We examined eligibility and enrollment among parents of children in New Jersey's State Children's Health Insurance Program following expansion of parental eligibility for NJ FamilyCare coverage. Data were from the 2003 NJ FamilyCare Family Health Survey (n = 416 families). Parental eligibility was higher in households without a full-time employed parent (odds ratio [OR] = 5.50; 95% confidence interval [CI] = 2.72, 11.14) and lower among single parents (OR = 0.38; 95% CI = 0.23, 0.61). Enrollment was higher among single parents (OR = 2.24; 95% CI = 1.17, 4.31). Roughly one third of eligible parents did not enroll, suggesting the need to increase awareness of parental eligibility and reduce barriers to enrollment.