On their site they have a map of counties and risk level. Some counties I know of that currently have few cases are labeled as very high risk. They had cases in the past but the numbers have fallen. This makes me question the usefulness of the presentation.
If you live in a county with a lot of people, county-level data is useless. If you don't live in a county with a lot of people, your risk is pretty low.
Look at the zip code based stats in a single large county. The variance is insanely large:
