What's the student population at ASU?

ASU is ranked as the university with the largest enrollment of students (both undergrad and grad). There is a wikipedia page that has this ranking, and it says that ASU has a population of 60,000 students. Also, on google it says it has a population of 73,000 students (which is way too large). However, when you search on sites like College Board, College Data and US News, the student population according to them is 50,000 (30,000 undergrads and 10,000 grads). I don’t understand why some sites say it has the largest student population while others say it has a population of 50,000… Can someone explain?

According to ASU website, there are about 50000 students at the main campus, nearly 14000 online students, and about 18000 students at the other campuses.

For a few years prior to the 2013-14 school year ASU was reporting the sum of all students at all four campuses. The combined totals made it the largest in the nation. However, for the 2013-14 year, the Common Data Set is reporting only Tempe campus numbers. They don’t have the 2014-15 one posted yet but would be expected to be what @Parentof2014grad posted above.