yellow = 1-5
orange = 6-15
red = 16-37
dark red = 38-79
blue = 80+
This map is not telling a proper story. Not all counties are the same size or have the same population. So LA is blue because you range stops at 80 but has 2.5 million people, while Penobscot County in Maine is yellow with less than 5 cases. per capita numbers is more important, but they are infinitesimal.
Maine has 57 cases in a population of 1.3 million for a case rate of 0.0043%. Yes, 43 hundreds of a percent.