A discussion of approaches to urban information systems and current efforts in this field under way around the country. The importance of the words [system] and [integration] is emphasized. Two approaches are described: (1) the "information availability" approach, in which the purpose is to design a system that will handle a wide range of information, largely independent of the uses to which the information is put; and (2) the "information requirements" approach, in which the objective is to design a system to handle only that information required for specific decisions and operations which have themselves been analyzed in considerable detail. The "information availability" approach is preferred. 18 pp.