Colleges with march and beyond deadlines? I’d prefer California or the Northeast.
Here is a list but probably need to check each school for specifics. You best bet would be rolling admission schools.
https://www.petersons.com/college-search/list-rolling-admissions-schools.aspx
Here’s another list with upcoming deadlines: http://www.collegesimply.com/guides/application-deadlines/
Also, at some schools, there may be hidden extensions. Although Kalamazoo’s RD deadline is 1/15, my kid recently got an email inviting him to apply by 3/15. That may be because he expressed interested earlier (though he decided not to apply in the end), and/or because his scores are on the upper end of their norm, but it’s worth checking if a (not extremely selective) school has caught your interest.
http://blog.prepscholar.com/colleges-with-late-application-deadlines-complete-list
FWIW, these schools with March 01 or later deadlines make the USNWR top 100 National LACs or top 100 National Universities list:
New College of Florida
Hendrix
Lewis & Clark
Wabash (men only)
Colorado School of Mines
University of Iowa
(None of these are in CA or the NE)