For online colleges that offer online degrees/programs, Western Governors University has the largest number of online students (147,866) and Southern New Hampshire University has the second largest number of online students (128,360) 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$6,670147,866147,866636342 to 1
2Southern New Hampshire University
Manchester, NH
$31,136$9,650134,345128,36014810221 to 1
3University of Phoenix-Arizona
Phoenix, AZ
$11,330$9,55289,76389,35314613477 to 1
4Grand Canyon University
Phoenix, AZ
$17,002$17,181103,42785,0871269321 to 1
5Liberty University
Lynchburg, VA
$17,122$15,46093,34979,16721213717 to 1
6El Centro College
Dallas, TX
$4,050$6,00074,78166,45163-27 to 1
7Arizona State University-Skysong
Scottsdale, AZ
$10,818$10,92853,99353,99310310026 to 1
8University of Central Florida
Orlando, FL
$6,368$22,46771,88153,8151944731 to 1
9American Public University System
Charles Town, WV
$6,880$7,36050,04750,04716016023 to 1
10Walden University
Minneapolis, MN
$12,465$10,53449,69549,69512712719 to 1
Average$12,834$17,0277,612,4536,226,864641816 to 1