Welcome to Fremont County, Wyoming, which is some 6.15% larger than the entire State of New Jersey, and ALMOST as large as Connecticut, Delaware, and Vermont combined. We sometimes refer to our county as "County 10", designated by the "10" prefix on vehicle license plates, and indicating that our population ranks tenth of Wyoming's 23 counties, just over 40,000 happy souls in 2010.
Cache should be easily accessible off the road, although we do get a LOT of snow at times, which will probably bury the cache part of the year. If you're coming from the east, there's a bathroom at the Split Rock area, and one at Sweetwater Station, but absolutely nothing else until you reach Lander.