https://www.samhsa.gov/data/sites/default/files/NSDUHresultsPDFWHTML2013/Web/NSDUHresults2013.pdf has some information on use of illegal drugs and alcohol.
Figure 2.9 on page 23 suggests that 19.1% of 18-25 year olds used marijuana in the past month in 2013.
Figure 2.12 on page 27 suggests that Asian people use illegal drugs (combined, but most such use is marijuana) at much lower rates than black, white, and Hispanic/Latino people. But that is not stratified by age or college attendance.
The bottom of page 27 mentions full time college students, whose illegal drug use rates do not appear to be much different from general trends for their age cohort.
Figure 3.2 on page 38 suggests that 44.4% of 18-25 year old men were binge drinkers of alcohol in 2013 (versus 31.4% for 18-25 year old women).
Figure 3.3 on page 39 suggests that all non-white people had lower overall alcohol use rates than white people, though binge rates were mostly similar except that they were lower for Asian and multiracial people. Heavy drinking rates were highest among Pacific islander, multiracial, and white people and lowest for Asian people. But that is not stratified by age or college attendance.
Figure 3.4 on page 40 suggests that binge drinking is higher among full time college students than others within the 18-22 year old age group.