This July 2005 Research presents an analysis of the changing picture of average units attempted by students who attend the four Los Rios colleges in Sacramento, California--American River College, Cosumnes River College, Folsom Lake College and Sacramento City College. Beginning in 2000 a six-year trend of declining average units attempted by Los Rios students appeared to be changing with three years of steady increase through Fall 2002. This trend of increasingly higher units has continued, with average units surpassing those of the early 1990's, from a then high average 7.16 units in 1993 to an average 7.57. in Fall 2004. This Research brief takes a close look at the changing patterns of enrollment, especially by the age of Los Rios students, and summarizes the impact of age on the increase in average units attempted.