Around the Boston area I think in like the past 10 years I've seen 3 actually driving around, not in driveways or shows, 1 white '70 Challenger, a Plum Crazy '70 Cuda and a '71 Cuda convertible (Actually was originally a Barracuda.).
You just don't see as many Mopars in general driving around here. Mostly GM/Ford stuff. '60's Mustangs, a Chevelle here and there, some Camaros but not a lot of muscle cars in general.