Postcode 3257 Boundary Map
Leaflet | Tiles © Esri — Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012
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| Postcode | 3257 |
| Postcode Name | Ooltgensplaat |
| Province | South Holland |
| Municipality | Goeree-Overflakkee |
| Timezone | Central European Time (CET) |
| Adjacent Postcodes | 3256 3258 4797 |