An administrative county is like a big area that has its own leader(s) who help make decisions for the people who live there. Think of it like a big playground with lots of different toys and games. Each toy or game represents a different part of the county, like schools or hospitals or parks. The leader(s) make sure that everything is working properly in the playground and that everyone is playing nicely together. They also take care of things like making sure the playground is clean and fixing any broken toys or games. Basically, an administrative county helps take care of a big area and make it a nice place to live for everyone.