For Jazz saxophone, I would recommend my Alma Mater, William Paterson University. I actually did a tour of the schools all over the East Coast, and found William Paterson to be more appealing than Eastman, New England Conservatory, Manhattan School of Music and the New School. I've also visited University of Miami, and although the social scene there is really cool, I still missed the feeling of being "near the action" in NYC.
William Paterson has a ton of successful musicians who come out of the school, costs eons less than the schools in NYC, and is very much focused on jamming with others as well as individual practice. I mean, why spend $100k on a degree in Jazz, seems kinda ridiculous when you think about it.
The other cool thing about WPU is that it's the most selective of the college jazz programs, as they only allow 60 people in, and these are 60 great musicians from all over the world, as opposed to 60 people who can afford a $100k tuition.
Sax-wise, the program is run by sax/woodwind player Dr. David Demsey, who's not only a great player, but also a great educator (big different between the two).
All of that said, the downside is that outside of the jazz program, the college itself is a crappy commuter scene with no social life to speak of. The surrounding area is suburban and boring, and some areas near the school such as Paterson and Passaic are almost apocalyptic-looking. However, those areas are very easy to avoid, and it is nice to be 30 mins from Manhattan.
So hopefully all of that helps!