More than 31,750 high school students applied to Duke this year, an increase of 131 from 2012.

The number of applications continues to reach a new record each year, rising 56 percent during the last five years. The number of applications to Trinity College of Arts and Sciences dipped 1 percent, while the number of applications to the Pratt School Engineering rose 7.8 percent.

"It's always gratifying to see the number of students who are interested in becoming part of the Duke community," Dean of Undergraduate Admissions Christoph Guttentag said in a press release.

California was the largest state source of applicants, accounting for nearly 4,000. The number of applications from international students grew, with China continuing to be the largest source of international student applications.

Last year, in response to the rising number of applications and overwhelmed review system, the admissions office changed the process to allow applications to be rejected before reaching a committee.