State boundaries are almost useless for analyzing the geographic distribution of anything.
See map below. This shows the average rating of the courses nearest to each point on the map. Specifically,
(Sum of: Rating x Holes / Distance^1.6) / (Sum of: Holes / Distance^1.6).
The highest is about 3.5 in Maine, the lowest about 2.5 in Montana.
Note there is not a lot of variation across the country (see scale at lower left). That is why I do not use Rating in my formula to calculate Service Levels.
Look at Tahoe area on that map! I think Tahoe wins it.:thmbup: