I think that the States has some of the most active folk dance communities in the world. With several traditional, and derived forms of dance.

In most cities one can find modern square dancing and often traditional square dancing, contra dancing and clogging. With modern square dancing alone, there are many more clubs than there are folk song clubs. Then there's a lot of other dancing which is not generally thought of as folk, such as country dancing, tap, ballet, ballroom and so on.

There are also groups that do 'borrowed' dancing such as morris, balkan, and other international dancing. And that's apart from the ethnic communities which do dances from their respective countries of origin.

Bert.