Average GPS coordinates for Chelsea Postcode location: 51.488, -0.169. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Chelsea on map:

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Listing cities & postcodes (2):
>> London, SW10 Chelsea, England, GPS coordinates: 51.4876,-0.1694
>> London, SW3 Chelsea, England, GPS coordinates: 51.4876,-0.1694