DL15 postcode area guide — County Durham

Where is DL15?

Broadband & internet speeds in DL15

Strong coverage

Broadband availability in the DL15 postcode district (County Durham) is Strong — superfast is near-universal and gigabit is rolling out. Across the 704 postcodes Ofcom measures in DL15, superfast broadband (30 Mbit/s or faster) reaches 91.3% of premises and gigabit-capable lines are available to 72.5%.

Around 0.3% of premises in DL15 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.

Sample postcodes in DL15

Run a speed test to see what you're actually getting, or check your exact postcode.

Mobile signal around County Durham

Ofcom's coverage model for the wider County Durham district (269,279 premises):

Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.

Crime in DL15

Police recorded 106 incidents within about a mile of the centre of DL15 in May 2026 (latest published street-level data). The breakdown:

Raw counts favour busy town centres — a high street with shops and nightlife records more incidents than a residential cul-de-sac. Source: police.uk open data (point sample around the district centroid).

House prices in DL15

Based on 265 sales registered with HM Land Registry in the last 12 months, the median sold price in DL15 is £112,500, up 11.4% on the previous year (£101,000).

Latest recorded sales in DL15

Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.

Who lives here? County Durham demographics

Census 2021 figures for the wider County Durham district (522,068 residents, 234,764 households):

Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.

Schools in and around DL15

Source: DfE Get Information about Schools (England & Wales). Check Ofsted report cards for inspection detail — headline one-word grades were retired in 2024.

Food hygiene ratings in DL15

166 rated food businesses operate in DL15. 114 hold the top rating of 5, 31 are rated 4, and 2 are rated 2 or below.

Among the 5-rated: A Burnhams Fruiters, Adam's Pizzeria, Aldi, Amis Pizzeria, Bags-O-Craft.

Source: Food Standards Agency, food hygiene ratings (FHRS) open data.

Energy performance (EPC) in DL15

From a sample of 349 Energy Performance Certificates across 10 DL15 postcodes, the most common rating is band D (average band D). 37% of sampled homes are rated C or better.

Source: MHCLG Energy Performance of Buildings Data (England & Wales), sampled at postcode level and refreshed monthly. Individual certificates are on each postcode’s page.

Phone area codes for County Durham

Landlines around DL15 typically use:

Had a call from an unknown number? Use our free UK phone number checker to see who called.

What's it like living in DL15?

Postcodes in DL15

Neighbouring districts

All Darlington (DL) postcode districts ›

Frequently asked questions

Sources: HM Land Registry Price Paid Data, police.uk street-level crime, Ofcom Connected Nations, ONS Census 2021, DfE Get Information about Schools, Food Standards Agency FHRS — all © Crown copyright, licensed under the Open Government Licence v3.0. Figures are area aggregates; individual addresses vary. Energy performance (EPC) data will be added when our Open Data Communities registration is approved.