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SG6 3DX
a defunct large user postcode in Letchworth Garden, North Hertfordshire, Hertfordshire
This postcode was deleted in July 1995.
The nearest currently active postcodes are:
Eastcheap SG6 3DD
Gernon Road SG6 3DU
Commerce Way SG6 3DW
Central Approach SG6 3DL
Central Approach SG6 3DJ
Central Approach SG6 3DP
Gernon Road SG6 3HL
Eastcheap SG6 3DA
Gernon Road SG6 9SA
Arena Parade SG6 3BY