Okay kiddo, so have you ever heard of a county? It's a big area of land that has a bunch of smaller towns inside it. And every county has its own county town - this is like the capital, or the main town of the county.
You might be wondering, what makes the county town so special? Well, it's usually where a lot of important stuff happens, like the county government meetings and court hearings. It might also have some bigger buildings, like a courthouse or a library, that help people who live in the county.
So basically, a county town is the main town of a county where important stuff happens and it helps make life better for everyone who lives in that area. Pretty cool, huh?