[manacit]

The university that I went to has ~40,000 students between undergraduate and graduate students, and an additional ~20,000 faculty, staff and other people there at any given day. There were thousands of people living in student housing on campus and tons of sporting events that could draw crowds near the six figures.

They have a deputized police force of people available 24/7 for things as mundane as walking people home safely and as complicated as enforcing local/state/federal laws. They are sworn officers that have an agreement with the city they operate in that allows their jurisdiction to bleed into the city proper.

I never interacted with them when I was a student, but it's not out of this world to have a small police force for the campus - there were more people there on the average weekday than the city that I grew up in, which also had it's own police force.