Welsh Postcodes SY (Shrewsbury) Postcodes The SY postcode area, also known as the Shrewsbury postcode area, is a group of postal districts primarily around Shrewsbury, but also covering Aberystwyth, Bishop's Castle, Borth, Bow Street, Bucknell, Caersws, Church Stretton, Craven Arms, Ellesmere, Llanbrynmair, Llandinam, Llanfechain, Llanfyllin, Llanidloes, Llanon, Llanrhystud, Llansantffraid, Llanymynech, Ludlow, Lydbury North, Machynlleth, Malpas, Meifod, Montgomery, Newtown, Oswestry, Talybont, Tregaron, Welshpool, Whitchurch and Ystrad Meurig in England and Wales.
The approximate coverage of the postal districts:
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