Answer by Jasper Kuria · Apr 11 at 01:16 PM
One good source for this kind of information is Survata. From their about page: Survata is the simplest way to conduct high quality survey research. We serve clients ranging from Fortune 100 companies to small businesses, and everyone in between
Answer by johnsechrest · Apr 11 at 01:17 PM
The public library is also a great under-utilized resource. In Seattle I would encourage you to go to Jay Lyman at the Seattle Public Library and get a tour of the resources they have for business data.
Specifically the census and the business registry resources. There are many databases available to you online through your library membership. He is a research Librarian that can help you find resources for specific questions.