SG3 postcode

Broadband in SG3 6ED

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 23 March 2026

Flood Risk

Medium

Fibre (FTTP)

No

Best speed

Gigabit (1Gbps+)

Reviewed by Rex BlackwellData last verified: 23 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 6ED. 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 6ED.

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 6ED

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 6ED

Looking at SG3 6ED 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.

100% of premises at SG3 6ED can access superfast broadband. The UK average is 93%. This postcode meets or exceeds that benchmark. 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.

The speed distribution at SG3 6ED tells a more detailed story than headline figures alone. 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.

Here is how the broadband at SG3 6ED maps against common household needs. 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 6ED 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 SG3 6ED, 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 SG3 6ED 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 SG3 6ED 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 SG3 6ED: remote working 55/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.

SG3 6ED falls within the North Hertfordshire local authority area. 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 6ED is close to the area average of 97%.

How does SG3 6ED compare to its neighbours? SG3 6DS (0.06 miles, knebworth) has 100% superfast coverage and 100% gigabit. Coverage is broadly similar across these neighbouring postcodes.

Not every property at SG3 6ED 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.

Knebworth offers a mix of residential properties and local amenities. The character of any area is best judged in person.

Pulling the data together for SG3 6ED, here is what stands out. Connectivity at SG3 6ED 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.

SG3 6ED in Knebworth: 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 SG3 6ED

What are the broadband speeds available at SG3 6ED?

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

What is the average house price near SG3 6ED?

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

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

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

What schools are nearby in the SG3 6ED area?

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

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

Crime data for this area is being updated.

How suitable is SG3 6ED for remote working?

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

What is the mobile signal like at SG3 6ED?

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

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

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

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

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

How accessible are GP surgeries near SG3 6ED?

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

What transport links are available near SG3 6ED?

Transport data for SG3 6ED is being updated.

Is SG3 6ED a suitable area for families?

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

What is the air quality like at SG3 6ED?

Air quality data for SG3 6ED is being updated.

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

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

Can I get full fibre broadband at SG3 6ED?

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

Area suitability scores

SG3 6ED

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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