For online colleges that offer online degrees/programs, Western Governors University has the largest number of online students (121,437) and Southern New Hampshire University has the second largest number of online students (96,912) based on academic year 2019-2020 college enrollment data.
Below table ranks and compares the Largest Online Colleges having the largest online student population. For the ranking, we include colleges with more than 50% online students who enrolled online exclusively.

Largest Online Colleges Comparison Table

RankCollege NameIn-State Tuition & FeesOut-of-State Tuition & FeesStudent Population (Total)Online Student PopulationNumber of ProgramsNumber of Online ProgramsStudents to Faculty Ratio
1Western Governors University
Salt Lake City, UT
$6,070$6,670121,437121,437636341 to 1
2Southern New Hampshire University
Manchester, NH
$31,136$9,650104,06896,91214810224 to 1
3University of Phoenix-Arizona
Phoenix, AZ
$11,330$9,55295,77794,47214613455 to 1
4Grand Canyon University
Phoenix, AZ
$17,002$17,18190,25370,2951269320 to 1
5Liberty University
Lynchburg, VA
$17,122$15,46079,15264,00621213718 to 1
6Walden University
Minneapolis, MN
$12,465$10,53450,36050,36012712718 to 1
7University of Maryland Global Campus
Adelphi, MD
$7,560$12,33660,60348,432868619 to 1
8American Public University System
Charles Town, WV
$6,880$7,36046,08846,08816016021 to 1
9Capella University
Minneapolis, MN
$14,250$14,14837,17137,17120520522 to 1
10Arizona State University-Skysong
Scottsdale, AZ
$10,818$10,92838,54037,00010310023 to 1
Average$12,638$14,0241,521,3841,327,520373118 to 1