Average GPS coordinates for Sarnia Southwest Postcode location: 42.952, -82.331. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Sarnia Southwest on map:

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Listing cities & postcodes (1):
>> Ontario, N7T Sarnia Southwest, GPS coordinates: 42.9519,-82.3314