I see four on a regular basis depending on the route I take. One guy works pretty close to me in West Chester but I only see him if I drive the car and take the highway instead of the back roads.
I do see FJR's often other than those three. There seem to be a lot of them in the area. There is a gathering of bikes the third Sunday of the month in Ephrata, the next town over from me, where there will be 1,000-1,500 bikes and there are usually around 10 FJR's. Talked to John Ryan there one day before he did his Alaska-key west ride.
I think Philly and the Amish Country problem bring up the tourism count too.