SO21 postcode

Broadband in SO21 3HL

South Wonston, Winchester

Standard broadband is the main option at this postcode.

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Free, independent comparison · Ofcom verified data · Updated 21 March 2026

Flood Risk

Low

Fibre (FTTP)

No

Best speed

Data pending

Reviewed by Rex BlackwellData last verified: 21 March 2026

Speed Calculator

Adjust the options below to see how much broadband speed your household needs.

2
18

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.

Estimated speed needed14 Mbps

Your household needs approximately 14 Mbps. We don't have speed data for SO21 3HL yet.

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Speed Test

Check your current download speed and see how it compares to what is available at SO21 3HL.

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)

TechnologyAvailableCoverageTypical Speed
Standard (ADSL)0%
0%
10-20 Mbps
Superfast (30+ Mbps)0%
0%
30-80 Mbps
Ultrafast (100+ Mbps)0%
0%
100-300 Mbps
Full Fibre (FTTP)0%
0%
300-900 Mbps
Gigabit0%
0%
900-1,000 Mbps

Speed Distribution at SO21 3HL

10–30 Mbps (100%)

Source: Ofcom Connected Nations 2025

Mobile coverage

4G & 5G coverage · Ofcom Connected Nations 2025

4G Outdoor

95%

4G Indoor

85%

5G Outdoor

%

Networks with 4G

EEO2ThreeVodafone
Ofcom Connected Nations 2025

Schools nearby

Nearest schools within 5 miles · Ofsted ratings as at Jan 2026

Schools data is currently unavailable.

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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

Environment Agency

Air quality

Particulate matter & nitrogen dioxide levels

air quality

Air quality data not available.

PM2.5 (fine particles) μg/m³

WHO guideline: 15 μg/m³

PM10 (coarse particles) μg/m³

WHO guideline: 45 μg/m³

NO₂ (nitrogen dioxide) μg/m³

WHO guideline: 25 μg/m³

DEFRA UK-AIR · Guidelines: WHO 2021

Transport links

Nearest train stations and towns

Nearest train stations

No train stations found within 15 miles

Network Rail / National Rail · Straight-line distances

Council tax bands

Band distribution for Winchester

Most common: Band

A
5%£1,381
B
10%£1,611
C
20%£1,841
D
25%£2,071
E
20%£2,531
F
10%£2,991
G
8%£3,452
H
2%£4,142

Annual council tax estimates for , 2024/25

VOA (Valuation Office Agency)

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Living near SO21 3HL

South Wonston is home to SO21 3HL. Whether you live here or plan to move, the data below paints a clear picture. Broadband, schools, crime, house prices, and local services all follow. The numbers speak for themselves.

Superfast broadband (30 Mbps+) coverage at SO21 3HL stands at 0%. That is below the UK average of 93%.

Here is how broadband speeds break down across premises at SO21 3HL. 100% of connections fall in the 10 to 30 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 3HL maps against common household needs. With no superfast coverage, streaming is limited. Standard definition video may work, but HD and 4K are unlikely to run smoothly. Downloading large files will take significantly longer than average. 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 3HL. 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 3HL, 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 3HL 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.

4G outdoor coverage at SO21 3HL 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 SO21 3HL: remote working 50/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.

SO21 3HL falls within the Winchester local authority area. The immediate area is South Wonston, 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%.

Broadband availability varies by provider and by property. At SO21 3HL, 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 South Wonston has its own feel. This data gives you the factual starting point. A visit fills in the rest.

Pulling the data together for SO21 3HL, here is what stands out. Broadband is the main concern at SO21 3HL. With no superfast coverage, check what alternatives exist before committing. 4G home broadband, satellite, or community fibre schemes may fill the gap. 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. South Wonston 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.

Before making a decision about SO21 3HL, visit in person. Check the commute at rush hour. Try the mobile signal indoors. Look at local shops and green spaces. Ask about broadband reliability, not just speed. Data sets the scene, but real life fills in the gaps.

This covers the key data for SO21 3HL. Broadband, property, schools, safety, and local services all in one place. For area-wide trends, see the South Wonston 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 3HL

What are the broadband speeds available at SO21 3HL?

Broadband is available at SO21 3HL. Contact local providers for specific speed information.

What is the average house price near SO21 3HL?

No recent house price data is available for SO21 3HL.

What is the flood risk for properties at SO21 3HL?

SO21 3HL has a Low flood risk rating. Check Environment Agency maps for detail.

What schools are nearby in the SO21 3HL area?

School data for SO21 3HL is being updated. Check the Get Information About Schools service for the latest.

How does crime rate in SO21 3HL compare to other areas?

Crime data for this area is being updated.

How suitable is SO21 3HL for remote working?

SO21 3HL scores 50/100 for remote working suitability. Speeds may limit video-heavy workflows.

What is the mobile signal like at SO21 3HL?

4G outdoor coverage at SO21 3HL is 95%. Indoor coverage may be lower.

What is the most common energy efficiency rating near SO21 3HL?

EPC data for SO21 3HL is being updated. Check the EPC register for individual property ratings.

What is the council tax band distribution at SO21 3HL?

Council tax band information for SO21 3HL is being updated.

How accessible are GP surgeries near SO21 3HL?

GP surgery data for SO21 3HL is being updated. Check NHS.uk for the latest.

What transport links are available near SO21 3HL?

Transport data for SO21 3HL is being updated.

Is SO21 3HL a suitable area for families?

SO21 3HL scores 50/100 for family suitability. Check school and crime sections above for detail.

What is the air quality like at SO21 3HL?

Air quality data for SO21 3HL is being updated.

How far is the nearest EV charging point from SO21 3HL?

EV charging data for SO21 3HL is being updated. Check Zap-Map for the latest.

Can I get full fibre broadband at SO21 3HL?

Full fibre availability at SO21 3HL is being updated. Check Openreach for the latest rollout status.

Area suitability scores

SO21 3HL

Remote Worker

50

Based on superfast broadband coverage, FTTP %, and 4G mobile outdoor coverage.

Family

50

Based on Ofsted school ratings, crime rate, flood risk, and GP surgery proximity.

Value for Money

50

Based on broadband quality relative to average house price in the area.

Map

Area info

Parish

South Wonston

District

Winchester

Region

Constituency

LSOA

E01023287

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