The student population at Colby College is 2,412 (all undergraduate). The number of students has increased by 555 (29.89%) over the past decade.
The average student population over the last 11 years is 2,107 where 2,412 students are attending the school for the academic year 2024-2025.
Total enrollment fluctuated between 2016 and 2025, with 8 year-over-year increases and 1 decrease. It peaked at 2,412 students in 2025 and was lowest at 1,857 in 2016. Overall, enrollment rose from 1,857 to 2,412 students, a net gain of 555 (29.9%).
The following table and chart illustrate the changes in student population by gender at Colby College since 2015.
| Year | Total | Men | Women |
|---|---|---|---|
| 2015-16 | 1,857 | 887 | 970 |
| 2016-17 | 1,879 22 | 894 7 | 985 15 |
| 2017-18 | 1,917 38 | 917 23 | 1,000 15 |
| 2018-19 | 2,000 83 | 951 34 | 1,049 49 |
| 2019-20 | 2,003 3 | 928 -23 | 1,075 26 |
| 2020-21 | 2,155 152 | 1,022 94 | 1,133 58 |
| 2021-22 | 2,262 107 | 1,065 43 | 1,197 64 |
| 2022-23 | 2,299 37 | 1,094 29 | 1,205 8 |
| 2023-24 | 2,284 -15 | 1,115 21 | 1,169 -36 |
| 2024-25 | 2,412 128 | 1,178 63 | 1,234 65 |
| Average | 2,107 | 1,005 | 1,102 |
The percentage of white students is 54.77%. The percentage was 61.60% 10 years ago and Colby still has a high percentage of white students. 10.20% of enrolled students is Asian and 4.77% is black students. Hispanic students comprise 8.37% of the student body.
Over the past 10 years, the racial composition has shifted. The percentage of white students decreased from 61.60% to 54.77%. Asian enrollment grew from 6.19% to 10.20%. Black student enrollment increased from 2.64% to 4.77%. Hispanic student representation expanded from 6.41% to 8.37%.
The overall racial diversity, measured by the Census Bureau Diversity Index, is 0.6753 which indicates that moderately diverse. This increased from 0.6093 a decade ago, suggesting that racial diversity has improved.
The following table and chart illustrate the student population trends by race/ethnicity at Colby College over the past 11 years (2015-2025).
| Year | American Indian or Native American | Asian | Black | Hispanic | Native Hawaiian or Other Pacific Islander | White | Two or More Races |
|---|---|---|---|---|---|---|---|
| 2015-16 | 5 | 115 | 49 | 119 | 2 | 1,144 | 94 |
| 2016-17 | 6 | 112 | 70 | 132 | 3 | 1,161 | 85 |
| 2017-18 | 8 | 137 | 75 | 140 | 3 | 1,223 | 88 |
| 2018-19 | 5 | 156 | 83 | 149 | 5 | 1,250 | 102 |
| 2019-20 | 6 | 164 | 100 | 167 | 4 | 1,212 | 109 |
| 2020-21 | 4 | 199 | 101 | 169 | 1 | 1,308 | 121 |
| 2021-22 | 5 | 231 | 118 | 185 | 1 | 1,292 | 134 |
| 2022-23 | 4 | 226 | 123 | 184 | 1 | 1,289 | 152 |
| 2023-24 | 2 | 245 | 124 | 189 | 2 | 1,222 | 163 |
| 2024-25 | 4 | 246 | 115 | 202 | 2 | 1,321 | 171 |
| Average | 5 | 183 | 96 | 164 | 2 | 1,242 | 122 |
Colby College does not offer online degree/certificate programs. All Students have enrolled in on-campus programs.
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