Data from 15 Demographic and Health Surveys are used to examine whethe
r rural-urban migrants in developing countries experience higher child
mortality after settling in towns and cities than do lifelong urban r
esidents, and if so, what individual or household characteristics acco
unt for this. Findings indicate that children of female migrants from
the countryside generally have much poorer survival chances than other
urban children. This survival disadvantage is more pronounced in big
cities than in smaller urban areas, among migrants who have lived in t
he city for many years than among recent migrants, and in urban Latin
America than in urban North Africa and sub-Saharan Africa. Within big
cities, higher child mortality among migrant women is clearly related
to their concentration in low-quality housing, and in part to fertilit
y patterns at early ages of children and mother's educational attainme
nt at later ages. Excess child mortality among urban migrants may also
result from factors associated with the migration process, that are o
utlined in this study but not included in the analysis. Evidence of mo
derately high levels of residential segregation of migrant women in bi
g cities suggests that opportunities exist for urban health programs t
o direct interventions to this disadvantaged segment of city populatio
ns.