Looking on the internet deeply has found these results:

On campus is the most popular phrase on the web.

In campus 1304,000 results on the web	On campus 155,700,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Jun 14, 2012 ... Why do we say he lives on campus but not he lives in campus? Technically we live in the boundaries of the campus. prepositions in Jun 2, 2005 ... I've been ticketed by the campus police when I parked an unregistered car on campus, but I have never been in campus. Although you go into�... You will need to do this before registering for classes in Campus Connect. Course Registration begins on the following dates: Spring 2016 semester registration�... on�... Jul 30, 2009 ... Hey everyone. How would you say this: "I'm on the campus" "I'm on campus" "I'm in campus" "I'm in the campus" I've heard people saying both�...	Everybody on campus drinks from sunup to sunup. I parked on campus and walked. It's the only place on campus that's completely private. Calvin's booked the best DJ on campus for the after party. All the best houses on campus. On campus, you pulled Coach Tappon into a meeting. Skye requested a moment alone on campus.

In campus

1304,000 results on the web

On campus

155,700,000 results on the web

More popular!

Jun 14, 2012 ... Why do we say he lives on campus but not he lives in campus? Technically we live in the boundaries of the campus. prepositions in
Jun 2, 2005 ... I've been ticketed by the campus police when I parked an unregistered car on campus, but I have never been in campus. Although you go into�...
You will need to do this before registering for classes in Campus Connect. Course Registration begins on the following dates: Spring 2016 semester registration�...
on�...
Jul 30, 2009 ... Hey everyone. How would you say this: "I'm on the campus" "I'm on campus" "I'm in campus" "I'm in the campus" I've heard people saying both�...