what demographic does my art sell too?

Have you looked into sites like Etsy. Sounds strange I know but Etsy has some crazy cool stuff and a lot of people visit the site. Lots of art on Etsy. Do you live near any clubs or even coffee shops that might be willing to put your art up for display/sale? I know the local coffee shop here has very eclectic artwork and if it's a coffee shop where they allow musicians to play you may find your work selling pretty fast.