This list is just examples from your local area.
BA’s near NYC
https://www.sarahlawrence.edu/undergraduate/arts/music/
https://music.vassar.edu/ensembles/jazz.html
http://music.bard.edu/about/ (not the conservatory)
http://jazz.columbia.edu/
BM’s in/near NYC
https://www.purchase.edu/academics/music/ and other SUNY’s and CUNY’s
https://www.ithaca.edu/music/performance/programs/jazz/
http://www.hartford.edu/hartt/programs/jml-jazz.aspx
http://www.msmnyc.edu/Instruction-Faculty/Academic-Departments/Jazz
https://www.newschool.edu/jazz/
http://www.steinhardt.nyu.edu/music/jazz
Carnegie Mellon has a keyboard performance BM but I didn’t see any jazz program. Wesleyan is well-known for world music/ethnomusicology http://www.wesleyan.edu/music/aboutmajor.html It is a BA and I don’t see jazz there either.