I've noticed the same and have wondered if this could be the result of a growing DePaul Prep, as Loyola has traditionally drawn students from all across the northside of the city.
DePaul Prep's enrollment of around 1,350 is double what it was when they moved to their new campus five years ago. While I think that Loyola's enrollment has remained stable, it wouldn't surprise me at all if some student athletes who, up until DePaul's resurgence would have gone to Loyola, are now choosing to study and participate in athletics closer to home at DePaul Prep.
I couldn't be happier for Pat Mahoney, the current DePaul Prep AD. Pat was the former Loyola AD who went to DePaul Prep after being made the fall guy for something out of his control at Loyola. I believe that the successful athletics program he has built since being hired at DPP in 2018 has been a key driver of enrollment growth for the school.