DL4 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 300 postcodes across 2 sectors in County Durham.
Full fibre
85%
Gigabit
85%
Superfast
96%
Postcodes
300
County Durham (DL4) achieves strong fibre deployment at 84.7% of postcodes, delivering gigabit capability at matching levels. The district ranks among County Durham's most digitally connected areas.
Broadband speeds in DL4
Share of DL4 premises by the fastest download speed available, averaged across all 300 postcodes in the district.
Full fibre infrastructure reaches 84.7% of postcodes in DL4, aligning closely with Darlington's fibre penetration and exceeding the UK average. Gigabit capability extends to the same 84.7%, indicating near-universal high-speed access across this postcode district. Superfast connectivity covers 95.7% of postcodes, ensuring even those without gigabit receive 30 Mbps minimum. No postcodes fall below the Universal Service Obligation floor, indicating detailed optical network coverage. Speed distribution is heavily weighted toward gigabit (84.7%), with only 11% in the superfast 30-300 Mbps band and negligible slow-speed outliers. This demonstrates mature, modern infrastructure.
Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.
Connectivity in detail
Below 10 Mbps USO
0%
Premises unable to get the 10 Mbps universal service minimum
Fixed wireless
0%
Premises that can use a fixed wireless access service
Broadband by sector
DL4 splits into 2 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.
| Sector | Postcodes | Superfast | Full fibre | Gigabit |
|---|---|---|---|---|
| DL4 1 | 149 | 96% | 83% | 83% |
| DL4 2 | 151 | 96% | 86% | 86% |
All DL4 1 postcodes (149)
All DL4 2 postcodes (151)
Best deals
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Living in County Durham
DL4's 84.7% full fibre coverage places it among County Durham's best-connected districts. Households moving here gain reliable gigabit access to the vast majority of postcodes, supporting work-from-home arrangements, streaming and multiple simultaneous connected users.
Remote worker score
50/100
Connectivity and amenities for home working
Family score
50/100
Schools, safety and family amenities
Value score
50/100
What you get for the local price level
DL4 broadband FAQs
How does DL4 compare to other nearby postcode districts?
At 84.7% full fibre, DL4 ranks high. It exceeds the UK average of 69% and matches many urban centres' fibre penetration, reflecting strong network investment.
What percentage of DL4 postcodes have gigabit speeds?
84.7% of postcodes can access gigabit capability. The remaining 11% receive superfast speeds from older infrastructure but still meet the standard 30 Mbps minimum.
Are there many postcodes still on older copper networks?
Only 11% of postcodes rely on copper or hybrid superfast delivery. Fibre dominates DL4, meaning copper infrastructure is being phased out or serves a diminishing minority.
Would DL4 be suitable for a tech startup requiring reliable broadband?
Yes. With 84.7% gigabit availability, most premises support rapid data transfers, cloud services and video conferencing. A small minority in the superfast band would suffice only for bandwidth-light operations.
Neighbouring districts
Check your exact postcode
Every postcode in DL4 has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.
Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources