Marin, 24 hours: 1,147 tests; 39 new confirmed positive cases, no deaths.
So, how is Marin County doing, compared to the rest of the Bay Area? Let's look at the average number of cases over the past week. And then make that new cases per million people: Marin has just 258k people: only Napa (135k) among the Bay Area counties has fewer. Santa Clara has 1.8 million.
The graph: Marin has doing rather worse than other counties, but the past week has seen a considerable improvement.
How this works: Marin has about 46 new cases / day (down from 70 /day two or so weeks ago), and a population of 251k, so it rates about 180 cases / day / million. San Francisco has about 137 cases per day. But its population is 871k, so it has an effective rate of 157 cases / day per million.
BA9C = the average across the nine Bay Area counties.
Sources: Marin HHS, SFist, LATimes github repository. Marin data adjusted to subtract San Quentin. Current as of 3rd August.