Some sugar-free bakeries are Just Delicious Bakery, located in Clackamas, Oregon, and Hill and Valley Premium Bakery in Rock Island, Illinois. Just Delicious Bakery specializes in baked goods that are suitable for diabetics. There are also many online sugar-free bakeries, such as SugarlessDelite.com, ChatilasBakery.com, SerendipitiesSweets.com and HillAndValley.net.
Whole Foods Market grocery stores carry sugar-free baked goods in their traditional bakeries. The stores carry baked goods made by Whole Foods as well as carry items from outside bakeries.
A good resource for finding local sugar-free bakeries is Yelp. This website allows users to enter locations and keywords such as "sugar-free bakery," and it returns a list of local businesses that match the search terms.