Average GPS coordinates for Harleston Postcode location: 52.401, 1.298. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Harleston on map:

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Listing cities & postcodes (1):
>> Norfolk, IP20 Harleston, England, GPS coordinates: 52.4012,1.2981