Visit Little Hayattville Wyoming This Weekend For Cowboy Carnival Where the HECK is Hayattville Wyoming? The reason it is such a charming place it because most people on planet Earth, much less Wyoming have never heard of the place. But it is a cute little town. Get our free mobile app If you haven't experienced this before, make your plans to join us in friendly Hyattville for our 17th Annual Cowboy Carnival on Sunday, May 30th, during Memorial Day Weekend – family fun, entertainment, and a home-cooked BBQ Lunch! Funds raised from this event support our operating and maintenance expenses f...