This is my new favorite website. It gets user input to find spheres of influence for sports teams, and for major urban areas. It has confirmed what I had thought though, right about where Garden City is (actually closer to Dodge) is the boundary between Broncos, Chiefs, and Cowboys fans. And it was evident growing up there. I haven’t looked at the NHL map yet, but I bet the Avs own about half of the US.
This site is defiantly worth a checking out, especially if your name is Lance.