When weighing different colleges, economic diversity is an important factor, especially for prospective students from low-income families.

As part of U.S. News and World Report's 30th annual college rankings, the publication's "Economic Diversity Among the Top 25 Ranked Schools" list is a useful resource. Many major colleges and universities target bright young students from low-income families to expand their economic diversity.

Here are the top 10 schools (among U.S. News' top 25 national schools) with the most undergraduates receiving Pell Grants, federal financial aid that does not need to paid back.

1. University of California - Los Angeles

Location: Los Angeles, Calif.

School type: public

Acceptance rate: 18 percent

Undergrads with a Pell Grant: 39 percent

National rank: 23

2. University of California - Berkeley

Location: Berkeley, Calif.

School type: public

Acceptance rate: 17 percent

Undergrads with a Pell Grant: 36 percent

National rank: 20

3. Columbia University

Location: New York, N.Y.

School type: Ivy League

Acceptance rate: 7 percent

Undergrads with a Pell Grant: 30 percent

National rank: 4

4. University of Southern California

Location: Los Angeles, Calif.

School type: private

Acceptance rate: 18 percent

Undergrads with a Pell Grant: 24 percent

National rank: 25

5. Emory University

Location: Atlanta, Ga.

School type: private

Acceptance rate: 26 percent

Undergrads with a Pell Grant: 22 percent

National rank: 21

6. Harvard University

Location: Cambridge, Mass.

School type: Ivy League

Acceptance rate: 6 percent

Undergrads with a Pell Grant: 19 percent

National rank: 2

7. Massachusetts Institute of Technology

Location: Cambridge, Mass.

School type: private

Acceptance rate: 8 percent

Undergrads with a Pell Grant: 18 percent

National rank: 7

8. Rice University

Location: Houston, Texas

School type: private

Acceptance rate: 14 percent

Undergrads with a Pell Grant: 18 percent

National rank: 19

9. Cornell University

Location: Ithaca, N.Y.

School type: Ivy League

Acceptance rate: 14 percent

Undergrads with a Pell Grant: 17 percent

National rank: 15

10. University of Pennsylvania

Location: Philadelphia, Penn.

School type: Ivy League

Acceptance rate: 10 percent

Undergrads with a Pell Grant: 17 percent

National rank: 8