About 6 percent of college undergraduates earn psychology degrees, according to the most recent data collected by the National Center for Education Statistics.

2. Social sciences and history: 156,900

3. Education: 105,500

4. Psychology: 85,600

6. Health professions and related clinical sciences: 80,700

7. Engineering and engineering technologies: 78,600

8. Communications, journalism, and related programs: 72,700

9. Biological and biomedical sciences: 64,600

10. Computer and information sciences: 54,100