DL12 postcode district: Barnard Castle and around
DL12 is a postcode district in England, with 726 postcodes in use in 4 sectors. It has postcodes in Barnard Castle. It is split between 3 councils: County Durham (723 postcodes), North Yorkshire (2) and Westmorland and Furness (1).
- Postcodes in use
- 726
- Sectors
- 4
- Councils
- 3 councils
- Places
- Barnard Castle
Source: ONS Postcode Directory, August 2026, loaded 20 October 2026.
Every postcode in DL12, by gigabit broadband
- No home or business can get gigabit: 148
- Some can get gigabit: 155
- Every home and business can get gigabit: 414
- Ofcom gives no figure: 9
- Outline: where 5 or more postcodes without gigabit lie together
Of the 726 postcodes in DL12 that ONS places, 148 have no home or business that can get gigabit, 155 have some that can, 414 can all get it and 9 have no Ofcom figure.
Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. A dashed outline shows where 5 or more lie within 210 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.
The middle of its postcodes: latitude 54.5720, longitude -1.9849. Open this area on OpenStreetMap
Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Ofcom Connected Nations, Connected Nations, Spring 2026; roads, rivers and built-up areas: Ordnance Survey open maps. Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre.
Postcodes without gigabit
148 postcodes here have no gigabit. These are the 12 first in postcode order.
Where the postcodes without gigabit lie together
- 95 postcodes without gigabit, outlined on the map. DL12 8JJ, is the one nearest the middle of them.
What broadband can you get in DL12?
Ofcom reports on 717 of the 726 postcodes in DL12. At 414 of them every home and business can get gigabit broadband, and at 30 some cannot get decent broadband (10 Mbit/s).
Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.
Check one address on Ofcom's checkerSource: Ofcom Connected Nations, Connected Nations, Spring 2026, data for January 2026.
Is DL12 at risk of flooding?
56 of the 726 postcodes in DL12 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 58 homes and businesses in an area at high or medium risk.
High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.
Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.
Source: Environment Agency flood risk, published 6 July 2026.
What do homes sell for in DL12?
Homes in DL12 sold for a typical £225,000 in the 12 months to September 2026, across 153 sales, down 13.5% on the 12 months before, HM Land Registry's figures show.
- Detached £357,000 43 sales
- Semi-detached £225,000 51 sales
- Terraced £180,000 49 sales
- Flat or maisonette £117,000 10 sales
Each bar is that kind's typical price, against the most expensive kind here.
Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.
Source: HM Land Registry Price Paid Data, files dated 28 October 2026.
Postcodes in DL12
Pick a sector, then a postcode. A sector is the district plus the next digit.
UK postcode format explainedPlaces in DL12
Towns and villages with postcodes in DL12, and how many each has here.
Who covers DL12
How many of the district's postcodes in use fall under each council, constituency and police force area.
Councils
What council am I in?Constituencies
- Bishop Auckland723
- Richmond and Northallerton2
- Westmorland and Lonsdale1
Police force areas
- Durham723
- North Yorkshire2
- Cumbria1
Next to DL12
"Next to" is by number: the districts before and after DL12 in the DL area.
Check a postcode
Where the facts on this page come from
- Office for National Statistics: ONS Postcode Directory
- Ofcom Connected Nations
- Environment Agency flood risk
- HM Land Registry Price Paid Data
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.
Licence: Open Government Licence v3.0.
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