Average GPS coordinates for Riddle Postcode location: 42.939, -123.361. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Riddle on map:

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Listing cities & postcodes (1):
>> Oregon, 97469 Riddle, Douglas, GPS coordinates: 42.9389,-123.3612