In this paper, I examine differentials in under-five mortality by place of residence for the state of São Paulo, Brazil. I examine differentials between urban and rural areas, and by location within urban areas, over a 21-year period between 1970 and 1991. I also investigate economic inequalities in under-five mortality for urban areas. For São Paulo, much of the entire infant and child mortality transition unfolded during the period 1970-1991. I investigate whether these improvements in mortality were accompanied by narrowing differentials by place of residence and declining economic inequalities in mortality. I draw on microdata from Brazilian censuses conducted in 1970, 1980, and 1991.