MoCo Dept of Liquor Control is licensed by the State. The liquor laws vary from state to state, but, in every case, the state government rules on whether or not the counties can be dry or wet or in between. So while the County is running the department and collecting the money, it's sanctioned by (and, ultimately, answers to and pays) Annapolis.
And everything in the DC area takes 45 minutes to get to because we have too many Asian drivers.
Edit: Actually, to get more technical, here's how it is. There are "License" (anyone can sell) versus "Control" States. Maryland is a Control State, though it chooses not to enforce this. However, that State Law allows for the creation of county control boards, of which MoCo's Dept of LC dates back to Prohibition.
Edit2: And that means, if Annapolis decides to become a "license" state, the MoCo Dept of LC will have to dissolve immediately.