Average GPS coordinates for Keswick Postcode location: 52.687, 1.366. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Keswick on map:

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Listing cities & postcodes (2):
>> Norfolk, NR12 Keswick, England, GPS coordinates: 52.7602,1.4722
>> Norfolk, NR4 Keswick, England, GPS coordinates: 52.613,1.2591