The objective of this study was to examine the prevalence of heavy alcohol use, related harm, and implications for prevention among community college students. We used data from 7,965 students at 19 community colleges who responded to the Core Alcohol and Other Drug Survey. This secondary analysis of the survey data found heavy consumption among 47% of 17- to 24-year-old community college students, a figure that reflects national trends at 4-year colleges, and a significant heavy consumption rate (23%) among students who are 25 or older. Similarly, the study found that consumption and harm varied by individual background, environment, and student attitudes. Community colleges are challenged to consider the role alcohol plays in student health and learning, and whether new efforts to ameliorate the harm from heavy alcohol use are warranted in an era of limited institutional resources. (Contains 6 tables.)