SG4 postcode

Broadband in SG4 8XJ

Codicote, 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 Arthur TuringData 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 SG4 8XJ. 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 8XJ.

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 8XJ

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 8XJ

SG4 8XJ sits in Codicote, part of North Hertfordshire. 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.

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.

The speed distribution at SG4 8XJ 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 8XJ 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 8XJ 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 SG4 8XJ, 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 SG4 8XJ 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 8XJ 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 8XJ: remote working 55/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.

The local authority for SG4 8XJ is North Hertfordshire. The immediate area is Codicote, 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 8XJ is above the area average of 92%.

How does SG4 8XJ compare to its neighbours? SG4 8XN (0.02 miles, codicote) has 100% superfast coverage and 100% gigabit. SG4 8XR (0.03 miles, codicote) has 100% superfast coverage and 100% gigabit. Coverage is broadly similar across these neighbouring postcodes.

When choosing a broadband provider at SG4 8XJ, check what technology reaches your specific address. Availability varies by street and sometimes by building. 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 Codicote has its own feel. This data gives you the factual starting point. A visit fills in the rest.

Looking at the overall picture for SG4 8XJ, a few things are worth highlighting. Connectivity at SG4 8XJ 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. Codicote 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 Codicote. 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.

SG4 8XJ in Codicote: 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 SG4 8XJ

What are the broadband speeds available at SG4 8XJ?

Superfast broadband (30 Mbps+) is available to 100% of premises at SG4 8XJ. Ultrafast coverage is at 100%.

What is the average house price near SG4 8XJ?

No recent house price data is available for SG4 8XJ.

What is the flood risk for properties at SG4 8XJ?

SG4 8XJ has a Medium flood risk rating. Check Environment Agency maps for detail.

What schools are nearby in the SG4 8XJ area?

School data for SG4 8XJ is being updated. Check the Get Information About Schools service for the latest.

How does crime rate in SG4 8XJ compare to other areas?

Crime data for this area is being updated.

How suitable is SG4 8XJ for remote working?

SG4 8XJ scores 55/100 for remote working suitability. Speeds may limit video-heavy workflows.

What is the mobile signal like at SG4 8XJ?

4G outdoor coverage at SG4 8XJ is 95%. Indoor coverage may be lower.

What is the most common energy efficiency rating near SG4 8XJ?

EPC data for SG4 8XJ is being updated. Check the EPC register for individual property ratings.

What is the council tax band distribution at SG4 8XJ?

Council tax band information for SG4 8XJ is being updated.

How accessible are GP surgeries near SG4 8XJ?

GP surgery data for SG4 8XJ is being updated. Check NHS.uk for the latest.

What transport links are available near SG4 8XJ?

Transport data for SG4 8XJ is being updated.

Is SG4 8XJ a suitable area for families?

SG4 8XJ scores 50/100 for family suitability. Check school and crime sections above for detail.

What is the air quality like at SG4 8XJ?

Air quality data for SG4 8XJ is being updated.

How far is the nearest EV charging point from SG4 8XJ?

EV charging data for SG4 8XJ is being updated. Check Zap-Map for the latest.

Can I get full fibre broadband at SG4 8XJ?

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

Area suitability scores

SG4 8XJ

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

Codicote

District

North Hertfordshire

Region

Constituency

LSOA

E01023596

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