With Datawrapper you can create zoomable, responsive maps of USA › Counties (2018) (and over 2500 other regions) for free. They're zoomable, responsive, and interactive. Learn more about the maps you can create with Datawrapper here.
Click on the button to create a map like this that you can embed on your website. You can add data to the USA › Counties (2018) map using the following keys: