Is there a list or register of all the college radio stations in the United States?

Greetings frontman!

Metal Index has a listing that they divide up into three pages:

"College Radio Stations"
http://www.metalindex.com/collegeradio.html

http://www.metalindex.com/radio1.html
http://www.metalindex.com/radio2.html
http://www.metalindex.com/radio3.html

Relax Online lets you view listings one state at a time for free and
they have a downloadable database available for a fee:

"College Radio Database":
http://www.relaxonline.com/radio/
http://www.relaxonline.com/database/download.html

If you are interested in listings of college radio stations that are
on the web, you might want to look at the following site.  They also
have some links to other sites with listings, but unfortunately some
of the links appear to be dead:
http://www.collegeradio.org/

I hope this information is helpful.  If you would like for me to
clarify any part of my answer or further research your question,
please let me know before issuing a rate.  Thanks!

leep-ga

some search strategy used:
"college radio stations" + listing