De postcodes van Groningen zijn: 9700, 9701, 9702, 9703, 9704, 9711, 9712, 9713, 9714, 9715, 9716, 9717, 9718, 9721, 9722, 9723, 9724, 9725, 9726, 9727, 9728, 9731, 9732, 9733, 9734, 9735, 9736, 9737, 9738, 9741, 9742, 9743, 9744, 9745, 9746, 9747,

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