SG3 postcode

Broadband in SG3 6AY

Knebworth, North Hertfordshire

Gigabit broadband is available at this postcode.

Best speedGigabit (1Gbps+)
StandardSuperfastGigabit
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Free, independent comparison · Ofcom verified data · Updated 13 March 2026

Flood Risk

Medium

Fibre (FTTP)

No

Best speed

Gigabit (1Gbps+)

Reviewed by Sage MitchellData last verified: 13 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

Gigabit broadband (Gigabit (1Gbps+)) is available at SG3 6AY. That covers your 14 Mbps needs with room to spare.

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Speed Test

Check your current download speed and see how it compares to what is available at SG3 6AY.

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)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
Gigabit100%
100%
900-1,000 Mbps

Speed Distribution at SG3 6AY

100%
300+ 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: Medium

This postcode is in undefined — medium risk of flooding from rivers and sea.

Flood Zone

Risk Level

Medium

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 North Hertfordshire

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 SG3 6AY

Looking at SG3 6AY in Knebworth? Here is what the data says. From broadband coverage to crime rates, this is the full picture. All numbers are from official sources. The guide is updated as new data becomes available.

Superfast coverage here stands at 100%. Nationally, 93% of UK premises have access. Coverage at this postcode is strong. 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.

Looking at the full speed profile for SG3 6AY gives a better picture of what to expect. 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.

What do the broadband speeds at SG3 6AY mean in practice? Most premises have superfast speeds. Remote working with video calls and cloud tools should be manageable for most households.

FWA broadband has not reached SG3 6AY yet. Satellite services like Starlink or 4G home broadband routers can fill the gap where fixed-line options are limited.

0% of premises at SG3 6AY 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 SG3 6AY 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 SG3 6AY 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 SG3 6AY: remote working 55/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.

The local authority for SG3 6AY is North Hertfordshire. The immediate area is Knebworth, a distinct community within the wider district. The SG3 postcode area contains 202 postcodes on this site. Superfast broadband across SG3 ranges from 0% to 100%. SG3 6AY is close to the area average of 97%.

How does SG3 6AY compare to its neighbours? SG3 6DQ (0.04 miles, knebworth) has 100% superfast coverage and 100% gigabit. Coverage is broadly similar across these neighbouring postcodes.

Broadband availability varies by provider and by property. At SG3 6AY, 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 Knebworth has its own feel. This data gives you the factual starting point. A visit fills in the rest.

Looking at the overall picture for SG3 6AY, a few things are worth highlighting. Connectivity at SG3 6AY is a strength. Strong broadband coverage gives flexibility for both working and leisure. The area scores well on that front. North Hertfordshire 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. Knebworth 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 Knebworth. 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.

This covers the key data for SG3 6AY. Broadband, property, schools, safety, and local services all in one place. For area-wide trends, see the Knebworth 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 SG3 6AY

What are the broadband speeds available at SG3 6AY?

Superfast broadband (30 Mbps+) is available to 100% of premises at SG3 6AY. Ultrafast coverage is at 100%.

What is the average house price near SG3 6AY?

No recent house price data is available for SG3 6AY.

What is the flood risk for properties at SG3 6AY?

SG3 6AY has a Medium flood risk rating. Check Environment Agency maps for detail.

What schools are nearby in the SG3 6AY area?

School data for SG3 6AY is being updated. Check the Get Information About Schools service for the latest.

How does crime rate in SG3 6AY compare to other areas?

Crime data for this area is being updated.

How suitable is SG3 6AY for remote working?

SG3 6AY scores 55/100 for remote working suitability. Speeds may limit video-heavy workflows.

What is the mobile signal like at SG3 6AY?

4G outdoor coverage at SG3 6AY is 95%. Indoor coverage may be lower.

What is the most common energy efficiency rating near SG3 6AY?

EPC data for SG3 6AY is being updated. Check the EPC register for individual property ratings.

What is the council tax band distribution at SG3 6AY?

Council tax band information for SG3 6AY is being updated.

How accessible are GP surgeries near SG3 6AY?

GP surgery data for SG3 6AY is being updated. Check NHS.uk for the latest.

What transport links are available near SG3 6AY?

Transport data for SG3 6AY is being updated.

Is SG3 6AY a suitable area for families?

SG3 6AY scores 50/100 for family suitability. Check school and crime sections above for detail.

What is the air quality like at SG3 6AY?

Air quality data for SG3 6AY is being updated.

How far is the nearest EV charging point from SG3 6AY?

EV charging data for SG3 6AY is being updated. Check Zap-Map for the latest.

Can I get full fibre broadband at SG3 6AY?

Ultrafast broadband (100 Mbps+) reaches 100% of premises. Check Openreach and local operators for FTTP availability.

Area suitability scores

SG3 6AY

Remote Worker

55

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

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Area info

Parish

Knebworth

District

North Hertfordshire

Region

Constituency

LSOA

E01023629

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