Pennsylvania State University (Penn State) is a public research university with its flagship campus in University Park, Pennsylvania. Founded in 1855, Penn State is one of the largest universities in the United States, with more than 100,000 students enrolled across its 24 campuses. The university offers more than 160 majors and has a strong focus on research, with more than $1 billion in research expenditures annually. Penn State is a member of the Big Ten Conference and has a strong athletic program, with 31 varsity sports teams. The university has a large alumni network, with more than 700,000 living alumni.