Overview_Description:
Entity_and_Attribute_Overview: All TIGER/Line files contain data describing three major types of features/entities;
Line Features: 1) Roads, 2) Railroads, 3) Hydrography, 4) Miscellaneous transportation
features and selected power lines and pipe lines, 5) Political and statistical boundaries
Landmark Features: 1) Point landmarks, e.g., schools and churche, 2) Area landmarks, e.g.,
Parks and cemeteries, 3) Key geographic locations (KGLs), e.g., shopping centers and
factories. Polygon features: 1) Geographic entity codes for areas used to tabulate the
Census 1990 census statistical data and 1990 geographic areas, 2) Locations of area
landmarks, 3) Locations of KGLs The line features and polygon information form the majority
of data in the TIGER/Line files. Some of the data/attributes describing the lines include
coordinates, feature identifiers (names), CFCCs (used to identify the most noticeable
characteristic of a feature), address ranges, and geographic entity codes. The TIGER/Line
files contain point and area labels that describe landmark features and provide locational
reference. Area landmarks consist of a feature name or label and feature type assigned to a
polygon or group of polygons. Landmarks may overlap or refer to the same set of polygons.
The Census TIGER data base uses collections of spatial objects (points, lines, and polygons)
to model or describe real-world geography. The Census Bureau uses these spatial objects to
represent features such as streets, rivers, and political boundaries and assigns attributes
to these features to identify and describe specific features.
Entity_and_Attribute_Detail_Citation: More Entity and Attribute Information can be found in "Chapter 5" and "Chapter 6" in
the U.S. Census Bureau TIGER/Line file Technical Documentation, available at
<
https://assets.nhgis.org/original-data/gis/TIGER_1992_TechDoc.pdf>. The TIGER/Line
documentation defines the terms and definitions used within the files.