Illinois County, Virginia

Okay kiddo, so you know how the United States is made up of 50 states, right? Well, each state is divided into smaller parts called counties. Illinois is one of those states and it has many counties within it, meaning Illinois is divided into smaller sections for easier management. Virginia is also a state and it has its own counties too. So basically, Illinois County doesn't exist because Illinois itself is already made up of many counties. Hope that makes sense!