Average GPS coordinates for Decorah Postcode location: 43.323, -91.794. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Decorah on map:

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Listing cities & postcodes (1):
>> Iowa, 52101 Decorah, Winneshiek, GPS coordinates: 43.3227,-91.7939