Contrary to popular belief, urban raccoons are also very sociable with one another, often living in the same spaces together. Possibly to impress their counterparts, city raccoons are also fearless when it comes to people. They'll build their dens in and around our houses, unless there's a dog present.
All this bravado inside their cozy dens probably doesn't hurt raccoon's rapid breeding practices. As we saw in Japan, in 40 years raccoons have gone from a non-native species to one that's overrun their forests with their expansion. That's a lot of baby making.