HS postcode district map, Stornoway
Supplier statuses last checked .
The HS postcode area covers 9 districts and 981 live postcodes, from HS1 to HS9. It is centred on Stornoway and also covers Ceathramh Meadhanach, Northton, Dalabrog, Bàgh a'Chaisteil and Baile a' Mhanaich.
Its districts are sparse, averaging 109 postcodes each.
Where the HS districts sit
2 districts are plotted without a label where labels would overlap; every one is in the table below.
Where HS sits
The whole area sits inside Na h-Eileanan an Iar, which is unusual at this size.
Every HS postcode is in Scotland. Water there is regulated by the Scottish Environment Protection Agency, and Temporary Use Bans under the Water Industry Act 1991 do not apply in Scotland at all.
Water supply across HS
All 9 HS districts are supplied by Scottish Water. That makes HS 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 HS area
HS2 is the largest district with 365 postcodes around Stornoway, and HS4 the smallest with 9. The area divides into 11 postcode sectors.
HS2 alone holds about 37 per cent of every postcode in HS,.
District by district: HS1 serves Stornoway, HS2 serves Stornoway, HS3 serves Northton, HS4 serves Sgalpaigh, HS5 serves An t-Ob, HS6 serves Ceathramh Meadhanach, HS7 serves Baile a' Mhanaich, HS8 serves Dalabrog and HS9 serves Bàgh a'Chaisteil.
Several districts share a settlement, which is a common source of confusion when a form rejects an address: HS1 and HS2 all point at Stornoway.
What borders HS
HS sits next to IV (Inverness) to the east, PH (Perth) to the south east, PA (Paisley) to the south, KW (Wick) to the north east and FK (Falkirk) to the south east.
Its neighbours run in 4 different directions, so HS is landlocked by other postcode areas on most sides.
HS districts, settlements and water supply
| District | Principal settlement | Water company | Hosepipe ban status |
|---|---|---|---|
| HS1 | Stornoway | Scottish Water | Check with your supplier |
| HS2 | Stornoway | Scottish Water | Check with your supplier |
| HS3 | Northton | Scottish Water | Check with your supplier |
| HS4 | Sgalpaigh | Scottish Water | Check with your supplier |
| HS5 | An t-Ob | Scottish Water | Check with your supplier |
| HS6 | Ceathramh Meadhanach | Scottish Water | Check with your supplier |
| HS7 | Baile a' Mhanaich | Scottish Water | Check with your supplier |
| HS8 | Dalabrog | Scottish Water | Check with your supplier |
| HS9 | Bàgh a'Chaisteil | 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 HS
No water company covering HS 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 |
|---|---|---|---|---|
| HS1 | Not published by Scottish Water. Check with your supplier. | |||
| HS2 | Not published by Scottish Water. Check with your supplier. | |||
| HS3 | Not published by Scottish Water. Check with your supplier. | |||
| HS4 | Not published by Scottish Water. Check with your supplier. | |||
| HS5 | Not published by Scottish Water. Check with your supplier. | |||
| HS6 | Not published by Scottish Water. Check with your supplier. | |||
| HS7 | Not published by Scottish Water. Check with your supplier. | |||
| HS8 | Not published by Scottish Water. Check with your supplier. | |||
| HS9 | 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 HS 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 HS area?
There are 9 HS postcode districts, running from HS1 to HS9, and they contain 981 live postcodes across 11 sectors.
What towns does the HS postcode area cover?
HS covers Stornoway, Ceathramh Meadhanach, Northton, Dalabrog, Bàgh a'Chaisteil and Baile a' Mhanaich. The area takes its name from Stornoway, and each district is listed with its settlement in the table on this page.
Which water company supplies HS postcodes?
Scottish Water supplies all 9 HS 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.
Why do HS1 and HS2 both say Stornoway?
HS1 and HS2 all serve Stornoway, 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 HS postcode map?
Yes. This page offers the HS 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.
How many postcode sectors are in HS?
HS contains 11 postcode sectors across its 9 districts. A sector is the district plus the first digit of the second half of the postcode, and it is the level a delivery round is actually planned around.