Average GPS coordinates for Merton Postcode location: 50.883, -4.1. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Merton on map:

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Listing cities & postcodes (1):
>> Devon, EX20 Merton, England, GPS coordinates: 50.8833,-4.1