Comparisons of three populations of male and female DUIL offenders were carried out on a variety of descriptive measures. Repeat offenders differ from first offenders on all measures regardless of sex. Repeat offender males and females resemble each other closely as do first offender males and females. Compared to their first offender counterparts, repeat offender males and females drink more often, get drunk more often, abuse drugs in proportionately greater numbers, utilize more alcohol treatment services, have fewer economic resources, and exhibit greater impairment as a result of their drinking. The observed increase in DUIL arrests of females and their similarity to males in terms of problem drinking and drinking problems requires that intervention strategies be sensitive to the needs of both sexes.