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The most popular Iowa State University undergraduate major is Mechanical Engineering. Marketing/Marketing Management, General and Animal Sciences, General are other popular majors.
| Mechanical Engineering | 406 |
| Marketing/Marketing Management, General | 272 |
| Animal Sciences, General | 235 |
| Kinesiology and Exercise Science | 217 |
| Logistics, Materials, and Supply Chain Management | 214 |
| Finance, General | 210 |
| Psychology, General | 206 |
| Biology/Biological Sciences, General | 184 |
| Information Technology | 183 |
| Computer Software Engineering | 181 |
| Elementary Education and Teaching | 163 |
| Aerospace, Aeronautical and Astronautical/Space Engineering | 158 |
| Business Administration and Management, General | 151 |
| Accounting | 146 |
| Industrial Engineering | 132 |
| Chemical Engineering | 123 |
| Civil Engineering, General | 122 |
| Criminal Justice/Safety Studies | 115 |
| Computer Engineering, General | 114 |
| Ecology | 114 |
| Electrical and Electronics Engineering | 104 |
| Apparel and Textiles, General | 100 |
| Meeting and Event Planning | 96 |
| Computer Science | 95 |
| Agribusiness/Agricultural Business Operations | 87 |
| Engineering/Industrial Management | 86 |
| Farm/Farm and Ranch Management | 79 |
| Agricultural Engineering | 78 |
| Architectural and Building Sciences/Technology | 78 |
| Construction Engineering | 71 |
| Graphic Design | 70 |
| Liberal Arts and Sciences/Liberal Studies | 70 |
| Speech Communication and Rhetoric | 64 |
| Public Relations/Image Management | 63 |
| Human Development and Family Studies, General | 61 |
| Industrial and Product Design | 57 |
| Agricultural Teacher Education | 56 |
| Political Science and Government, General | 55 |
| Interior Design | 53 |
| Dietetics/Dietitian | 50 |
| Agronomy and Crop Science | 49 |
| Environmental Science | 49 |
| Mathematics, General | 48 |
| History, General | 44 |
| Materials Engineering | 44 |
| English Language and Literature, General | 43 |
| Genetics, General | 43 |
| Advertising | 41 |
| Design and Visual Communications, General | 39 |
| Education, General | 39 |
| Agricultural Mechanization, General | 37 |
| Statistics, General | 36 |
| Biochemistry | 35 |
| Entrepreneurship/Entrepreneurial Studies | 35 |
| Horticultural Science | 33 |
| Business Administration and Management, General | 32 |
| Chemistry, General | 32 |
| Food Science | 31 |
| Forest Sciences and Biology | 30 |
| Journalism | 30 |
| Marketing/Marketing Management, General | 28 |
| Microbiology, General | 28 |
| City/Urban, Community and Regional Planning | 27 |
| Linguistics | 26 |
| Sustainability Studies | 26 |
| Management Sciences and Quantitative Methods, Other | 25 |
| Sociology | 25 |
| Economics, General | 24 |
| Early Childhood Education and Teaching | 23 |
| Family and Community Services | 23 |
| Environmental Studies | 22 |
| Logistics, Materials, and Supply Chain Management | 21 |
| Nutrition Sciences | 21 |
| Romance Languages, Literatures, and Linguistics, General | 21 |
| International Agriculture | 20 |
| Anthropology | 18 |
| Hospitality Administration/Management, General | 18 |
| Mathematics, General | 18 |
| Meteorology | 18 |
| Criminal Justice/Safety Studies | 17 |
| Economics, General | 15 |
| Finance, General | 15 |
| Geology/Earth Science, General | 15 |
| Visual and Performing Arts, General | 15 |
| Computational Science | 14 |
| Family and Consumer Sciences/Human Sciences, General | 14 |
| Management Sciences and Quantitative Methods, Other | 14 |
| Physics, General | 14 |
| Romance Languages, Literatures, and Linguistics, General | 14 |
| Family Resource Management Studies, General | 13 |
| Music Teacher Education | 13 |
| Information Technology | 12 |
| Business/Managerial Economics | 11 |
| Cyber/Electronic Operations and Warfare | 11 |
| International Agriculture | 11 |
| International Business/Trade/Commerce | 11 |
| Psychology, General | 11 |
| Registered Nursing/Registered Nurse | 11 |
| Philosophy | 10 |
| Political Science and Government, General | 10 |
| Professional, Technical, Business, and Scientific Writing | 10 |
| Area Studies, Other | 9 |
| Biology/Biological Sciences, General | 9 |
| Medical Illustration/Medical Illustrator | 9 |
| Philosophy | 9 |
| Music, General | 8 |
| Engineering/Industrial Management | 7 |
| Environmental Science | 7 |
| Actuarial Science | 6 |
| Anthropology | 6 |
| English Language and Literature, General | 6 |
| Entrepreneurship/Entrepreneurial Studies | 6 |
| History, General | 6 |
| Sociology | 6 |
| Agronomy and Crop Science | 5 |
| Bioinformatics | 5 |
| Dairy Science | 5 |
| Environmental/Environmental Health Engineering | 5 |
| Professional, Technical, Business, and Scientific Writing | 5 |
| Public Administration | 5 |
| Accounting | 4 |
| Agricultural Mechanization, General | 4 |
| Ecology | 4 |
| Physics, General | 4 |
| Women’s Studies | 4 |
| Advertising | 3 |
| Multi-/Interdisciplinary Studies, Other | 3 |
| Statistics, General | 3 |
| Women’s Studies | 3 |
| Agricultural Teacher Education | 2 |
| Business/Managerial Economics | 2 |
| Child Development | 2 |
| City/Urban, Community and Regional Planning | 2 |
| Classics and Classical Languages, Literatures, and Linguistics, General | 2 |
| Computational Science | 2 |
| Design and Visual Communications, General | 2 |
| Genetics, General | 2 |
| Horticultural Science | 2 |
| Journalism | 2 |
| Meeting and Event Planning | 2 |
| Multi-/Interdisciplinary Studies, Other | 2 |
| Public Relations/Image Management | 2 |
| Animal Sciences, General | 1 |
| Athletic Training/Trainer | 1 |
| Biochemistry | 1 |
| Biophysics | 1 |
| Computer Science | 1 |
| Forest Sciences and Biology | 1 |
| Geology/Earth Science, General | 1 |
| Linguistics | 1 |
| Public Administration | 1 |
| Religion/Religious Studies | 1 |
| Speech Communication and Rhetoric | 1 |
The data on this website is sourced as public domain data from the most recent survey year of the National Center for Education Statistics’ College Navigator tool. That tool can be found at this link: https://nces.ed.gov/collegenavigator/. MyCollegeSelection encourages students to explore multiple resources as part of the research process in selecting the college of their dreams.