I use World of Meter’s. I tried going directly to the CDC as a source, but they wanted a written paper about what I would be using the data for and about $6,000 for access to it.
World of Meters is good. There’s a map at Reuters that gets more behind on publishing data in some places than others.
https://graphics.reuters.com/HEALTH-CORONAVIRUS-USA/0100B5K8423/index.html
The following is good. Don’t let the big numbers or ethnic group turn you away. They use software to gather data that’s more directly from sources around the country. Their data is used by other offices including the CDC. It all comes out on other sites about three days later, give or take. It’s administered by Chinese-Americans.
https://coronavirus.1point3acres.com/en
I find some of the state sites to be best for those states, and most importantly, for more specific data that yields insights into the disease and how it spreads in subgroups. The data comes from counties and cities. Here’s one of those.
https://mophep.maps.arcgis.com/apps/MapSeries/index.html?appid=8e01a5d8d8bd4b4f85add006f9e14a9d