K15: Covering the Country Challenge Mystery Cache

<<The cache is NOT at the posted coordinates. To find the true coords solve the simple puzzle below. This is a log only (BYOP)..>>
Ladies and gentlemen, welcome aboard.  Fasten your GPSr strap, place your logging device in the full solving position and prepare for takeoff on the KCI Geocache Challenge Express once again.

The log can be signed prior to meeting the challenge requirements, but the challenge cannot be claimed as a find until all requirements are met.  Please report any container issues to the CO for repair.  Any signatures on unauthorized replacement containers will be deleted by the CO.  The average D/T rating for these caches is 1.5/1.5. The higher rating takes into consideration the requirements for meeting these challenges.  Please be aware of the approach of other incoming flights on your taxiway and pull safely to the side to avoid collisions (as an added caution on this taxiway I recommend stopping along north side). Have fun and thanks for flying KCI! 

And now for the challenge:  

We love to travel for caching and see the sights along the way. And in doing this we try to stop and find a cache in every county we pass through. There are 3142 counties in the United States.  In order to log this cache you just need to find a cache in a fourth of those or 785. You may also count counties in foreign countries. You can find any style cache. Feel free to demonstrate how you qualify however you see fit. I recommend a map from a site or program like "My Geocaching Profile" or "GSAK- FindStatGen Macro" to upload an image of your US County numbers. Also there is a Challenge Checker #4510 on Project-GC.