Increasingly, the poor are to be found in the urban areas of developing countries. Many urban households, not only the very poor, face economic insecurity and deprivation. Despite the steady growth of low-income groups in the urban areas of Africa, the mechanisms for coping with urban poverty were not studied to any great extent until the end of the 1980s. Most research into the strategies developed by households to cope with poverty had centred on the rural household. This article focuses on the inhabitants of the town of Mopti, situated in the Sahelian zone of Mali on the border of the inland delta of the river Niger. It deals with the subsistence strategies of different types of urban households and their adjustments to uncertain and deteriorating economic circumstances. In analysing these coping mechanisms account is taken of the various factors affecting households' ability to cope with reduced earnings or lack of income, such as their socio-economic position, migration status, composition and size, and ethnic background. A pertinent question in the analysis is whether urban households, in deteriorating circumstances, diversify their sources of income or specialise in one activity.