Average GPS coordinates for Portage Postcode location: 42.188, -85.6. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Portage on map:

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Listing cities & postcodes (3):
>> Michigan, 49002 Portage, Kalamazoo, GPS coordinates: 42.1938,-85.5639
>> Michigan, 49024 Portage, Kalamazoo, GPS coordinates: 42.1974,-85.6194
>> Michigan, 49081 Portage, Kalamazoo, GPS coordinates: 42.1718,-85.6178