The cache is located at: N AB CD.EFG W HI JK.LMN where N stands for North and W stands for West.
To solve the puzzle, substitute numbers from zip codes as described below. All zip codes refer to 5-digit U.S. postal zip codes. Latitude and longitude, as referenced below, are provided by the postal authority.
AB are the 1st and 2nd numbers of the zip code for standard addresses near 39.42 lat -84.21 long.
CD are the 3rd and 4th numbers of the zip code for standard addresses near 37.76 lat -77.47 long.
EFG are the 2nd, 3rd and 4th numbers of the zip code for standard addresses near 46.37 lat -98.48 long.
HI are the 1st and 2nd numbers of the zip code for standard addresses near 35.99 lat -119.99 long.
JK are the 4th and 5th numbers of the zip code for standard addresses near 43.67 lat -95.17 long.
LMN are the 1st, 2nd and 3rd numbers of the zip code for PO Box addresses near 34.15 lat -118.37 long.
You can check your answers for this puzzle on GeoChecker.com.