A quick check using my home Zip code turned up 80 E85 stations from NEVC and almost twice that (157) on Drive Flex Fuel within a 200 mile range. DFF allows you to limit your search to 10 miles (or 25 or other limits) of your home while the NEVC site only allows you to search for stations within 200 miles of your home (and how useful is that?). From the looks of it, it doesn't seem that DFF discriminates between public and industrial sites. Cottrell wrote to AutoblogGreen to say that he updates the station list every month and has all states and zip codes listed.
[Source: Drive Flex Fuel]