SY17 postcode district

Postcodes and sectors

178 of the district's 206 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there. The live postcodes centre on 52.51702, -3.46973, which locates the district, not a building.

Companies registered in SY17

Companies House lists 154 companies with a registered office in SY17; none of them at an address shared by 25 or more companies (1 October 2026 snapshot). 25 is the count at which the address lookup reports a company cluster.

Places OS Open Names lists for SY17

• Powys
• Wales
• Caersws
• Llandinam
• Carno
• Trefeglwys
• Llanwnog
• Clatter
• Llawr-y-glyn
• Pontdolgoch
• Little London
• Trewythen
• Glanhanog
• Wig
• Penstrowed

Roads filed under SY17

Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.

• Ael-y-Bryn
• Black Bridge Lane
• Bridge Street
• Cae Garreg
• Carno Road
• Ceiriog Walk
• Chapel Fields
• Chapel Street
• Clos Hen Dŷ
• Clos yr Efail
• Cwrt Swswen
• Ffordd Dol-Llin
• Gerddi Cledan
• Glan Cerniog
• Llys Bryngolwg
• Llys Rhufain
• Long Length
• Lon Talgarth
• Maes-y-Llan
• Maes-y-Neuadd
• Maes-yr-Eglwys
• Maesawelon
• Maes Glas
• Maes Llwyncelyn
• Maes Trannon
• Maes y Cwm
• Maes y Dafarn
• Maesyddinas
• Maesydre
• Main Street
• Manthrig Lane
• Moat Lane
• New Street
• Old Barn Close
• Pentre'r Felin
• Plas Trannon
• Post Office Lane
• Severn Street
• Station Road
• Stokes Lone
• Tan-y-Castell
• Trefeglwys Road
• Tremynoddfa
• Ty Gwyn Road
• Waen Lane
• Wig Lane
• A470
• A489
• B4569

Check an address in SY17

Check an address in SY17

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=SY17" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about SY17

What does an SY17 postcode tell you?

That the address lies in the SY17 district of the SY (Shrewsbury) postcode area, and the place OS Open Names most often lists first for its postcodes is Powys. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 178 live postcodes.

Where the counts come from

• ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
• os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
• uk-companies-house · version 2026-10-01 · Companies House free company data product, Open Government Licence v3.0

What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.

Data synced on 2026-11-01: the newest version among the datasets listed above.

Districts nearest SY17

• SY1810.0 km
• SY1610.7 km
• SY1913.1 km
• SY1523.1 km
• LD623.1 km
• SY2123.7 km
• SY2026.0 km
• LD129.3 km
• LD731.6 km
• SY932.5 km
• SY2232.8 km
• SY2437.6 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids