Those that know and care, take part in whatever way they are able. It is a holiday, but not one of the holiday's where schools, banks, & post offices close. And the media coverage is short at best, so the effect is most don't even know of it's existance.

However, there are cities that celebrate.. Like NY, here in Franklin, NC, etc.. and some of the cities mentioned above in other posts.

Unfortunately, it's not a big enough holiday where the masses are capable of having the day off from work in order to participate in the fashion as to what is truly needed.

Then there are the employers who would send employees home for wearing a kilt to work on Tartan Day, because they wouldn't recognize it as an actual holiday.

So, there is still alot that needs to be done... People like us, clan Societies, and other Scottish societies are the major participants. It's just going to take time, and we all have to be both patient and persistent.