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2022 TIGER/Line shapefiles contain topological face polygons, the areal primitives that form the U.S. Census Bureau's seamless national geographic database. These polygons include key geographic area codes for all Census-tabulated areas, enabling the reconstruction of census geography boundaries. The data is produced by the U.S. Census Bureau for Jefferson County, Iowa.
Data is provided in ZIP and XML formats; users require GIS software capable of reading TIGER/Line shapefiles. The extensive list of tags suggests a wide array of geographic codes are present, but the exact column schema is not detailed in the input.