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SY21 1BB
a defunct large user postcode in Welshpool, Powys
This postcode was deleted in January 2019.
The nearest currently active postcodes are:
SY21 1BG
SY21 1BF
SY21 1BH
SY21 7WW
SY21 8WU
SY21 8WY
Severn Street SY21 7AF
SY21 1BD
SY21 1BE
SY21 8XQ