The purpose of the current research was to identify demographic and psychosocial factors important in the decision to breastfeed among a sample of WIC participants in a rural area. One hundred and ninety-eight women completed both a prenatal interview during their third trimester of pregnancy and a second interview within one to three weeks postpartum. Twenty-seven percent of these WIC participants initiated breastfeeding. Multiple logistic regression analysis revealed that prenatal behavioral beliefs about the consequences of breastfeeding and formula feeding were the strongest predictors of breastfeeding initiation. The results suggest that education to improve the current low rates of breastfeeding among WIC participants should emphasize that formula feeding is neither more convenient nor easier than breastfeeding, and that breastfeeding need not limit mothers in public or social settings.