Postcode area SY21* (highlighted)
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Postcode SY21 Welshpool - Postcodes SY21* in the UK

27Postcodes
25Communities
2Nations

Postcode area SY21* contains 27 postcodes in the UK, spread across 2 nations. This postcode area covers places including Welshpool, Llanfair Caereinion, Castle Caereinion, Forden with Leighton and Trelystan and more. All postcodes beginning with SY21 are listed below.

FAQs about postcode area SY21

Which postcodes start with SY21?

In the UK, 27 postcodes start with SY21, including areas such as Welshpool, Llanfair Caereinion, Castle Caereinion. The full list is above.

What does postcode area SY21 cover?

SY21* is a UK postcode area containing 27 postcodes starting with SY21. This area spans 2 nations: Cymru / Wales, England.

Which nation is postcode SY21 in?

Postcode area SY21* spans 2 nations: Cymru / Wales (26 postcodes), England (3 postcodes) .

Where does postcode data for SY21* come from?

Data is from OpenStreetMap and may be incomplete. For authoritative information contact Royal Mail.

Parent areas: S* › SY* › SY2* › SY21*