Sydney University is pressing for a new train station on a planned metro line between the city's CBD and Parramatta to be built at its Camperdown campus in the inner west, arguing it will be crucial to helping transport 30,000 students a day.

Having lost out to Waterloo just over a year ago as the site for a station on a new metro line from Chatswood in the north to Sydenham in the south, the sandstone university has now suggested a site near Oval No.2 for a station on the so-called Sydney Metro West line, which the NSW government committed to late last year.

The university has also highlighted the fact that a station near Oval No.2 would be within walking distance of Royal Prince Alfred Hospital.

While the government has named the Bays Precinct around Rozelle as a site for a new station, the university insists one built on or near its campus is viable despite another in close proximity further north.