Average GPS coordinates for Grantchester Postcode location: 52.187, 0.085. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Grantchester on map:

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Listing cities & postcodes (2):
>> Cambridgeshire, CB23 Grantchester, England, GPS coordinates: 52.1929,0.0791
>> Cambridgeshire, CB3 Grantchester, England, GPS coordinates: 52.1805,0.0914