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Abstract
The federal government's Office of Management and Budget, with staff support from the Census Bureau's Population Division, is responsible for maintaining the statistical standard that provides criteria used to define metropolitan settlement and that delineates individual metropolitan areas for use in federal statistics. Review of the current standard, which dates from 1990, is now under way in conjunction with the 2000 census. Reviews of the emergence of the metropolitan form of settlement in the United States and of previous geospatial units representing metropolitan settlement are provided. A framework of geospatial units to represent the various elements of settlement at the close of the 20th century, including metropolitan and nonmetropolitan forms, is offered. Three papers that provide new approaches to delineating metropolitan and nonmetropolitan settlement in the United States are introduced. [Keywords: metropolitan and nonmetropolitan settlement, geospatial units of analysis, federal government, statistics.]