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NN1 1NN
a defunct large user postcode in Northampton
This postcode was deleted in December 2022.
The nearest currently active postcodes are:
St. Giles Street NN1 1AF
St. Giles Street NN1 1JA
Castilian Street NN1 1JS
Derngate NN1 1TY
Castilian Street NN1 1JT
Derngate NN1 1TU
St. Giles Street NN1 1JB
Derngate NN1 1UB
Castilian Street NN1 1JX
Castilian Terrace NN1 1LE