I am unsure whether there are any tools or python libraries available where I can highlight or circle a region on a map and it return the counties within the circle or region as text.

Any solutions?

CodePudding user response：

You could check if each county gets in collision with the circle drawn, using its radius and center. If the county is in collision, then it is (at least partially) inside the circle.

CodePudding user response：

This may be something like what you're looking for. But it requires clicks instead of circling.