Average GPS coordinates for Allison Postcode location: 42.762, -92.783. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Allison on map:

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Listing cities & postcodes (1):
>> Iowa, 50602 Allison, Butler, GPS coordinates: 42.7615,-92.783