SO21 postcode
Broadband in SO21 1BW
Itchen Valley, Winchester
Superfast broadband covers 20% of premises here.
Free, independent comparison · Ofcom verified data · Updated 22 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 SO21 1BW 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 SO21 1BW.
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) | 20% | 20% | 10-20 Mbps |
| Superfast (30+ Mbps) | 20% | 20% | 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 SO21 1BW
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 Winchester
Most common: Band
Annual council tax estimates for , 2024/25
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SO21 1BW sits in Itchen Valley, part of Winchester. 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.
20% of premises at SO21 1BW can access superfast broadband. The UK average is 93%. There is room for improvement here.
Looking at the full speed profile for SO21 1BW gives a better picture of what to expect. 80% of connections fall in the 10 to 30 Mbps range. 20% 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.
Here is how the broadband at SO21 1BW maps against common household needs. Superfast coverage is limited here. Streaming HD video should work on one device. Multiple simultaneous streams may struggle during peak hours. Limited superfast coverage means remote workers should test their connection carefully. Video calls may drop or pixelate. A mobile hotspot can serve as a backup.
Fixed Wireless Access is not currently available at SO21 1BW. For properties without fibre, 4G or 5G home broadband from Three, EE, or Vodafone may be an alternative.
The USO guarantees every UK home at least 10 Mbps. At SO21 1BW, 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 SO21 1BW 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.
Outdoor 4G mobile signal at SO21 1BW 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. Strong 4G coverage combined with limited fixed broadband means 4G home broadband could be a practical alternative here.
Suitability scores for SO21 1BW: remote working 35/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
The local authority for SO21 1BW is Winchester. The immediate area is Itchen Valley, a distinct community within the wider district. The SO21 postcode area contains 732 postcodes on this site. Superfast broadband across SO21 ranges from 0% to 100%. SO21 1BW is below the area average of 79%.
Not every property at SO21 1BW 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 Itchen Valley has its own feel. This data gives you the factual starting point. A visit fills in the rest.
What does all of this mean for someone considering SO21 1BW? Winchester 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. Itchen Valley 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 SO21 1BW. 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 SO21 1BW. Broadband, property, schools, safety, and local services all in one place. For area-wide trends, see the Itchen Valley 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 SO21 1BW
What are the broadband speeds available at SO21 1BW?
Superfast broadband (30 Mbps+) is available to 20% of premises at SO21 1BW.
What is the average house price near SO21 1BW?
No recent house price data is available for SO21 1BW.
What is the flood risk for properties at SO21 1BW?
SO21 1BW has a Medium flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the SO21 1BW area?
School data for SO21 1BW is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in SO21 1BW compare to other areas?
Crime data for this area is being updated.
How suitable is SO21 1BW for remote working?
SO21 1BW scores 35/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at SO21 1BW?
4G outdoor coverage at SO21 1BW is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near SO21 1BW?
EPC data for SO21 1BW is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at SO21 1BW?
Council tax band information for SO21 1BW is being updated.
How accessible are GP surgeries near SO21 1BW?
GP surgery data for SO21 1BW is being updated. Check NHS.uk for the latest.
What transport links are available near SO21 1BW?
Transport data for SO21 1BW is being updated.
Is SO21 1BW a suitable area for families?
SO21 1BW scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at SO21 1BW?
Air quality data for SO21 1BW is being updated.
How far is the nearest EV charging point from SO21 1BW?
EV charging data for SO21 1BW is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at SO21 1BW?
Full fibre availability at SO21 1BW is being updated. Check Openreach for the latest rollout status.
Area suitability scores
SO21 1BWRemote Worker
35Based 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
Itchen Valley
District
Winchester
Region
Constituency
LSOA
E01023236
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