Did you call UND campus and see if they have any dorm rooms available? I am not sure if they fill totally or not at that campus. I also thought first year students were required to be in the UND dorms. My sons friends lived in them that first year and said they were ok to stay in.
I would also suggest you look at a site called " UND Underground" it is used by the UND college kids to post things. I see several students on there are looking for roomies and some are near campus or in campus housing/apartments.
Apartaments, especially single apartments are very difficult to find and not inexpensive if you live alone.
Another site you could post on is called "apartmentfinder.com" , my daughter had luck finding roomies for this fall from posting on that site, so it's legit.