Patrick:
Even for those of us that do work in the Va counties- it would probably be unlikely we could answer the questions about "ALL" of the counties and cities- your link kind opf takes care of that info anyway- At the most I have covered 14 of the Northern Va counties/cities- but  don't know about the others- and I would use the resources you have to verify or contact what i was asked about.
I don't know of any independent that would be able to cover an entire state- maybe the companies that say the do work in every county/city in the state could offer you some help-but then they probably only contract out anyway. ( or worse- outsource!!)

Steve Meinecke
Franklin, Tn ( doing titles in the 4 NoVa counties of Arl,PW,Loud& Fx-all online)