Average GPS coordinates for East China Postcode location: 42.777, -82.544. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). East China on map:

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Listing cities & postcodes (1):
>> Michigan, 48054 East China, St. Clair, GPS coordinates: 42.7769,-82.5437