Average GPS coordinates for Foss Postcode location: 35.374, -99.153. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Foss on map:

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Listing cities & postcodes (1):
>> Oklahoma, 73647 Foss, Washita, GPS coordinates: 35.3736,-99.1526