No communes in the strictest sense of the word, none that I know of. There is a farm in River Falls, Wisconsin not far east of the Twin Cities where people can live and work during the growing season. It is clothing-optional so if your spouse is body-shy, he/she can be dressed while you remain nude, or if you decide you have had too much sun or it is too chilly (hey this is Wisconsin we are talking about), no one will put you down for wrapping up while they remain nude. http://risingsunfarm.org/ http://heavytable.com/the-naturism-of-rising-sun-farm-in-river-falls-wi/
He either fat-fingered the keyboard and didn't see it, or "bc" is texting talk for something that neither one of us can make any sense of..
I have heard all my life about Canada, but I got as far north as Corbin, Kentucky and didn't see a sign of it, so I turned back for home a little disappointed...