📮Abergynolwyn · ZIP Codes21 results

UK postcodes combine letters and digits, e.g. SW1A 1AA, split into outward and inward parts. Managed by Royal Mail, they can identify streets or even single addresses.

For cross-border e-commerce sellers, always verify the recipient's address and ZIP code before shipping, and check whether the destination is in a remote/outlying postal area — delivery costs can differ dramatically.