Average GPS coordinates for Oakdale Postcode location: 41.643, -91.6. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Oakdale on map:

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Listing cities & postcodes (1):
>> Iowa, 52319 Oakdale, Johnson, GPS coordinates: 41.6427,-91.6