SG4 postcode

Broadband in SG4 9BB

St Ippolyts, North Hertfordshire

Gigabit broadband is available at this postcode.

Best speedGigabit (1Gbps+)
StandardSuperfastGigabit
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Free, independent comparison · Ofcom verified data · Updated 7 March 2026

Flood Risk

Medium

Fibre (FTTP)

No

Best speed

Gigabit (1Gbps+)

Reviewed by Sage MitchellData last verified: 7 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 SG4 9BB. 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 SG4 9BB.

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 SG4 9BB

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 SG4 9BB

Looking at SG4 9BB in St Ippolyts? 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 SG4 9BB 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 SG4 9BB 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.

What do the broadband speeds at SG4 9BB 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 SG4 9BB yet. Satellite services like Starlink or 4G home broadband routers can fill the gap where fixed-line options are limited.

0% of premises at SG4 9BB 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 SG4 9BB 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 SG4 9BB 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 SG4 9BB: remote working 55/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.

SG4 9BB falls within the North Hertfordshire local authority area. The immediate area is St Ippolyts, a distinct community within the wider district. The SG4 postcode area contains 890 postcodes on this site. Superfast broadband across SG4 ranges from 0% to 100%. SG4 9BB is above the area average of 92%.

How does SG4 9BB compare to its neighbours? SG4 9FP (0.05 miles, st-ippolyts) has 100% superfast coverage and 100% gigabit. SG4 9BD (0.06 miles, st-ippolyts) has 100% superfast coverage and 100% gigabit. Coverage is broadly similar across these neighbouring postcodes.

Not every property at SG4 9BB 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.

Life in St Ippolyts depends on what matters to you. Broadband, transport, and local services vary by street.

Pulling the data together for SG4 9BB, here is what stands out. Connectivity at SG4 9BB 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. St Ippolyts 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 St Ippolyts. 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 SG4 9BB. Broadband, property, schools, safety, and local services all in one place. For area-wide trends, see the St Ippolyts 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 SG4 9BB

What are the broadband speeds available at SG4 9BB?

Superfast broadband (30 Mbps+) is available to 100% of premises at SG4 9BB. Ultrafast coverage is at 100%.

What is the average house price near SG4 9BB?

No recent house price data is available for SG4 9BB.

What is the flood risk for properties at SG4 9BB?

SG4 9BB has a Medium flood risk rating. Check Environment Agency maps for detail.

What schools are nearby in the SG4 9BB area?

School data for SG4 9BB is being updated. Check the Get Information About Schools service for the latest.

How does crime rate in SG4 9BB compare to other areas?

Crime data for this area is being updated.

How suitable is SG4 9BB for remote working?

SG4 9BB scores 55/100 for remote working suitability. Speeds may limit video-heavy workflows.

What is the mobile signal like at SG4 9BB?

4G outdoor coverage at SG4 9BB is 95%. Indoor coverage may be lower.

What is the most common energy efficiency rating near SG4 9BB?

EPC data for SG4 9BB is being updated. Check the EPC register for individual property ratings.

What is the council tax band distribution at SG4 9BB?

Council tax band information for SG4 9BB is being updated.

How accessible are GP surgeries near SG4 9BB?

GP surgery data for SG4 9BB is being updated. Check NHS.uk for the latest.

What transport links are available near SG4 9BB?

Transport data for SG4 9BB is being updated.

Is SG4 9BB a suitable area for families?

SG4 9BB scores 50/100 for family suitability. Check school and crime sections above for detail.

What is the air quality like at SG4 9BB?

Air quality data for SG4 9BB is being updated.

How far is the nearest EV charging point from SG4 9BB?

EV charging data for SG4 9BB is being updated. Check Zap-Map for the latest.

Can I get full fibre broadband at SG4 9BB?

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

Area suitability scores

SG4 9BB

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

Area info

Parish

St Ippolyts

District

North Hertfordshire

Region

Constituency

LSOA

E01023614

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