I see the full body covering clothing here in Philadelphia and northern suburbs every now and then. The most common combination is a big fully body robe with long sleeves and a separate head scarf. The true Burqa, where the head covering is part of the robe is rare.

Head scarves worn with regular clothing are a lot more common.

Of course I'm also going by a lot more people walking through the Suburban station rail/subway interchange every day.

Jay