A planned pregnancy is considered desirable, in part because of the potential of a better pregnancy outcome. Since the improvement of pregnancy outcome is of particular relevance in low-income populations, we have compared the characteristics of women with planned and unplanned pregnancies in central Harlem with regard to those factors that might affect pregnancy planning such as sociodemographic factors, attitudes toward child-rearing, environmental stress, social support, and maternal mental health. Of the 416 women in the study, a minority (27%) reported their pregnancy as being planned. They differed from the remainder in being more likely to be married and/or living with a boyfriend or husband and to have been bom outside New York City. The two groups did not differ in any other risk factor or in outcome in terms of birth weight and gestational age. The results provide little support for the lack of planning of pregnancy as an indicator of risk in a low-income population and suggest that improvement of perinatal outcome must involve more broadly based interventions that are not confined to the periconceptional period.