at YO21 1SZ
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 North Yorkshire
Most common: Band
Annual council tax estimates for , 2024/25
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Check Deals →Living near YO21 1SZ
This is the area guide for YO21 1SZ, located in Aislaby (North Yorkshire). It covers connectivity, property, safety, and local services. Every claim links back to a specific data point. Read on for the detail.
90% of premises at YO21 1SZ can access superfast broadband. The UK average is 93%. There is room for improvement here.
Looking at the full speed profile for YO21 1SZ gives a better picture of what to expect. 10% of connections fall in the 10 to 30 Mbps range. 90% of connections fall in the 30 to 300 Mbps range. No premises here are stuck below 5 Mbps. Every property meets the basic threshold for video calls.
Translating the numbers at YO21 1SZ 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.
Fixed Wireless Access (FWA) is available to 90% of premises at YO21 1SZ. 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 YO21 1SZ, 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 YO21 1SZ 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 YO21 1SZ 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 YO21 1SZ: remote working 50/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
YO21 1SZ falls within the North Yorkshire local authority area. The immediate area is Aislaby, a distinct community within the wider district. The YO21 postcode area contains 663 postcodes on this site. Superfast broadband across YO21 ranges from 0% to 100%. YO21 1SZ is above the area average of 83%.
How does YO21 1SZ compare to its neighbours? YO21 1SS (0.04 miles, aislaby) has 100% superfast coverage and 0% gigabit. YO21 1ST (0.05 miles, aislaby) has 100% superfast coverage and 0% gigabit. Neighbouring postcodes tend to have better superfast coverage.
Broadband availability varies by provider and by property. At YO21 1SZ, 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.
Life in Aislaby depends on what matters to you. Broadband, transport, and local services vary by street.
What does all of this mean for someone considering YO21 1SZ? Connectivity at YO21 1SZ is a strength. Strong broadband coverage gives flexibility for both working and leisure. The area scores well on that front. North Yorkshire 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. Aislaby 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 Aislaby. 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.
YO21 1SZ in Aislaby: broadband, house prices, crime, schools, and more. All from verified sources. Run a speed test above for a live reading. Compare with nearby postcodes to see how this area stacks up against its neighbours.
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 YO21 1SZ
What are the broadband speeds available at YO21 1SZ?
Superfast broadband (30 Mbps+) is available to 90% of premises at YO21 1SZ.
What is the average house price near YO21 1SZ?
No recent house price data is available for YO21 1SZ.
What is the flood risk for properties at YO21 1SZ?
YO21 1SZ has a Medium flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the YO21 1SZ area?
School data for YO21 1SZ is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in YO21 1SZ compare to other areas?
Crime data for this area is being updated.
How suitable is YO21 1SZ for remote working?
YO21 1SZ scores 50/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at YO21 1SZ?
4G outdoor coverage at YO21 1SZ is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near YO21 1SZ?
EPC data for YO21 1SZ is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at YO21 1SZ?
Council tax band information for YO21 1SZ is being updated.
How accessible are GP surgeries near YO21 1SZ?
GP surgery data for YO21 1SZ is being updated. Check NHS.uk for the latest.
What transport links are available near YO21 1SZ?
Transport data for YO21 1SZ is being updated.
Is YO21 1SZ a suitable area for families?
YO21 1SZ scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at YO21 1SZ?
Air quality data for YO21 1SZ is being updated.
How far is the nearest EV charging point from YO21 1SZ?
EV charging data for YO21 1SZ is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at YO21 1SZ?
Full fibre availability at YO21 1SZ is being updated. Check Openreach for the latest rollout status.
Area suitability scores
YO21 1SZRemote Worker
50Based 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
Aislaby
District
North Yorkshire
Region
Constituency
LSOA
E01027841
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