Average GPS coordinates for Winslow Postcode location: 42.484, -89.806. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Winslow on map:

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Listing cities & postcodes (1):
>> Illinois, 61089 Winslow, Stephenson, GPS coordinates: 42.4838,-89.806