User blog comment:NathanGMan/Phineas and Ferb Live In VIRGINIA?/@comment-961279-20120331170501

I believe the standard answer for where the city is located is "wherever the story requires it to be". However, if they put "Virginia" as the state in that episode (I watched it but it's not out on iTunes yet so I can get a screencap), then we can update our FAQ and the page on Danville to show its official status. It will still keep the "geographical anomalies", though.