DG postcode district map, Dumfries
Supplier statuses last checked .
The DG postcode area covers 15 districts and 6,912 live postcodes, from DG1 to DG16. It is centred on Dumfries and also covers Newton Stewart, Stranraer, Gatehouse of Fleet, Lockerbie and Annan.
Districts here average 461 postcodes.
Where the DG districts sit
1 district is plotted without a label where labels would overlap; every one is in the table below.
Where DG sits
The whole area sits inside Dumfries and Galloway, which is unusual at this size.
DG spans the border: 6,907 of its postcodes are in Scotland and 5 in England, about 0 per cent. That matters here in a way it does not on a plain postcode map, because water is regulated separately either side of it. In England the Environment Agency oversees drought and abstraction; in Wales it is Natural Resources Wales, and restrictions are set by whichever company supplies the address, not by which country it sits in.
Water supply across DG
All 15 DG districts are supplied by Scottish Water. That makes DG simple in a way many areas are not: one company, one set of rules, one status to check.
We are re-checking Scottish Water's status. It was last confirmed on 17 August 2026 as no restrictions, and until it is confirmed again this page does not assert a current position for it.
The shape of the DG area
DG1 is the largest district with 1,065 postcodes around Dumfries, and DG14 the smallest with 76. The area divides into 42 postcode sectors.
The numbering is not continuous. DG runs up to 16 but has only 15 districts, so 1 number is unused:.
Several districts share a settlement, which is a common source of confusion when a form rejects an address: DG1 and DG2 all point at Dumfries, DG3 and DG4 all point at Sanquhar and DG13 and DG14 all point at Langholm.
What borders DG
DG sits next to KA (Kilmarnock) to the north west, ML (Motherwell) to the north, CA (Carlisle) to the south east, G (Glasgow) to the north and EH (Edinburgh) to the north east.
Its neighbours run in 4 different directions, so DG is landlocked by other postcode areas on most sides.
DG districts, settlements and water supply
| District | Principal settlement | Water company | Hosepipe ban status |
|---|---|---|---|
| DG1 | Dumfries | Scottish Water | Check with your supplier |
| DG2 | Dumfries | Scottish Water | Check with your supplier |
| DG3 | Sanquhar | Scottish Water | Check with your supplier |
| DG4 | Sanquhar | Scottish Water | Check with your supplier |
| DG5 | Dalbeattie | Scottish Water | Check with your supplier |
| DG6 | Kirkcudbright | Scottish Water | Check with your supplier |
| DG7 | Gatehouse of Fleet | Scottish Water | Check with your supplier |
| DG8 | Newton Stewart | Scottish Water | Check with your supplier |
| DG9 | Stranraer | Scottish Water | Check with your supplier |
| DG10 | Moffat | Scottish Water | Check with your supplier |
| DG11 | Lockerbie | Scottish Water | Check with your supplier |
| DG12 | Annan | Scottish Water | Check with your supplier |
| DG13 | Langholm | Scottish Water | Check with your supplier |
| DG14 | Langholm | Scottish Water | Check with your supplier |
| DG16 | Longtown | Scottish Water | Check with your supplier |
Principal settlement is the town or city each district sits in or nearest to, derived from OS Open Names. It is not the Royal Mail post town, which is licensed data and not published openly. Status is resolved live from each company’s own notice.
Water hardness in DG
No water company covering DG publishes hardness figures as open data. The gap is named per district below so you know who to ask.
| District | Hardness | As published | Supply zone | Published by |
|---|---|---|---|---|
| DG1 | Not published by Scottish Water. Check with your supplier. | |||
| DG2 | Not published by Scottish Water. Check with your supplier. | |||
| DG3 | Not published by Scottish Water. Check with your supplier. | |||
| DG4 | Not published by Scottish Water. Check with your supplier. | |||
| DG5 | Not published by Scottish Water. Check with your supplier. | |||
| DG6 | Not published by Scottish Water. Check with your supplier. | |||
| DG7 | Not published by Scottish Water. Check with your supplier. | |||
| DG8 | Not published by Scottish Water. Check with your supplier. | |||
| DG9 | Not published by Scottish Water. Check with your supplier. | |||
| DG10 | Not published by Scottish Water. Check with your supplier. | |||
| DG11 | Not published by Scottish Water. Check with your supplier. | |||
| DG12 | Not published by Scottish Water. Check with your supplier. | |||
| DG13 | Not published by Scottish Water. Check with your supplier. | |||
| DG14 | Not published by Scottish Water. Check with your supplier. | |||
| DG16 | Not published by Scottish Water. Check with your supplier. | |||
Hardness is published per census area, not per postcode, so these figures characterise a district rather than measuring one address. They are a scale and taste matter, not a safety one. Hardness data version wessex-water@2022-2025+yorkshire-water@2026.
Download the DG data
No signup, no email wall. GeoJSON carries the district points, the supplier and the live status, so it can be dropped straight into a map.
District positions are averaged postcode centroids from OS Code-Point Open. They show roughly where a district sits, not where its boundary runs, and are not legal boundaries.
Frequently asked questions
How many postcode districts are in the DG area?
There are 15 DG postcode districts, running from DG1 to DG16, and they contain 6,912 live postcodes across 42 sectors.
What towns does the DG postcode area cover?
DG covers Dumfries, Newton Stewart, Stranraer, Gatehouse of Fleet, Lockerbie and Annan. The area takes its name from Dumfries, and each district is listed with its settlement in the table on this page.
Which water company supplies DG postcodes?
Scottish Water supplies all 15 DG districts. Supply boundaries follow the pipe network rather than postcode geography, so confirm against your water bill if you are near the edge of the area.
Is the DG postcode area in Scotland or England?
Both. 6,907 DG postcodes are in Scotland and 5 are in England. The postcode does not decide which applies: your water company does, and water is regulated separately either side of the border.
Why do DG1 and DG2 both say Dumfries?
DG1 and DG2 all serve Dumfries, covering different parts of it. A single town routinely needs more than one postcode district once it passes a few thousand delivery points, so this is normal rather than an error in an address.
Can I download a free DG postcode map?
Yes. This page offers the DG districts as GeoJSON, CSV and SVG, free and with no signup or email address required. The GeoJSON carries each district's position, its water company and its current restriction status, so it can be dropped straight into a mapping tool.
Why is there no DG15 postcode district?
DG15 is not in use. Postcode districts are allocated as sorting requirements change rather than numbered straight through, and a code that is retired or never brought into service is not reissued, so gaps in the sequence are normal.